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You searched for: Publication Year 1997 Remove constraint Publication Year: 1997 Subject Helianthus annuus Remove constraint Subject: Helianthus annuus
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1. ATPase activities of root microsomes from mycorrhizal sunflower (Helianthus annuus) and onion (Allium cepa) plants

Author:
Bago, B.; Donaire, J.P.; Azcon-Aguilar, C.
Source:
New phytologist 1997 v.136 no.2 pp. 305-311
ISSN:
0028-646X
Subject:
azides; vesicular arbuscular mycorrhizae; Helianthus annuus; protein content; Allium cepa; microsomes; enzyme inhibitors; mitochondria; nitrates; length; tonoplast; plasma membrane; enzyme activity; roots; adenosinetriphosphatase; shoots
DOI:
10.1046/j.1469-8137.1997.00741.x

2. Anti-transpiration and anti-growth activities in the xylem sap from plants under different types of soil stress

Author:
Zhu, X.; Zhang, J.
Source:
New phytologist 1997 v.137 no.4 pp. 657-664
ISSN:
0028-646X
Subject:
Zea mays; Helianthus annuus; Gossypium hirsutum; Ricinus communis; xylem; sap; growth retardation; transpiration; drought; water stress; soil water; soil salinity; protein transport; protein content; molecular weight; leaves; shoots; bioassays; plant proteins; abscisic acid; translocation (plant physiology)
DOI:
10.1046/j.1469-8137.1997.00869.x

3. Carboxyarabinitol 1-phosphate phosphatase from leaves of Phaseolus vulgaris and other species

Author:
Charlet, T.; Moore, B.d.; Seemann, J.R.
Source:
Plant & cell physiology 1997 v.38 no.5 pp. 511-517
ISSN:
0032-0781
Subject:
arabinitol; Helianthus annuus; phosphoric monoester hydrolases; Alocasia macrorrhizos; Solanum tuberosum; Phaseolus vulgaris; Triticum aestivum; phosphates; photosynthesis; protein composition; leaves; Arabidopsis thaliana; enzyme activity; Beta vulgaris; Solanum lycopersicum var. lycopersicum; ribulose-bisphosphate carboxylase; Spinacia oleracea; Megathyrsus maximus; physicochemical properties; binding sites
Abstract:
... Carboxyarabinitol 1-phosphate (CA1P) phosphatase activity occurred in leaves of 10 species examined, with the highest activity in leaves of Phaseolus vulgaris. Enzyme was purified from P. vulgaris 1,580-fold to a final specific activity of 6.1 micromoles min-1 (mg protein)-1. Structural characteristics of positive effectors and substrate analogs for the CA1P phosphatase reaction were examined. Pos ...
DOI:
10.1093/oxfordjournals.pcp.a029198

4. Changes in RNA and protein metabolism associated with alterations in the germination efficiency of sunflower seeds

Author:
Reuzeau, C.; Cavalie, G.
Source:
Annals of botany 1997 v.80 no.2 pp. 131-137
ISSN:
0305-7364
Subject:
imbibition; seed germination; viability; messenger RNA; Helianthus annuus; polypeptides; protein synthesis; cotyledons; gene expression; cell membranes
Abstract:
... Precise knowledge of seed quality after harvest and during storage is of particular importance for seed producers. We analysed different sunflower seed lots (Helianthus annuus L.) characterized by extremes of germination ability. We used RNA analysis to study possible changes in gene expression in seeds unable to germinate. Total RNA content was very small in dry seeds showing a low germination ab ...
DOI:
10.1006/anbo.1997.0413

5. Characterization of the variation potential in sunflower

Author:
Stankovic, B.; Zawadzki, T.; Davies, E.
Source:
Plant physiology 1997 v.115 no.3 pp. 1083-1088
ISSN:
0032-0889
Subject:
Helianthus annuus; xylem; membrane potential; turgor; proton pump; plasma membrane; ion exchange; stress response
Abstract:
... A major candidate for intercellular signaling in higher plants is the stimulus-induced systemic change in membrane potential known as variation potential (VP). We investigated the mechanism of occurrence and long-distance propagation of VP in sunflower (Helianthus annuus L.) plants. Here we present evidence of the relationship among injury-induced changes in xylem tension, turgor pressure, and ele ...

6. Combining Ability of the Stay Green Trait and Seed Moisture Content in Sunflower

Author:
B. Cukadar-Olmedo; J. F. Miller; J. J. Hammond
Source:
Crop science 1997 v.37 no.2 pp. 378-382
ISSN:
0011-183X
Subject:
water content; Helianthus annuus; inbred lines; hybrids; maturity stage; stems; color; seeds; correlation; general combining ability; specific combining ability
Abstract:
... Plants of sunflower (Helianthus annuus L.) which retain a green color in stems at physiological maturity are characterized as having the stay green trait. Research on inheritance of the stay green/early senescence trait may provide valuable information to plant breeders for developing new cultivars with better resistance to drought and pests, and increased standability. This study was conducted to ...
DOI:
10.2135/cropsci1997.0011183X003700020012x

7. Components of quantitative resistance in sunflower to Alternaria helianthi

Author:
Kong, G.A.; Simpson, G.B.; Kochman, J.K.; Brown, J.F.
Source:
Annals of applied biology 1997 v.130 no.3 pp. 439-451
ISSN:
0003-4746
Subject:
conidia; Helianthus annuus; sporulation; prepatent period; infection; correlation; disease resistance; genetic resistance; prediction; genotype; disease severity
DOI:
10.1111/j.1744-7348.1997.tb07673.x

8. Corn, Sunflower, and Soybean Emergence Influenced by Soil Temperature and Soil Water Content

Author:
Theodore C. Helms; Edward L. Deckard; Peter A. Gregoire
Source:
Agronomy journal 1997 v.89 no.1 pp. 59-63
ISSN:
0002-1962
Subject:
Calciaquolls; Glycine max; Helianthus annuus; Zea mays; corn; drying; germination; imbibition; planting; silty clay loam soils; soil temperature; soil temperature regimes; soil water; soil water content; soil water deficit; soybeans; testa
Abstract:
... The influence of soil temperature and initial soil water content on subsequent germination and emergence of corn (Zea mays L.), sunflower (Helianthus annuus L.), and soybean [Glycine max (L.) Merr.] needs to be understood. Previous research has not determined whether emergence of corn and sunflower is reduced by soil water content that is high enough for seed imbibition but too low for radicle eme ...
DOI:
10.2134/agronj1997.00021962008900010009x

