XVI International Botanical Congess

Results of studying the adaptive reactions of plants to environmental factors attracted our attention to the representative of glycerolipides - sulphoquinovosildiacyl glycerol (SL), as a component of thylakoid membranes, which play a specific role in its structural organisation. Combine action of heat and water deficit induced the SL accumulation in the almost all resistant wheat plant chloroplasts except resistans one where the quantity of this compounds was equal to control. The SL content decreased in sensitive variety more drastically (twice), than in the cases of single action of heat or water deficit. Our results evidence the SQDG content increases as under the water deficit so and/or temperature conditions in the resistant variety plants. The phenomenon gives us good grounds for conclusion about special role of theses compounds in adaptive reactions to extreme factors.