Growth Regulators and Flowering. I. Survey Methods.

Salisbury, Frank B.

doi:10.1104/pp.32.6.600

Cited by 29 publications

(12 citation statements)

References 19 publications

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“…A substance which inhibits photoperiodic induction only when it is applied during the dark periodc may influence either the time-measuring reactions of the dlark period or the processes which take place during the inductive dark period but after the expiration of the critical night length (8). Figure 3 figure 3 show, however, that 5-FU decreases the effectiveness of the processes wvhich go on in dark periods longer than the critical and which lead to flowering.…”

Section: Resultsmentioning

confidence: 88%

Inhibition of Photoperiodic Induction by 5-Fluorouracil

Salisbury¹,

Bonner²

1960

Plant Physiol.

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Section: Resultsmentioning

confidence: 88%

Inhibition of Photoperiodic Induction by 5-Fluorouracil

Salisbury¹,

Bonner²

1960

Plant Physiol.

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“…Cargill-163 hybrid showed the lowest total leaf area, lesser to 30 cm 2 , with the half of leaves senescent. Growth and photosynthesis in young leaves frequently do not reach the original rates for several days, and old leaves are often shed; also, cells are smaller and leaves develop less during water stress, resulting in reduced area for photosynthesis (SALISBURY & ROSS, 1992).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of morphological characteristics in Venezuelan maize (Zea mays L.) genotypes under drought stress

Camacho¹,

Caraballo²

1994

Sci. agric. (Piracicaba, Braz.)

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A greenhouse experiment was carried out to evaluate the responses among 10 maize (Zea mays L.) genotypes under drought stress. Seeds were planted in washed sand in plastic pots. The research was established in a completely random design with ten treatments and three replicate pots. The plants were harvested four weeks after sowning, and leaf area per plant (LA), root volume (RV), longest root length (LRL), plant height (PH), fresh (RFW) and dry weight (ROW) of roots, shoot dry weight (SOW), RDW/SDW ratio, and total dry matter production (TDM) were determined. Significant varietal differences for all characters were found, except for LRL. The data obtained allowed to identify Cargill-163 as a poor genotype at low water supply. Danac-3006, FM-6, Sefloarca-91, Ceniap PB-8, and Tocorón-300 hybrids showed the best behaviour in terms of RDW/SDW ratio and root volume. On the other hand, root dry weight was identified as the best indicator and easiest characteristic to determine the drought-tolerance of maize plant. Key Words: Zea mays, leaf area, root volume, root length, plant height, root weight, shoot weight, total dry matter, drought resistance AVALIAÇÃO DE CARACTERÍSTICAS MORFOLÓGICAS EM GENÓTIPOS DE MILHOS VENEZUELANOS SOB ESTRESSE DE ÁGUARESUMO: Foi efetuado um experimento em casa de vegetação para avaliar a resposta de genótipos de milho sob estresse à seca. As sementes foram semeados em potes plásticos com areia lavada. Foi usado um delineamento inteiramente ao acaso com 10 tratamentos e três repetições. As plantas foram coletadas quatro semanas após o plantio e determinou-se a área foliar por planta (AF), volume de raízes (VR), comprimento da maior raiz (CMR), altura de planta (AP), peso fresco (PFR) e seco (PSR) de raízes, peso seco da parte aérea (PSPA), relação PSR/PSPA e produção total de matéria seca (PTMS). Foram encontradas diferenças significativas em todos os parâmetros avaliados, exceto para CMR. Os dados obtidos permitem identificar o CARGILL-163 como o pior genótipo quando submetido a baixo suprimento de água. Os híbridos FM-6, SEFLOARCA-91, CENIAP PB-8 e TOCORON-300 mostraram o melhor comportamento em termos de relação PSR/PSPA e VR. Por outro lado, PSR foi identificado como o melhor parâmetro indicador de plantas tolerantes a estresse à seca. Descritores: Zea mays, área foliar, volume de raízes, comprimento de raízes, altura de planta, peso das raízes, peso da parte aérea, matéria seca total, resistência à seca