9. Crop Rotation and Tillage Effects on Phosphorus Distribution in the Central Great Plains

Author:
R. A. Bowman; A. D. Halvorson
Source:
Soil Science Society of America journal 1997 v.61 no.5 pp. 1418-1422
ISSN:
0361-5995
Subject:
Zea mays; Helianthus annuus; no-tillage; Panicum miliaceum; conventional tillage; nutrient availability; crop residues; reduced tillage; fallow; intensive cropping; Phaseolus vulgaris; Triticum aestivum; continuous cropping; phosphorus; crop rotation; biogeochemical cycles; Colorado
Abstract:
... The fate and availability of soil P in the central Great Plains may become less predictable with less tillage and more intensive crop rotations that produce more crop residue and litter than conventional-till (CT) wheat (Triticum aestivum L.)-fallow (W-F). We need to evaluate these new systems relative to new P distribution patterns that may be occurring. We determined P changes in a Weld silt loa ...
DOI:
10.2136/sssaj1997.03615995006100050020x

10. Effect of Radiation Environment on Radiation Use Efficiency and Growth of Sunflower

Author:
M. P. Bange; G. L. Hammer; K. G. Rickert
Source:
Crop science 1997 v.37 no.4 pp. 1208-1214
ISSN:
0011-183X
Subject:
sunflower oil; inflorescences; Helianthus annuus; solar radiation; canopy; seeds; phenology; light intensity; leaf area; crude protein; harvest index; biomass; leaves; Queensland
Abstract:
... The level of incident radiation and the proportion of radiation that is diffuse affects radiation use efficiency (RUE) in crops. However, the degree of this effect, and its importance to growth and yield of sunflower (Helianthus annuus L.) have not been established. A field experiment was conducted to investigate the effects of radiation environment on RUE, growth, and yield of sunflower. A fully ...
DOI:
10.2135/cropsci1997.0011183X003700040030x

11. Effect of Specific Leaf Nitrogen on Radiation Use Efficiency and Growth of Sunflower

Author:
M. P. Bange; G. L. Hammer; K. G. Rickert
Source:
Crop science 1997 v.37 no.4 pp. 1201-1208
ISSN:
0011-183X
Subject:
sunflower oil; carbon dioxide; Helianthus annuus; nitrogen content; solar radiation; seeds; canopy; nitrogen; flowering; leaf area index; crude protein; harvest index; photosynthesis; biomass; application rate; leaves; nitrogen fertilizers; Queensland
Abstract:
... Specific leaf nitrogen (SLN, g/m²) is knownto affect radiation use efficiency (RUE, g/MJ) in different crops. However, this association and importance have not been well established over a range of different nitrogen regimes for field-grown sunflower (Helianthus annuus L.). An experiment was conducted to investigate different combinations and rates of applied nitrogen on SLN, RUE, and growth of su ...
DOI:
10.2135/cropsci1997.0011183X003700040029x

12. Effect of atmospheric pressure on sunflower (Helianthus annuus L.) protoplast division

Author:
Barthou, H.; Briere, C.; Caumont, C.; Petitprez, M.; Kallerhoff, J.; Borin, C.; Souvre, A.; Alibert, G.
Source:
Plant cell reports 1997 v.16 no.5 pp. 310-314
ISSN:
0721-7714
Subject:
protoplasts; turgor; Helianthus annuus; in vitro culture; biosynthesis; hypocotyls; cell walls; developmental stages; cell division; cytoskeleton; culture media; atmospheric pressure
Abstract:
... Sunflower protoplasts were cultured in liquid medium under high atmospheric pressure (0.2 to 0.6 MPa) and the plating efficiency, cell wall synthesis and microtubule organization were assessed. In 7-day-old cultures under a pressure of 0.4 MPa and above, the division rate was strongly reduced by more than 60% as compared to the control. Although most of the protoplasts had begun to regenerate a ne ...
DOI:
10.1007/s002990050229

13. Estimation of the cell-cycle duration in the root apical meristem: a model of linkage between cell-cycle duration, rate of cell production, and rate of root growth

Author:
Ivanov, V.B.; Dubrovsky, J.G.
Source:
International journal of plant sciences 1997 v.158 no.6 pp. 757-763
ISSN:
1058-5893
Subject:
mathematical models; Vicia faba; Helianthus annuus; cultivars; cell growth; cell division; Phalaris minor; root meristems; Triticum aestivum; Fagopyrum; Pisum sativum; Phalaris canariensis
DOI:
10.1086/297487

14. Feeding behavior and egg maturation of the red and gray sunflower seed weevils (Coleoptera: Curculionidae) on cultivated sunflower

Author:
Rana, R.L.; Charlet, L.D.
Source:
Annals of the Entomological Society of America 1997 v.90 no.5 pp. 693-699
ISSN:
0013-8746
Subject:
interspecific variation; Helianthus annuus; ova; seeds; Smicronyx fulvus; pollen; Smicronyx sordidus; feeding preferences
DOI:
10.1093/aesa/90.5.693

15. Fertility restoration of new CMS sources in sunflower (Helianthus annuus L.)

Author:
Horn, R.; Friedt, W.
Source:
Plant breeding 1997 v.116 no.4 pp. 317-322
ISSN:
0179-9541
Subject:
cytoplasmic male sterility; sunflower oil; viability; Helianthus annuus; hybrids; hybridization; height; agronomic traits; male fertility; chemical constituents of plants; inheritance (genetics); pollen
DOI:
10.1111/j.1439-0523.1997.tb01005.x

16. Gene transfer by particle bombardment to Norway spruce and Scots pine pollen

Author:
Haggman, H.M.; Aronen, T.S.; Nikkanen, T.O.
Source:
Canadian journal of forest research = 1997 v.27 no.6 pp. 928-935
ISSN:
0045-5067
Subject:
Pinus sylvestris; Picea abies; transgenic plants; pollen; beta-glucuronidase; gene expression; Helianthus annuus; biolistics; pollination; genetic transformation; promoter regions
Abstract:
... The aim of the present work was to genetically transform Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) pollen in order to study the possibilities of obtaining transgenic progenies. The effects of different pollen origins and regulatory sequences on the beta-glucuronidase (GUS) expression in pollen were significant. The highest GUS expression in pine (55 +/- 7.7% of g ...
DOI:
10.1139/x97-024

