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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 ...