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“…Flowering of cocklebur was also suppressed when cocklebur leaves were treated with dinitrophenol solution which un coupled oxidative phosphorylation (164). This suppression was observed mostly under the exposure of plants during the second half of the dark period; and in cocklebur leaves, treatment with cobalt ions inhibited flower ing only during the first half of the dark period (165) ; it was then removed by the application of ascorbic acid, cysteine, or glutathione.…”

Section: Trophic Factorsmentioning

confidence: 99%

“…In all experiments, antimetabolite treatments resulted in the inhibition of flow ering in short-day species: in Streptocarpus wendlandii treated with 2-thiouracil (84), in cocklebur treated with 5-fluorouracil, 5-fluoro desoxyuridine and 2, 6-diaminopurine (7, 71,142,164,167), in Ipo maea treated with 5-fluorouracil, 5-fl uorodesoxyuridine, 2-thiouracil and 8-azaguanine (125,204) and in hemp treated with 2-thiouracil (83). It was found that flowering is inhibited either by the direct treatment of buds or after these substances have moved from leaves into buds.…”

Section: Hormonal Factors and Physiologically Active Compoundsmentioning

confidence: 99%

Internal Factors of Plant Flowering

Chaĭlakhyan¹

1968

Annu. Rev. Plant. Physiol.

102

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Access provided by 34.215.51.103 on 05/13/18. For personal use only. Quick links to online contentFurther ANNUAL REVIEWS INTERNAL FACTORS OF PLANT FLOWERING1By MIKHAIL KH. CHAILAKHYAN Timiryazev Institute of Plant Physiology, Academy of Sciences, MoscowThe individual development or the ontogenesis of plants, which begins with the ovary's fertilization or with formation of an embryonic bud and ends with death, comprises the whole cycle of the plant's life and includes all its life processes. The transition of plants from vegetative growth to flowering, when new progeny develops in tissues of the maternal plant, is the most essential period in ontogenesis. The physiological nature of the transformations which precede and condition the formation and develop ment of floral organs is the main subject of this paper.The morphological picture of flower development, outlined in the theory of metamorphosis by the great poet and botanist Goethe, who thought of a flower as a transformed leaf shoot, is now widely recognized and has been developed by numerous scientists (182). The physiology of processes which precede the development of a flower has not been studied as well; the pic ture is vague and contradictory though the earliest conj ectures go back as far as the second half of the last century. And if anybody were asked to name a phenomenon of plant life where the gap between morphology and physiology is the widest, he would certainly indicate flowering.Sachs's hypothesis (162) on plant-forming and especially on flower-form ing substances, which was first published in 1880, was the earliest concept of the physiological nature of plant flowering. Klebs's theory (95) of the role of the ratio of nutrients appeared much later (in 1918). A new phase in the study of the physiological nature of the flowering phenomenon began immediately. In 1918, Gassner (70) found that winter forms require cold and that they differ in this requirement from spring forms; he discovered the phenomenon of thermo induction in plants while in 1920 Garner & Al lard (69) discovered photoperiodism in plants.During the half century that has passed since that time, the physiology of flowering became enriched with new basic data and with essential theo retical conclusions. These findings have been reviewed in articles regularly published in the Annual Review of Plant Physiology (56,62, lOS,112,116,165,172), in detailed reviews published in the Encyclopedia of Plant Phys iology, Volume 16 (119,139,140,153), as well as in other articles and books (34,76,86,107,166,197,204). The present state of the problem has been fundamentally outlined by Lang (109) An answer to the first question can be found in the realm of phenomena where both genetic factors and plant reactions to environmental conditions play a decisive role. Under common natural conditions,fiowering of seed plants takes place after the formation of vegetative organs or, more pre cisely, after they have passed the young age or juvenile stage. The duration of the juvenile period in many plants dep...

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Growth Regulators and Flowering. I. Survey Methods.

Cited by 29 publications

References 19 publications

Inhibition of Photoperiodic Induction by 5-Fluorouracil

Inhibition of Photoperiodic Induction by 5-Fluorouracil

Evaluation of morphological characteristics in Venezuelan maize (Zea mays L.) genotypes under drought stress

Internal Factors of Plant Flowering

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