17. Growth and nitrate consumption of sunflowers in the rhizostat, a device for continuous nutrient supply to plants

Author:
Rockel, P.
Source:
Journal of plant nutrition 1997 v.20 no.10 pp. 1431-1447
ISSN:
0190-4167
Subject:
Helianthus annuus; nitrates; nutrient uptake; nitrogen metabolism; nutrient solutions; hydroponics; nitrogen content; potassium; nutrient content; nutrient-nutrient interactions; research equipment; nutrient availability; ammonium compounds
Abstract:
... A hydroponic system was designed in which the replenishment of nutrients is proportional to the consumption of nitrate or ammonium by higher plants. Further characteristics of this 'rhizostat' are on-line measurement of nitrate or ammonium, bubble-free aeration of the culture solution with pure oxygen, and auxostatic pH control at 6.00+/-0.1. Young sunflowers were grown in the rhizostat for up to ...
DOI:
10.1080/01904169709365345

18. High frequency of plant regeneration in sunflower from cotyledons via somatic embryogenesis

Author:
Fiore, M.C.; Trabace, T.; Sunseri, F.
Source:
Plant cell reports 1997 v.16 no.5 pp. 295-298
ISSN:
0721-7714
Subject:
Helianthus annuus; dose response; ethanol; developmental stages; gibberellic acid; explants; cotyledons; somatic embryogenesis; rooting; benzyladenine; genotype; naphthaleneacetic acid; genetic variation; culture media; callus; shoots
Abstract:
... A plant regeneration method via somatic embryogenesis of several Helianthus annuus L. genotypes was developed. Starting from cotyledonary explants high frequency embryo induction was obtained following several subcultures on defined media. An appropriate cotyledon developmental stage was identified. Etiolated explants and darkness treatment were necessary to obtain somatic embryos in all tested ge ...
DOI:
10.1007/s002990050226

19. Host-plant characteristics and environmental factors influencing flight activity of angoumois grain moth (Lepidoptera: Gelechiidae) in the field

Author:
Weston, P.A.; Barney, R.J.; Ge, X.
Source:
Environmental entomology 1997 v.26 no.2 pp. 229-233
ISSN:
0046-225X
Subject:
Sitotroga cerealella; planting date; Zea mays; Helianthus annuus; hybrids; phenology; diurnal activity; flight; meteorological parameters; storage pests; Kentucky
Abstract:
... Field studies were conducted to examine the effect of time of day and several phenological characteristics of maize plants on flight activity of Sitotroga cerealella (Olivier), a common pre- and postharvest pest of stored maize, Zea mays L., in the southeastern United States and many subtropical and temperate areas. A diurnal trapping study conducted in central Kentucky during late summer/early au ...
DOI:
10.1093/ee/26.2.229

20. Importance of the chiral centers of jasmonic acid in the responses of plants. Activities and antagonism between natural and synthetic analogs

Author:
Holbrook, L.; Tung, P.; Ward, K.; Reid, D.M.; Abrams, S.; Lamb, N.; Quail, J.W.; Moloney, M.M.
Source:
Plant physiology 1997 v.114 no.2 pp. 419-428
ISSN:
0032-0889
Subject:
Helianthus annuus; Brassica napus; measurement; chemical degradation; dose response; jasmonic acid; gene expression; Triticum aestivum; Nicotiana tabacum; esters; stereochemistry; enzyme activity; chemical structure; seed germination; transgenic plants; cotyledons; proteinase inhibitors; reporter genes; chemical constituents of plants; chlorophyll; beta-glucuronidase
Abstract:
... The importance of the two chiral centers at C-3 and C-7 in the molecular structure of jasmonic acid in plant responses was investigated. We separated methyl jasmonate (MeJA) into (3R)- and (3S)-isomers with a fixed stereochemistry at C-3, but epimerization at C-7 is possible. The four isomers of the nonepimerizable analog 7-methyl MeJA were synthesized. These six esters and their corresponding aci ...

21. Inheritance of resistance to phomopsis (Diaporthe helianthi) in sunflower

Author:
Vear, F.; Garreyn, M.; Tourvieille de Larbrouche, D.
Source:
Plant breeding 1997 v.116 no.3 pp. 277-281
ISSN:
0179-9541
Subject:
infection; Helianthus annuus; disease resistance; Diaporthe helianthi; genetic resistance; inbred lines; mycelium; screening; leaves; hybrids; inheritance (genetics); fungal diseases of plants; genotype
DOI:
10.1111/j.1439-0523.1997.tb00996.x

22. Inheritance of the Stay Green Trait in Sunflower

Author:
Belgin Cukadar-Olmedo; Jerry F. Miller
Source:
Crop science 1997 v.37 no.1 pp. 150-153
ISSN:
0011-183X
Subject:
restorer lines; hybrids; Helianthus annuus; stems; epistasis; crossing; maturity stage; genotype; inbred lines; color; inheritance (genetics); genetic variation; additive gene effects; heritability; maintainer lines
Abstract:
... The stay green trait of sunflower (Helianthus annuus L.) inbred lines and hybrids has been observed in the field. These genotypes have greener stems at physiological maturity, potentially resulting in improvements in overall plant health, resistance to drought and pests, and standability. Research on inheritance of the stay green trait may provide valuable information to plant breeders for develop ...
DOI:
10.2135/cropsci1997.0011183X003700010026x

23. Integrated control methods for managing sunflower head rot in Argentina

Author:
Mantecon, J.D.; Pereyra, V.
Source:
International journal of pest management 1997 v.43 no.2 pp. 143-144
ISSN:
0967-0874
Subject:
Sclerotinia sclerotiorum; Helianthus annuus; flowering; hybrids; application timing; carbendazim; fungal diseases of plants; conazole fungicides; varietal resistance; disease control; control methods; incidence; Argentina
DOI:
10.1080/096708797228843

24. Intercropping Legumes into Sunflower at Different Growth Stages

Author:
H. J. Kandel; A. A. Schneiter; B. L. Johnson
Source:
Crop science 1997 v.37 no.5 pp. 1532-1537
ISSN:
0011-183X
Subject:
Helianthus annuus; sowing date; Melilotus officinalis; height; crop yield; intercropping; Lens culinaris; nitrogen fixation; Medicago scutellata; harvest date; Vicia villosa; cultivars; diameter; seeds; soil organic matter; crop residues; air temperature; plant characteristics; genotype-environment interaction; biomass production; soil conservation; Medicago sativa; North Dakota
Abstract:
... Sunflower (Helianthus annuus L.) residue is fragile and does not provide a lot of ground cover. Legumes intercropped in sunflower could increase soil cover, reduce soil erosion, and add nitrogen and organic matter to the soil. Field studies were designed to evaluate the effect of different sowing dates of hairy vetch (Vicia villosa Roth), yellow-flowered sweetclover (Melilotus officinalis Lam.), a ...
DOI:
10.2135/cropsci1997.0011183X003700050020x

