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You searched for: Journal Annals of botany Remove constraint Journal: Annals of botany Publication Year 1988 Remove constraint Publication Year: 1988 Source 1988 v.61 no.3 Remove constraint Source: 1988 v.61 no.3
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1. Development and histochemistry of style and stigma, and pollen-pistil interaction in Madhuca indica (Sapotaceae)

Author:
Kuruvilla, P.K.; Shah, J.J.
Source:
Annals of botany 1988 v.61 no.3 pp. 269-281
ISSN:
0305-7364
Subject:
plant development; stigma; pollen; histochemistry; Madhuca longifolia
Abstract:
... The histological and histochemical changes during the development of the stigma and style of Madhuca indica of the family Sapotaceae have been investigated. The stigma is of the wet type and the style is open. The stigma secretion, present from stage I onwards is lipophilic. But the protein, polysaccharides and various enzymes are secreted only by the third, receptive stage. The stigma has a stell ...
DOI:
10.1093/oxfordjournals.aob.a087554

2. Distribution, development and structure of resin ducts in guayule (Parthenium argentatum Gray)

Author:
Joseph, J.P.; Shah, J.J.; Inamdar, J.A.
Source:
Annals of botany 1988 v.61 no.3 pp. 377-387
ISSN:
0305-7364
Subject:
Parthenium argentatum; resin canals; resins; plant development; epithelium
Abstract:
... The distribution, development and structure of resin ducts in guayule (Parthenium argentatum Gray), the second best source of natural rubber, have been studied. Resin ducts are widely distributed in stem, root, leaf, petiole and peduncle. The ducts in the primary tissues are initiated schizogenously and their further development is schizolysigenous. The ducts in the cortex of the root do not have ...
DOI:
10.1093/oxfordjournals.aob.a087567

3. Effect of spermidine and methylglyoxal-bis (guanyl-hydrazone) (MGBG) on in vitro pollen germination and tube growth in Catharanthus roseus

Author:
Prakash, L.; John, P.; Nair, G.M.; Prathapasenan, G.
Source:
Annals of botany 1988 v.61 no.3 pp. 373-375
ISSN:
0305-7364
Subject:
pollen tubes; spermidine; Catharanthus roseus
Abstract:
... Incorporation of polyamine-spermidine into the nutrient medium at 10(−6) and 10(−5) M concentrations stimulates pollen-tube growth in vitro in Catharanthus roseus L. G. Don. MGBG, an inhibitor of spermidine biosynthesis, at 0.5 × 10(−3) and 1 x 10(−)3 M concentrations reduced the percentage of germination as well as tube growth and at a concentration of 1.5 x 10(−3) M germination was totally inhib ...
DOI:
10.1093/oxfordjournals.aob.a087566

4. Effects of gibberellin on shoot development in the dgt mutant of tomato

Author:
Scott, I.M.
Source:
Annals of botany 1988 v.61 no.3 pp. 389-392
ISSN:
0305-7364
Subject:
Solanum lycopersicum var. lycopersicum; mutants; gibberellins; shoots; plant development; plant morphology
Abstract:
... The morphological effects of gibberellin A3 (GA3) on the dgt mutant of tomato were investigated. The mutant effectively showed the normal range of responses, including a promotion of stem length due to an increased number of longer internodes, a dramatic increase in apical dominance, and effects on leaf shape and colour. In the case of stem elongation, the quantitative response of the mutant was g ...
DOI:
10.1093/oxfordjournals.aob.a087568

5. Effects of plant growth regulators and nutrient supply on tiller bud outgrowth in barley (Hordeum distichum L.)

Author:
Woodward, E.J.; Marshall, C.
Source:
Annals of botany 1988 v.61 no.3 pp. 347-354
ISSN:
0305-7364
Subject:
Hordeum vulgare; growth regulators; buds; tillering; shoots; root systems
Abstract:
... Seedlings of spring barley were raised in 100 and 20% nutrient solution and treated with a foliar application of Terpal, Cerone, TIBA, GA3 or BAP. The growth of individual tiller buds and tillers, the main shoot and the root system was recorded over the following 15 d. Terpal and Cerone stimulated tiller bud elongation within 5 d at both nutrient levels and after 15 d the number of emerged tillers ...
DOI:
10.1093/oxfordjournals.aob.a087563

