Grain Sorghum Seed Germination under Moisture and Temperature Stresses<sup>1</sup>

Evans, W. F.; Stickler, F. C.

doi:10.2134/agronj1961.00021962005300060004x

Cited by 18 publications

(11 citation statements)

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“…Germination was slightly depressed at higher temperatures (>30°C). EVANS and STICKLER (1961) reported a slower germination in sorghum at 17 °C than at 27 °C. PINTHUS and ROSENBLUM (1961) also showed that grain sorghum germination was over 80 % at 10 °C, but was delayed and reduced at 8 °C.…”

Section: Resultsmentioning

confidence: 96%

Interaction of Salinity and Temperature on the Germination of Sorghum

Esechie

1994

J Agronomy Crop Science

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Laboratory studies were conducted to investigate the effect of salinity × temperature interactions on the germination of sorghum. Sorghum bicolor (L.) Moench. Sorghum seeds were sown in petri dishes with saline solutions of varying concentrations (electrical conductivities of 0.01, 6.4, 12.2, 17.4, 22.6, 27.2, 32.1, and 37.2 dSm‐1) prepared with NaCl. The germination responses of the seeds were determined over a wide range of temperatures (15, 20, 25, 30, 35 and 40 °C) for a period of 8 days. Salinity × temperature interactions were highly significant at each counting date. Although, increased salinity resulted in decreased germination percentages, the detrimental effect of salinity was generally less severe at higher temperatures. Germination rate index, computed from germination counts taken every 2 days, was influenced by salinity and temperature in a similar pattern as final germination. Seed germination was more tolerant to salinity at germination temperatures of 30–40 °C than at 15–25 °C.

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Section: Resultsmentioning

confidence: 96%

Interaction of Salinity and Temperature on the Germination of Sorghum

Esechie

1994

J Agronomy Crop Science

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“…As diferenças observadas entre os dez genótipos dentro de cada nível de potencial osmótico (Tabelas 2 a 5) devem-se, certamente, às variações de origem genética; pelo vigor genético explica-se por que alguns genótipos são mais sensíveis a condições adversas, como déficit hídrico, inclusive numa mesma espécie (Evans & Stickler, 1961;Jensen, 1971;Popinigis, 1977;Carvalho & Nakagawa, 1980).…”

Section: Resultsunclassified

“…Para Bewley & Black (1985), a água é o fator que exerce maior influência sobre o processo de germinação de sementes; quando o potencial de água no meio externo é reduzido, em níveis altamente adversos, não há germinação, afetando o estabelecimento e a produção das culturas (Hunter & Erickson, 1952;Evans & Stickler, 1961;Jensen, 1971;Singh & Singh, 1983a).…”

Section: Introductionunclassified

“…Entre os produtos químicos mais usados, incluem-se cloreto de sódio (Parmer & Moore, 1968;Sharma, 1973Sharma, e 1976Lopes et al 1989), manitol (Evans & Stickler ,1961;Parmer & Moore, 1968;Lopes et al 1989), sulfato de sódio (Campos & Assunção, 1990) e polietileno glicol (Parmer & Moore, 1968;Sharma, 1976;Hadas, 1977); dentre eles, destaca-se o polietileno glicol (PEG) ou lutrol, comercialmente conhecido como Carbowax, um polímero químico de cadeia longa, inerte, não iônico, altamente solúvel em água. Pode ser usado como agente osmótico, pois não interfere nos processos metabólicos dos vegetais (Lagerwerff et al 1961;Levitt, 1972).…”

Section: Introductionunclassified

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DETERIORAÇÃO, ENDURECIMENTO E ANORMALIDADES EM SEMENTES E PLÂNTULAS DE ALGODOEIRO HERBÁCEO (Gossypium hirsutum L. r. latifolium H.) SOB ESTRESSE HÍDRICO

Pereira

Fernandes

Beltrão

1998

Rev. bras. eng. agríc. ambient.