25. Interrupting Yield Depression in Monoculture Corn: Comparative Effectiveness of Grasses and Dicots

Author:
Paul M. Porter; R. Kent Crookston; J. Harlan Ford; David R. Huggins; William E. Lueschen
Source:
Agronomy journal 1997 v.89 no.2 pp. 247-250
ISSN:
0002-1962
Subject:
Zea mays; Helianthus annuus; Medicago sativa; fallow; crop yield; Sorghum bicolor subsp. drummondii; grains; continuous cropping; crop rotation; Minnesota
Abstract:
... It has been well documented that monoculture corn (Zea mays L.) yields less than corn grown in certain rotations. This field study conducted from 1992 through 1995 investigated several agronomic crops, rotated with corn, for their relative effectiveness in interrupting the yield depression associated with corn monoculture. The study was conducted on a Webster clay loam (fine-loamy, mixed, mesic Ty ...
DOI:
10.2134/agronj1997.00021962008900020015x

26. Isolation of a novel class of bZIP transcription factors that interact with ABA-responsive and embryo-specification elements in the Dc3 promoter using a modified yeast one-hybrid system

Author:
Kim, S.Y.; Chung, H.J.; Thomas, T.L.
Source:
plant journal 1997 v.11 no.6 pp. 1237-1251
ISSN:
0960-7412
Subject:
transcription factors; genetic transformation; messenger RNA; Helianthus annuus; complementary DNA; embryo (plant); Daucus carota; yeasts; amino acid sequences; gene expression; somatic embryogenesis; reporter genes; DNA-binding domains; abscisic acid; promoter regions
Abstract:
... Dc3 is a carrot lea class gene that is abundantly expressed during somatic and zygotic embryogenesis. Its expression is normally embryo-specific and also can be induced by abscisic acid. The regulatory elements mediating the embryo-specific expression of Dc3 reside within the proximal promoter region (-117 to +26), which is also essential for ABA-induced expression. In this study, an optimized ver ...
DOI:
10.1046/j.1365-313X.1997.11061237.x
PubMed:
9225465

27. Levels of endogenous sugars, transcripts of rbcS and rbcL, and of RuBisCO protein in senescing sunflower leaves

Author:
Ono, K.; Watanabe, A.
Source:
Plant & cell physiology 1997 v.38 no.9 pp. 1032-1038
ISSN:
0032-0781
Subject:
ribulose-bisphosphate carboxylase; Helianthus annuus; biosynthesis; sugars; quantitative analysis; transcription (genetics); gene expression; leaves; genes; enzyme activity; protein composition
Abstract:
... Sugar content, transcript levels of rbcS and rbcL, and ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) content were measured in the first leaves of sunflower plants grown under high light and low nitrogen supply. After the peak level of the photosynthetic activity was attained, photosynthates accumulated, and the photosynthetic activity decreased. When these plants were supplied with hig ...
DOI:
10.1093/oxfordjournals.pcp.a029268

28. Looking for molecular and physiological markers of osmotic adjustment in sunflower

Author:
Jamaux, I.; Steinmetz, A.; Belhassen, E.
Source:
New phytologist 1997 v.137 no.1 pp. 117-127
ISSN:
0028-646X
Subject:
Helianthus annuus; crossing; height; genetic markers; stomatal conductance; genotype; photosynthesis; leaves; restriction fragment length polymorphism; random amplified polymorphic DNA technique; complementary DNA; air temperature; leaf area; amino acid sequences; water content; osmosis; Helianthus argophyllus; water; nucleotide sequences; plant morphology
DOI:
10.1046/j.1469-8137.1997.00817.x

29. Meteorological method based on wet foliage to determine areas at high risk of fungal epidemics

Author:
Garin, A. de; Figuerola, P.; Basualdo, A.; Giavedoni, P.; Oricchio, P.; Skansy, M.
Source:
International journal of biometeorology 1997 v.40 no.3 pp. 178-180
ISSN:
0020-7128
Subject:
Helianthus annuus; bioclimatology; disease outbreaks; fungi; leaves; meteorological data; risk; temperature; Argentina
Abstract:
... The occurrence of fungal diseases is closely linked to specific atmospheric conditions affecting the life cycle of the fungus. Popular beliefs as well as scientific knowledge are in agreement on the effect of high temperature and moisture on fungal epidemics. The presence of a film of water on a plant, during an uninterrupted number of threshold hours is in many cases a necessary, and sometimes su ...
DOI:
10.1007/s004840050039

30. Molecular analysis of the fourth progeny of plants derived from a cytoplasmic male sterile chicory cybrid

Author:
Rambaud, C.; Bellamy, A.; Dubreucq, A.; Bourquin, J.C.; Vasseur, J.
Source:
Plant breeding 1997 v.116 no.5 pp. 481-486
ISSN:
0179-9541
Subject:
Cichorium intybus; Helianthus annuus; protoplast fusion; intergeneric hybridization; cytoplasmic male sterility; mitochondrial DNA; restriction fragment length polymorphism; genetic markers; progeny; hybrids; chromosome mapping; somatic hybridization; flowers; plant morphology; genetic recombination
DOI:
10.1111/j.1439-0523.1997.tb01035.x

31. Natural control of Helicoverpa armigera in sunflower: assessment of the role of predation

Author:
Berg, H. van den.; Cock, M.J.W.; Oduor, G.I.
Source:
Biocontrol science and technology 1997 v.7 no.4 pp. 613-629
ISSN:
0958-3157
Subject:
Helianthus annuus; insect control; Helicoverpa armigera; biological control; predation; Pheidole; Anthocoridae; Camponotus; population density; natural enemies; phenology; developmental stages; predators; life tables; Kenya
DOI:
10.1080/09583159730668