6. Internode length in Pisum: variation in response to a daylength extension with incandescent light

Author:
Murfet, I.C.
Source:
Annals of botany 1988 v.61 no.3 pp. 331-345
ISSN:
0305-7364
Subject:
Pisum sativum; internodes; photoperiod; line differences; genotype
Abstract:
... Lines representing a range of internode length and flowering genotypes in Pisum sativum L. were grown in 8 h of daylight followed by either 16 h of darkness or incandescent light. The stem elongation response index (RI = length in 24 h ÷ length in 8 h) was least in the very short internode nana types, which are grossly deficient in gibberellins (GAs), and the very long internode slender types, whi ...
DOI:
10.1093/oxfordjournals.aob.a087562

7. Photoperiod and temperature effects on late developmental stages of Stylosanthes guianensis

Author:
Trongkongsin, K.; Humphreys, L.R.
Source:
Annals of botany 1988 v.61 no.3 pp. 283-288
ISSN:
0305-7364
Subject:
Stylosanthes guianensis; flowering; seeds; photoperiod; temperature
Abstract:
... Seedlings of Stylosanthes guianensis var. guianensis cv. Cook and S. guianensis var. pauciflora cv. Bandeirante were defoliated and placed in a naturally lit glasshouse at 23/18 °C, 28/23 °C or 33/28 °C (day/night). After exposure to 14 h days and after floral induction with 30 cycles of 11 h, plants were allocated to 11, 12, 13 or 14 h during flowering and seed formation. Floral initiation occurr ...
DOI:
10.1093/oxfordjournals.aob.a087555

8. Phyllotactic pattern generation: a conceptual model

Author:
Jean, R.V.
Source:
Annals of botany 1988 v.61 no.3 pp. 293-303
ISSN:
0305-7364
Subject:
phyllotaxy; models
Abstract:
... A conceptual model is proposed here that shows how all types of whorled and peculiar patterns in phyllotaxis derive straightforwardly from normal and anomalous spiral patterns. This is a complete model of phyllotaxis, integrating the author's interpretative model for generating spiral patterns. The paper underlines that a better understanding of the variety of phyllotactic patterns, and of the tra ...
DOI:
10.1093/oxfordjournals.aob.a087557

9. Predicting the amount of litterfall in forests of the world

Author:
Lonsdale, W.M.
Source:
Annals of botany 1988 v.61 no.3 pp. 319-324
ISSN:
0305-7364
Subject:
forest litter; latitude; altitude
Abstract:
... Total litterfall and leaf litterfall were examined for 389 forest sites throughout the world using multiple regression, considering latitude, altitude and precipitation as predictor variables. In its best model, Ig total litterfall was negatively related (r2 = 0.58) to latitude and altitude, while in the best model for lg leaf litterfall there was a negative relationship (r2 = 0.35) with only one ...
DOI:
10.1093/oxfordjournals.aob.a087560

10. Preservation of the differentiated state of mesophyll cells in vitro

Author:
Askani, A.; Beiderbeck, R.
Source:
Annals of botany 1988 v.61 no.3 pp. 393-394
ISSN:
0305-7364
Subject:
Calystegia sepium; mesophyll; cell structures
Abstract:
... Under a variety of light conditions, and in a modified NT medium containing sucrose as a carbon source, isolated mesophyll cells of Calystegia sepium started cell divisions after 72 h. Alternately, under light-dark alterations (12: 12 h; 1.35–1.50 W m−2 of cool white light), and culture in the NT medium lacking an organic carbon source, and made iso-osmotic by the addition of mannitol, the cells p ...
DOI:
10.1093/oxfordjournals.aob.a087569

11. Seed structure in Cannaceae: taxonomic and ecological implications

Author:
Grootjen, C.J.; Bouman, F.
Source:
Annals of botany 1988 v.61 no.3 pp. 363-371
ISSN:
0305-7364
Subject:
seed germination; taxonomy; seeds; Canna glauca
Abstract:
... The ovules and seeds of Canna show some striking differences to those in other zingiberalean families. The pachychalazal development of the ovule results in a seed of which only a small part of the testa is of tegumentary origin. A silicified endotesta, characteristic of the order, is lacking. The mechanical layer of the seed is formed by a continuous exotesta of Malpighian cells. The intact seed ...
DOI:
10.1093/oxfordjournals.aob.a087565

