Modification of stress tolerance by dehydration pretreatment in winter rape hypocotyls [water stress, dehydration tolerance, solute leakage, hypocotyls, Brassica napus]
1980
Shcherbakova, A. (Warsaw Univ. (Poland). Inst. of Botany) | Kacperska-Palacz, A.
Dehydration of isolated rape hypocotyls (Brassica napus L. var. oleifera L. cv. Gorczanski) to a water saturation deficit of about 60 per cent resulted in increased tolerance to subsequent desiccation and to prolonged immersion in water. Dehydration pretreatment followed by restoration of tissue turgidity, caused a decrease in leakage of electrolytes, ultraviolet-absorbing materials and ninhydrin-reactive substances from the desiccated or water immersed hypocotyl tissue. A hardening effect of tissue dehydration is supposed to be related to an improved stability of cell membranes
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