32. Number of Seeds per Unit Area in Sunflower Correlates Well with a Photothermal Quotient

Author:
Julio E. Cantagallo; Claudio A. Chimenti; Antonio J. Hall
Source:
Crop science 1997 v.37 no.6 pp. 1780-1786
ISSN:
0011-183X
Subject:
Helianthus annuus; seeds; seed set; air temperature; light intensity; flowering; buds; solar radiation; irrigation; yield components; cultivars; sowing date; artificial shade; Argentina
Abstract:
... Potential yield in several crop species is affected by radiation and temperature when they are grown under unstressed conditions. This issue has been not explored for sunflower (Helianthus annuus L), and the objectives of our experiments were (i) to analyze the dependence of seed number (SN, seeds m⁻²) on the thermal and light conditions during the period from floret initiation to the end of seed- ...
DOI:
10.2135/cropsci1997.0011183X003700060020x

33. Offset printing inks based on rapeseed and sunflower oil. Part I: Synthesis and characterization of rapeseed oil-and sunflower oil-modified alkyd resins

Author:
Sabin, Pascale; Benjelloun-Mlayah, Bouchra; Delmas, Michel
Source:
journal of the American Oil Chemists' Society 1997 v.74 no.5 pp. 481-489
ISSN:
0003-021X
Subject:
Helianthus annuus; alkyd resins; chemical structure; lipid content; printing inks; rapeseed; rapeseed oil; sunflower oil; vegetable oil
Abstract:
... Two sets of alkyd resins of variable oil lengths with the required properties for offset printing ink formulations, modified by sunflower and rapeseed oil, were synthetized according to the “monoglyceride” process. The influence of the acyl composition of the modifying vegetable oil and of the oil content on alkyds' properties was determined by detailed chemical and rheological characterization. M ...
DOI:
10.1007/s11746-997-0169-y

34. Organic matter, microbial biomass and enzyme activity of soils under different crop rotations in the tropics

Author:
Chander, K.; Goyal, S.; Mundra, M.C.; Kapoor, K.K.
Source:
Biology and fertility of soils 1997 v.24 no.3 pp. 306-310
ISSN:
0178-2762
Subject:
Pennisetum glaucum; Vigna unguiculata; Triticum aestivum; fallow; Solanum tuberosum; Solanum lycopersicum var. lycopersicum; Helianthus annuus; Brassica juncea; crop rotation; Sesbania bispinosa; green manures; soil microorganisms; biomass; microbial activity; biological activity in soil; carbon; mineralization; soil enzymes; oxidoreductases; alkaline phosphatase; tropics; India
Abstract:
... Soil organic matter level, soil microbial biomass C, ninhydrin-N, C mineralization, and dehydrogenase and alkaline phosphatase activity were studied in soils under different crop rotations for 6 years. Inclusion of a green manure crop of Sesbania aculeata in the rotation improved soil organic matter status and led to an increase in soil microbial biomass, soil enzyme activity and soil respiratory ...
DOI:
10.1007/s003740050248

35. Oviposition by the banded sunflower moth (Lepidoptera: Cochylidae) in response to constituents of the bracts and leaves of Helianthus annuus

Author:
Barker, J.F.
Source:
Journal of economic entomology 1997 v.90 no.1 pp. 160-164
ISSN:
0022-0493
Subject:
physical properties; volatile compounds; Helianthus annuus; oviposition; bracts; Cochylis hospes; plant extracts; water content; oviposition attractants; leaves
Abstract:
... Sunflower bracts that develop around the outer edge of the disk of a sunflower head have been reported to be the primary oviposition site for the banded sunflower moth, Cochylis hospes Walsingham, Experiments were conducted with the natural bract substrate, sunflower leaves, an artificial substrate, and sunflower extracts to look for the presence of chemical components or physical properties of br ...
DOI:
10.1093/jee/90.1.160

36. Phytotoxicity and Plant Uptake of Fuel Oil Hydrocarbons

Author:
C. H. Chaîneau; J. L. Morel; J. Oudot
Source:
Journal of environmental quality 1997 v.26 no.6 pp. 1478-1483
ISSN:
0047-2425
Subject:
Helianthus annuus; Hordeum vulgare; Lactuca sativa; Phaseolus vulgaris; Trifolium repens; Triticum aestivum; Zea mays; aboveground biomass; aromatic compounds; barley; beans; chemical structure; corn; fuel oils; gas chromatography; hydrocarbons; leaves; lethal concentration 50; lettuce; phytotoxicity; plant growth; polluted soils; seed germination; stems; wheat
Abstract:
... The phytotoxicity and phytoavailability of hydrocarbons (HC) were studied in soils artificially contaminated with fuel oil. The presence of HC in the soil inhibited seed germination and reduced plant growth. The germination and development of cultivated plants varied with the chemical structure of HC, the HC concentration in soil, and the plant species. The LC₅₀ values for germination after 8 d in ...
DOI:
10.2134/jeq1997.00472425002600060005x

37. Polyamines in Helianthus annuus L. during germination under salt stress

Author:
Benavides, M.P.; Aizencang, G.; Tomaro, M.L.
Source:
Journal of plant growth regulation 1997 v.16 no.4 pp. 205-211
ISSN:
0721-7595
Subject:
seed germination; Helianthus annuus; dose response; biosynthesis; quantitative analysis; salinity; ornithine decarboxylase; arginine; stress response; spermidine; spermine; enzyme inhibitors; putrescine; sodium chloride; alpha-difluoromethylornithine; chemical constituents of plants; enzyme activity
Abstract:
... The level of the three main polyamines putrescine, spermidine, and spermine and the biosynthetic enzyme arginine decarboxylase (ADC) decreased in Helianthus annuus L. seedlings subjected to increasing (50, 100, and 150 mM) NaCl concentrations. The pattern of polyamines in control plants increased during the initial 72 h and then reached a plateau. The putrescine level showed an increase of 370% af ...
DOI:
10.1007/PL00006997

38. Production of rainfed and irrigated crops under different crop rotations and input levels in southwestern France

Author:
Debaeke, P.; Hilaire, A.
Source:
Canadian journal of plant science 1997 v.77 no.4 pp. 539-548
ISSN:
0008-4220
Subject:
planting date; Helianthus annuus; plant density; Pisum sativum; application rate; irrigation; Triticum aestivum; crop production; Vicia faba; Zea mays; Glycine max; silty soils; Hordeum; Brassica napus var. napus; crop rotation; pesticides; nitrogen fertilizers; potassium fertilizers; clay soils; phosphorus fertilizers; Sorghum bicolor; France
DOI:
10.4141/P96-089

