| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Germination of cotton cultivar seeds under water stress induced by polyethyleneglycol-6000
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| Autores: |
Meneses,Carlos Henrique Salvino Gadelha
Bruno,Riselane de Lucena Alcântara
Fernandes,Pedro Dantas
Pereira,Walter Esfrain
Lima,Leonardo Henrique Guedes de Morais
Lima,Marleide Magalhães de Andrade
Vidal,Márcia Soares
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| Data: |
2011-04-01
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| Ano: |
2011
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| Palavras-chave: |
Gossypium hirsutum var. latifolium L.
PEG-6000
Vigor
Water potential
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| Resumo: |
The physiological quality of cotton cultivar seeds (Gossypium hirsutum var. latifolium L.) was evaluated in laboratory by the simulation of water potentials with polyethyleneglycol-6000 (0.0; -0.2; -0.4; -0.6; -0.8 and -1.0 MPa), at 25ºC using germitest paper as substrate. A completely randomized design in a 4 × 6 factorial scheme with four replications of 50 seeds each was used. The studied variables were: germination percentage, first count of germination, germination velocity index, accelerated aging in water, electrical conductivity, humidity, vigor classification, radicle length and radicle/shoot length ratio. The effect of water stress on seed viability and on plantlet vigor was severe at potentials below -0.4 MPa. The 'CNPA 187 8H' cultivar was the least sensitive to the tested osmotic potentials, both in terms of germination and of vigor. The 'BRS-201' cultivar was mostly affected by the viability and vigor tests under water deficit conditions. Differential viability and vigor between cultivars were observed under the water stress levels.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200001
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/S0103-90162011000200001
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.68 n.2 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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