12. Storage of pollen grains in organic solvents: effect of organic solvents on leaching of phospholipids and its relationship to pollen viability

Author:
Jain, A.; Shivanna, K.R.
Source:
Annals of botany 1988 v.61 no.3 pp. 325-330
ISSN:
0305-7364
Subject:
Crotalaria retusa; viability; phospholipids; solvents; leaching; pollen germination
Abstract:
... In vitro germinability and membrane integrity (as revealed by the fluorochromatic reaction (FCR) test) of pollen grains of Crotalaria retusa L. stored in various organic solvents for six months at −20±2 °C were studied and correlated with leaching of lipids, phospholipids, sugars and free amino acids from pollen grains into organic solvents during storage. Pollen grains stored in organic solvents ...
DOI:
10.1093/oxfordjournals.aob.a087561

13. Studies on variability in white clover: growth habits and cyanogenic glucosides

Author:
Fraser, J.; Nowak, J.
Source:
Annals of botany 1988 v.61 no.3 pp. 311-318
ISSN:
0305-7364
Subject:
Trifolium repens; cyanogenic glycosides; cyanogenesis
Abstract:
... Growth habits and cyanogenesis were studied in a field experiment with white clover (Trifolium repens L.) cv. Huia. Eighty control plants propagated by seeds, and 80 clones of an in vivo selected variant were examined in mid-late August and late September. The temperature effect on cyanogenic glucoside levels was also examined on in vitro grown plantlets of the variant in growth chambers. Results ...
DOI:
10.1093/oxfordjournals.aob.a087559

14. The effects of temperature on leaf growth in Cyperus longus, a temperate C4 species

Author:
Collins, R.P.; Jones, M.B.
Source:
Annals of botany 1988 v.61 no.3 pp. 355-362
ISSN:
0305-7364
Subject:
leaves; temperature; carbon; biochemical pathways
Abstract:
... Plants of the C4 sedge Cyperus longus L. were grown at 10, 20 and 30 °C. An asymptotic growth curve, the Richards function, was fitted to growth data for successive leaves. The mean rate of leaf appearance was a linear function of temperature with 0.014 leaves appearing per day for every 1 °C increase in temperature. The instantaneous relative rate of leaf extension showed a marked ontogenetic dri ...
DOI:
10.1093/oxfordjournals.aob.a087564

15. The significance of the presence of stomata on seedling roots

Author:
Tarkowska, J.A.; Wacowska, M.
Source:
Annals of botany 1988 v.61 no.3 pp. 305-310
ISSN:
0305-7364
Subject:
Pisum sativum; Ornithopus sativus; Helianthus annuus; stomata; abscisic acid; root hairs
Abstract:
... Slightly squashed and transversely sectioned sprouts (seedling root + hypocotyl to cotyledons) of Pisum arvense, Ornithopus sativus and Helianthus annuus were examined. The presence of stomata is described on seedling roots, including the root hair zone, in Pisum and Ornithopus and in the root hair zone of the hypocotyl of Helianthus. The stomata found in the root hair zones are almost always open ...
DOI:
10.1093/oxfordjournals.aob.a087558

16. The stimulation of acid phosphatase activity in the stalked gland of Drosera rotundifolia

Author:
McNally, S.F.; Stewart, A.; Wilson, U.E.
Source:
Annals of botany 1988 v.61 no.3 pp. 289-292
ISSN:
0305-7364
Subject:
Drosera; plant glands; acid phosphatase; enzyme activity; vacuoles
Abstract:
... Localization of acid phosphatases (phosphomonoesterases II EC 3.1.3.2) was studied in the secretory cells of stalked gland tissue of Drosera rotundifolia L. using a modified Gomori procedure with p-nitrophenol phosphate (pNP) as substrate. In unstimulated and 24 h stimulated tissue, some acid phosphatase activity was localized in vacuoles, cell wall regions and cuticular pores of only a few cells. ...
DOI:
10.1093/oxfordjournals.aob.a087556