39. Proline- and hydroxyproline-rich gene products in the sexual tissues of flowers

Author:
Sommer-Knudsen, J.; Clarke, A.E.; Bacic, A.
Source:
Sexual plant reproduction 1997 v.10 no.5 pp. 253-260
ISSN:
0934-0882
Subject:
Helianthus annuus; Oryza sativa; Solanum tuberosum; hydroxyproline; genes; Brassica napus; extensin; proline; clones; gene expression; Nicotiana tabacum; protein composition; Arabidopsis thaliana; Zea mays; genetic code; Nicotiana alata; flowers; sexual reproduction; binding sites; Antirrhinum
DOI:
10.1007/s004970050095

40. Quantum yields and rate constants of photochemical and nonphotochemical excitation quenching. Experiment and model

Author:
Laisk, A.; Oja, V.; Rasulov, B.; Eichelmann, H.; Sumberg, A.
Source:
Plant physiology 1997 v.115 no.2 pp. 803-815
ISSN:
0032-0889
Subject:
Helianthus annuus; ion transport; light intensity; photoinhibition; measurement; carbon dioxide; dose response; Gossypium hirsutum; light harvesting complex; electron transfer; Sorghum bicolor; Nicotiana tabacum; leaves; Amaranthus cruentus; mathematical models; equations; net assimilation rate; temperature; prediction; cytochrome b
Abstract:
... Sunflower (Helianthus annuus L.), cotton (Gossypium hirsutum L.), tobacco (Nicotiana tabacum L.), sorghum (Sorghum bicolor Moench.), amaranth (Amaranthus cruentus L.), and cytochrome b6f complex-deficient transgenic tobacco leaves were used to test the response of plants exposed to different light intensities and CO2 concentrations before and after photoinhibition at 4000 micromoles photons m-2 s- ...

41. Rhizopus head rot of confectionery sunflower: effects on yield quantity and quality and implications for disease management

Author:
Shtienberg, D.
Source:
Phytopathology 1997 v.87 no.12 pp. 1226-1232
ISSN:
0031-949X
Subject:
mathematical models; Helianthus annuus; disease models; plant diseases and disorders; disease control; pathogenicity; crop yield; plant pathogenic fungi; Rhizopus oryzae; Israel
Abstract:
... The effects of Rhizopus head rot, caused by Rhizopus oryzae, on the yield of confectionery sunflower and its quality were studied in field experiments conducted from 1994 to 1996. The extent of yield loss was related to the crop growth stage at inoculation. When heads were inoculated at the budding stage, loss was not apparent, because inoculated heads were not infected. When inoculated at the ant ...
DOI:
10.1094/PHYTO.1997.87.12.1226
PubMed:
18945022

42. Screening for low grain cadmium phenotypes in sunflower, durum wheat and flax

Author:
Li, Y.M.; Chaney, R.L.; Schneiter, A.A.; Miller, J.F.; Elias, E.M.; Hammond, J.J.
Source:
Euphytica 1997 v.94 no.1 pp. 23-30
ISSN:
0014-2336
Subject:
Triticum turgidum; weight; cultivars; plant breeding; Helianthus annuus; line differences; seeds; chemical constituents of plants; Linum usitatissimum; soil chemistry; cadmium; genotype; genetic variation; screening; alkaline soils; leaves
Abstract:
... Cadmium (Cd) level in nonoilseed sunflower (Helianthus annuus L.), flax (Linum usitatissimum L.), and durum wheat (Triticum turgidum L. var. durum) grown on uncontaminated, alkaline soils has exceeded limits established in Northern Europe. Separate field experiments were conducted to investigate variability of grain Cd levels among sunflower, durum wheat and flax germplasm, and to seek an efficien ...
Handle:
10113/14468
DOI:
10.1023/A:1002996405463

43. Screening of transgenic plants by multiplex PCR

Author:
Marie Mannerlöf; Paul Tenning
Source:
Plant molecular biology reporter 1997 v.15 no.1 pp. 38-45
ISSN:
0735-9640
Subject:
genetic transformation; Zea mays; Helianthus annuus; Petunia hybrida; Capsicum annuum; Cucumis melo; Lactuca sativa; shoots; Solanum tuberosum; transgenic plants; polymerase chain reaction; rapid methods; Cucurbita pepo; Nicotiana tabacum; Brassica napus; Beta vulgaris; Solanum lycopersicum var. lycopersicum
Abstract:
... A protocol is described, for the rapid screening of a large number of putative transgenic shoots. Genomic DNA is isolated and screened by PCR. To validate the purity of the DNA, PCR amplification is done with primers homologous to an endogenous gene. Multiplex PCR is used to screen for the transgenic shoots with two sets of primers, one set against the endogenous gene (internal control) and the ot ...
DOI:
10.1007/BF02772111

44. Secreted heat shock proteins in sunflower suspension cell cultures

Author:
Mita, G.; Nocco, G.; Leuci, C.; Greco, V.; Rampino, P.; Perrotta, C.
Source:
Plant cell reports 1997 v.16 no.11 pp. 792-796
ISSN:
0721-7714
Subject:
Helianthus annuus; cell suspension culture; temperature; heat stress; heat shock proteins; protein synthesis; protein composition; plant secretions and exudates; stress response
Abstract:
... Sunflower suspension cell cultures were subjected to different heat treatments and the electrophoretic patterns of heat-induced endocellular and secreted proteins were analyzed. In response to heat shock (3 h at 40 degrees C), sunflower cells synthesized new polypeptides and secreted them into the medium, while the synthesis of other polypeptides was suppressed. Two major polypeptides of about 50 ...
DOI:
10.1007/s002990050322

45. Southeastern North Dakota Landsat TM Crop Mapping Project

Author:
Cook, Paul W.; Mueller, Rick; Doraiswamy, Paul
Source:
Technical papers / ACSM/ASPRS Annual Convention & Exposition 1997 pp. -
Subject:
remote sensing; Landsat; thematic maps; Triticum aestivum; spring wheat; multispectral imagery; Zea mays; corn; Phaseolus vulgaris; Glycine max; soybeans; Helianthus annuus; North Dakota
Abstract:
... The purpose of this project was to establish a crop specific classification for a group of counties in Southeastern North Dakota. Landsat TM data (from May, June, July, and September 1994) provided 24 bands of multi spectral information (the thermal bands were not used). Extending this crop classification throughout North Dakota using AVHRR data and developing relationships to spring wheat yield a ...
Handle:
10113/33215

