2000
DOI: 10.1590/s1415-43662000000300017
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Infecção de sementes e anormalidade de plântulas de feijão, em função do condicionamento osmótico induzido por polietileno glicol-6000

Abstract: Sementes de dez cultivares de feijão (Phaseolus vulgaris L.) foram submetidas a seis níveis de tensão osmótica (0, - 0,2, - 0,4, - 0,6, - 0,8 e - 1,0 MPa) induzidos por polietileno glicol-6000 (PEG-6000) com o objetivo de se estudar os seus efeitos sobre a percentagem de sementes infectadas e plântulas anormais, durante teste de germinação, identificando-se os genótipos mais tolerantes. O experimento foi conduzido em germinador com temperatura e umidade relativa controladas, utilizando-se como substrato o pape… Show more

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“…As a way to circumvent this problem, water-stress conditions may be simulated in laboratory by using solutions with different osmotic potentials, which are usually obtained by adding distinct concentrations of polyethylene glycol (PEG) in the germination medium. PEG is often used for this purpose because it is chemically inert, non-toxic to the seeds, and works as an strong osmotic agent (Villela et al, 1991;Queiroz et al, 2000;Meneses et al, 2011).…”
Section: Introductionmentioning
confidence: 99%
“…As a way to circumvent this problem, water-stress conditions may be simulated in laboratory by using solutions with different osmotic potentials, which are usually obtained by adding distinct concentrations of polyethylene glycol (PEG) in the germination medium. PEG is often used for this purpose because it is chemically inert, non-toxic to the seeds, and works as an strong osmotic agent (Villela et al, 1991;Queiroz et al, 2000;Meneses et al, 2011).…”
Section: Introductionmentioning
confidence: 99%