Svyetlova N. Lipid-Pigment Complex and Exogenous Bioregulator Application in the Wheat Drought Adaptive Reaction Formation

The carotenoid and lipid composition changes and the peroxidation activity in winter wheat leaves and chloroplasts of different various drought resistances while drought factor action was analysed. The lipid composition and carotenoid relation analysis showed that monogalactosyl diacylglycerol /zeaxanthin and diacylglycerol /(-carotene ratios could characterise the variety adaptive ability to drought action. The monogalactosyl diacylglycerol /zeaxanthin ratio increase in sensitive variety plants and diacylglycerol /(-carotene ratio decrease in drought resistant plant was revealed. The investigation of the new bioregulators - vitalin, proton and triman revealed their antistress action upon wheat adaptive property formation while high temperature and water deficit stress action.