46. Specifying the introgressed regions from H. argophyllus in cultivated sunflower (Helianthus annuus L.) to mark Phomopsis resistance genes

Author:
Besnard, G.; Griveau, Y.; Quillet, M.C.; Serieys, H.; Lambert, P.; Vares, D.; Berville, A.
Source:
Theoretical and applied genetics 1997 v.94 no.1 pp. 131-138
ISSN:
0040-5752
Subject:
Helianthus argophyllus; Helianthus annuus; introgression; interspecific hybridization; genetic markers; Diaporthe helianthi; disease resistance; genetic resistance; genes; plant breeding; random amplified polymorphic DNA technique; linkage (genetics)
Abstract:
... A method based upon targeting of introgressed markers in a Phomopsis-resistant line (R) of cultivated sunflower, issuing from a H. argophyllus cross was used to mark the Phomopsis resistance regions. Our study was based upon 203 F3 families derived from a cross between an inbred line susceptible to Phomopsis (S1) and the introgressed resistant line (R). Families were checked for Phomopsis resistan ...
DOI:
10.1007/s001220050391
PubMed:
19352755

47. Systemic elevation of phosphatidic acid and lysophospholipid levels in wounded plants

Author:
Lee, S.; Suh, S.; Kim, S.; Crain, R.C.; Kwak, J.M.; Nam, H.G.; Lee, Y.
Source:
plant journal 1997 v.12 no.3 pp. 547-556
ISSN:
0960-7412
Subject:
Solanum lycopersicum var. lycopersicum; abiotic stress; mechanical damage; defense mechanisms; lipid metabolism; metabolites; leaves; Vicia faba; Glycine max; Helianthus annuus; Capsicum annuum; seedlings; plant pests; plant pathogens; phospholipids
Abstract:
... Plants develop systemic defense responses upon exposure to pathogens or wounding by herbivores. Lipids and lipid metabolites have previously been implicated in induction of defense molecules during plant responses to physical wounding. Possible involvement of changes in lipid composition in systemic wound signal transduction was examined in leaves of seedlings of several different plant species. I ...
DOI:
10.1046/j.1365-313X.1997.00547.x

48. Tracer and Nitrate Movement to Groundwater in the Northern Great Plains

Author:
W. M. Schuh; D. L. Klinkebiel; J. C. Gardner; R. F. Meyer
Source:
Journal of environmental quality 1997 v.26 no.5 pp. 1335-1347
ISSN:
0047-2425
Subject:
Glycine max; Helianthus annuus; Triticum aestivum; aquifers; arid lands; dryland farming; glacial till; glacial till soils; groundwater; nitrate fertilizers; nitrate nitrogen; nitrates; rain; rhizosphere; solutes; soybeans; storms; summer; tracer techniques; vadose zone; water table; wheat; Great Plains region
Abstract:
... An experiment was conducted to study the movement of surface-applied tracers and fertilizer to groundwater on an agricultural field under dryland farming practices. Movement of surface-applied bromide, chloride, and fluoride tracers, and fertilizer nitrate (NO₃) through a coarse-loamy glacial till soil and vadose zone to saturated glacial till at about 3 to 4 m, and to a confined aquifer at 6.8 m, ...
DOI:
10.2134/jeq1997.00472425002600050020x

49. Two TIP-like genes encoding aquaporins are expressed in sunflower guard cells

Author:
Sarda, X.; Tousch, D.; Ferrare, K.; Legrand, E.; Dupuis, J.M.; Casse-Delbart, F.; Lamaze, T.
Source:
plant journal 1997 v.12 no.5 pp. 1103-1111
ISSN:
0960-7412
Subject:
Helianthus annuus; genes; gene expression; histochemistry; guard cells; plant proteins; complementary DNA; amino acid sequences; nucleotide sequences; permeability; water; mercury; leaves; messenger RNA; stomatal movement; leaf conductance; diurnal variation; water stress; water uptake; chemical constituents of plants
Abstract:
... SunTIP7 and SunTIP2O are closely related sunflower cDNAs showing a deduced amino acid sequence homologous to proteins of the tonoplast intrinsic protein (TIP) family. Their expression in Xenopus oocytes caused a marked increase in osmotic water permeability (demonstrating that they are water channels) which was sensitive to mercury. In leaves, in situ hybridization revealed that both SunTIP7 and S ...
DOI:
10.1046/j.1365-313X.1997.12051103.x

50. Tyloses and the maintenance of transpiration

Author:
Canny, M.J.
Source:
Annals of botany 1997 v.80 no.4 pp. 565-570
ISSN:
0305-7364
Subject:
Helianthus annuus; transpiration; phloem; sap; petioles; cambium; tyloses
Abstract:
... During a study of transpiration and embolism-formation in petioles of sunflower, tyloses were frequently observed in early metaxylem vessels. Tyloses were confined to the inner ends of the xylem arcs, remote from the phloem. Vessels in this position are especially vulnerable to embolism. All stages of the invasion of vessel lumens by xylem parenchyma cells were observed, from the early protuberanc ...
DOI:
10.1006/anbo.1997.0475

51. Unusual effects of some vegetable oils on the survival time of stroke-prone spontaneously hypertensive rats

Author:
Min-Zhao Huang; Shiro Watanabe; Tetsuyuki Kobayashi; Akito Nagatsu; Jinsaku Sakakibara; Harumi Okuyama
Source:
Lipids 1997 v.32 no.7 pp. 745-751
ISSN:
0024-4201
Subject:
Carthamus tinctorius; Helianthus annuus; Perilla; diet; evening primrose oil; fatty acid composition; fish oils; lard; olive oil; olives; rapeseed; rapeseed oil; rats; safflower oil; sodium chloride; soybean oil; sunflower oil; tap water; triolein; vegetable oil
Abstract:
... Preliminary experiments have shown that a diet containing 10% rapeseed oil (low-erucic acid) markedly shortens the survival time of stroke-prone spontaneously hypertensive (SHRSP) rats under 1% NaCl loading as compared with diets containing perilla oil or soybean oil. High-oleate safflower oil and high-oleate sunflower oil were found to have survival time-shortening activities comparable to that o ...
DOI:
10.1007/s11745-997-0095-z