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RESUMOConduziu-se um experimento em laboratório, com o objetivo de se estudar o comportamento germinativo de sementes de 10 genótipos de algodoeiro herbáceo (Gossypium hirsutum L. r. latifolium H.) de fibras médias, de promissora potencialidade produtiva e tecnológica, e identificar os mais e os menos sensíveis em baixos níveis de potencial osmótico (0.0, -0.2, -0.4, -0.6, -0.8 e -1.0MPa), simulados por polietileno glicol-6000; foi utilizado papel Germitest, num delineamento inteiramente casualizado, em esquema fatorial 10 x 6, com 4 repetições, cada uma contendo 50 sementes. Foram verificadas diferenças de comportamento entre os genótipos de algodoeiro herbáceo estudados nos diversos níveis de estresse hídrico; a percentagem de sementes deterioradas e de plântulas anormais, nos dez genótipos, diminuiu mas a de sementes duras aumentou, nos níveis de maior concentração de PEG-6000. As cultivares CNPA Precoce 2 e CNPA Precoce 1 são as menos sensíveis a baixos potenciais osmóticos (-0,6 e -0,8MPa), enquanto LG ROGERS e CNPA 7H são medianamente sensíveis. A linhagem CNPA 86-1195-1 é a mais afetada.Palavras chave: potencial hídrico, simulação de seca, PEG-6000, germinação DETERIORATION, HARDENING AND ABNORMALITIES IN SEEDS AND SEEDLINGS OF UPLAND COTTON (Gossypium hirsutum L. r. latifolium H.) GENOTYPES UNDER WATER STRESS ABSTRACTWith the objective os studying the behavior of germination of the best ten genotypes developed by Embrapa Breeding Program of upland cotton (Gossypium hirsutum L. race latifolium H.) of media fibers, and to identify the more and the less sensitive, in six levels of the osmotic potential (0.0, -0.2, -0.4, -0.6, -0.8 and -1.0MPa), induced by polyethylene glycol-6000, a trial in laboratory was carried out, making use of the Germitest paper, in a experimental design completely randomized, in a 10 x 6 factorial scheme, with 4 replications, each consisting of 50 seeds. There was difference of behavior between the genotypes in study of cotton, between different water stress levels. The percentage of deteriorated seeds and abnormal seedlings, on ten genotypes declined, but the percentage of seeds without absorption of water increased, in the major PEG-6000 concentration levels. The cultivars ¹ Parte da dissertação de Mestrado do primeiro autor apresentada à Universidade Federal da Paraíba

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“…In an experiment of sorghmn gennination with osmotic tension solutions, gennination progressively decreased with increasing m::>isture tensions from 0 to 15 atm. (Evans am Stickler, 1961 soil (Colani-Terril complex). '!he soil moisture tension levels were -0.3, -1.0, -2.0, -5.0, -10.0, ani -15.0 bars.…”

Section: Shattercane Seed Weightmentioning

confidence: 99%

Shattercane (Sorghum bicolor (L.) Moench) biology as affected by different agronomic practices

Oyarzabal¹

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Grain Sorghum Seed Germination under Moisture and Temperature Stresses¹

Cited by 18 publications

References 3 publications

Interaction of Salinity and Temperature on the Germination of Sorghum

Interaction of Salinity and Temperature on the Germination of Sorghum

DETERIORAÇÃO, ENDURECIMENTO E ANORMALIDADES EM SEMENTES E PLÂNTULAS DE ALGODOEIRO HERBÁCEO (Gossypium hirsutum L. r. latifolium H.) SOB ESTRESSE HÍDRICO

Shattercane (Sorghum bicolor (L.) Moench) biology as affected by different agronomic practices

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Grain Sorghum Seed Germination under Moisture and Temperature Stresses1

Cited by 18 publications

References 3 publications

Interaction of Salinity and Temperature on the Germination of Sorghum

Interaction of Salinity and Temperature on the Germination of Sorghum

DETERIORAÇÃO, ENDURECIMENTO E ANORMALIDADES EM SEMENTES E PLÂNTULAS DE ALGODOEIRO HERBÁCEO (Gossypium hirsutum L. r. latifolium H.) SOB ESTRESSE HÍDRICO

Shattercane (Sorghum bicolor (L.) Moench) biology as affected by different agronomic practices

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Grain Sorghum Seed Germination under Moisture and Temperature Stresses¹