52. Utilization of high-melting palm stearin in lipase-catalyzed interesterification with liquid oils

Author:
Ghosh, S.; Bhattacharyya, D. K.
Source:
journal of the American Oil Chemists' Society 1997 v.74 no.5 pp. 589-592
ISSN:
0003-021X
Subject:
Helianthus annuus; Rhizomucor miehei; acetone; carbon; lipid content; margarine; melting point; rice bran; soybeans; stearin; triacylglycerol lipase
Abstract:
... Palm stearin with a melting point (m.p.) of 49.8°C was fractionated from acetone to produce a low-melting palm stearin (m.p.=35°C) and a higher-melting palm stearin (HMPS, m.p.=58°C) fraction. HMPS was modified by interesterification with 60% (by weight) of individual liquid oils from sunflower, soybean, and rice bran by means of Mucor miehei lipase. The interesterified products were evaluated for ...
DOI:
10.1007/s11746-997-0185-y

53. Viscosity and gelling characteristics of sunflower pectin as affected by chemical and physical factors

Author:
Li, G.; Chang, K.C.
Source:
Journal of agricultural and food chemistry 1997 v.45 no.12 pp. 4785-4789
ISSN:
0021-8561
Subject:
Citrus; Helianthus annuus; buffers; gelation; heat; jellies; pH; pectins; sodium citrate; viscosity
Abstract:
... The effect of pH, buffer solution, buffer concentration, pectin concentration, and heating on the viscosity of sunflower pectin was studied. The sunflower pectin in all buffers and at all buffer concentrations had the highest viscosities at pH 3. Generally, the viscosity increased with the increase of pectin concentration. The effect of buffer concentration on viscosity was dependent upon the pH, ...
DOI:
10.1021/jf9708150

54. Visual acuity and blood lipids in term infants fed human milk or formulae

Author:
Sheila M. Innis; Salim S. Akrabawi; Deborah A. Diersen-Schade; M. Velma Dobson; David G. Guy
Source:
Lipids 1997 v.32 no.1 pp. 63-72
ISSN:
0024-4201
Subject:
Helianthus annuus; arachidonic acid; blood lipids; breast feeding; breast milk; cholesterol; coconuts; docosahexaenoic acid; erythrocytes; infant formulas; infants; omega-3 fatty acids; palm oils; phosphatidylcholines; phosphatidylethanolamines; soybean oil; North America
Abstract:
... This multicenter, parallel group study determined plasma phospholipid and red blood cell (RBC) phosphatidylcholine and phosphatidylethanolamine fatty acids, plasma cholesterol, apo A-1 and B, growth and visual acuity (using the acuity card procedure) in term infants fed from birth to 90 d of age with formula containing palm-olein, high oleic sunflower, coconut and soy oil (22.2% 16∶0, 36.2% 18∶1, ...
DOI:
10.1007/s11745-997-0010-7

55. gamma-Aminobutyric acid stimulates ethylene biosynthesis in sunflower

Author:
Kathiresan, A.; Tung, P.; Chinnappa, C.C.; Reid, D.M.
Source:
Plant physiology 1997 v.115 no.1 pp. 129-135
ISSN:
0032-0889
Subject:
ethylene; messenger RNA; Helianthus annuus; biosynthesis; quantitative analysis; laccase; radiolabeling; cotyledons; transcription (genetics); carboxy-lyases; 1-aminocyclopropane-1-carboxylate synthase; gamma-aminobutyric acid; enzyme activity; aminoethoxyvinylglycine
Abstract:
... gamma-Aminobutyric acid (GABA), a nonprotein amino acid, is often accumulated in plants following environmental stimuli that can also cause ethylene production. We have investigated the relationship between GABA and ethylene production in excised sunflower (Helianthus annuus L.) tissues. Exogenous GABA causes up to a 14-fold increase in the ethylene production rate after about 12 h. Cotyledons fed ...
PubMed:
9306696
PubMed Central:
PMC158468

56. The gradient between pre-dawn rhizoplane and bulk soil matric potentials, and its relation to the pre-dawn root and leaf water potentials of four species

Author:
Schmidhalter, U.
Source:
Plant, cell and environment 1997 v.20 no.7 pp. 953-960
ISSN:
0140-7791
Subject:
interspecific variation; Zea mays; Helianthus annuus; Hordeum vulgare; seedlings; soil; leaf water potential; dry matter accumulation; Triticum aestivum; rhizoplane; roots; root water potential; shoots
Abstract:
... Uptake of soil water by plants may result in significant gradients between bulk soil and soil in the vicinity of roots. Few experimental studies of water potential gradients in close proximity to roots, and no studies on the relationship of water potential gradients to the root and leaf water potentials, have been conducted. The occurrence and importance of pre-dawn gradients in the soil and their ...
DOI:
10.1046/j.1365-3040.1997.d01-136.x

57. The predominant protein in peroxisomal cores of sunflower cotyledons is a catalase that differs in primary structure from the catalase in the peroxisomal matrix

Author:
Kleff, S.; Sander, S.; Mielke, G.; Eising, R.
Source:
European journal of biochemistry 1997 v.245 no.2 pp. 402-410
ISSN:
0014-2956
Subject:
Escherichia coli; Helianthus annuus; amino acid sequences; amino acids; biogenesis; catalase; complementary DNA; cotyledons; immunoblotting; peptide mapping; peroxisomes; polyacrylamide gel electrophoresis; protein composition
Abstract:
... This paper describes a biochemical study on the protein composition of crystalline inclusions (cores) from plant peroxisomes. By SDS/PAGE and immunoblotting, a catalase of 59 kDa was identified as the predominant protein component in purified cores from sunflower (Helianthus annuus L.) cotyledons. A 55-kDa catalase was the only additional peptide detected. In contrast to in cores, the 55-kDa catal ...
DOI:
10.1111/j.1432-1033.1997.t01-1-00402.x
PubMed:
9151971

58. The responses of field-grown sunflower and maize to mechanical support

Author:
Goodman, A.M.; Ennos, A.R.
Source:
Annals of botany 1997 v.79 no.6 pp. 703-711
ISSN:
0305-7364
Subject:
root shoot ratio; weight; inflorescences; Zea mays; Helianthus annuus; wind; diameter; stems; root systems; morphogenesis; branching; bending strength; biomass; roots; leaves; England
Abstract:
... The effects of mechanical support on two contrasting species of herbaceous annual, the dicot sunflower (Helianthus annuus L.) and the monocot maize (Zea mays L.), were investigated by comparing the growth and mechanical properties of supported plants and those which were left to sway freely in the wind. Providing support had its greatest effect on the more highly-stressed basal areas of the plants ...
DOI:
10.1006/anbo.1997.0409