Physiological Indicators of the Water Balance of Plants in Fine-Fiber Varieties and Cotton Lines in Different Irrigation Regimes

The article presents the results on the content of chlorophylls a and b, total chlorophyll, carotenoids, water content and intensity of leaf transpiration in fine-fiber varieties and cotton lines in different conditions of water regime. Compared to optimal water availability, the content of chlorophylls �a� and �b�, total chlorophyll and carotenoids increased in varying degrees, water content and leaf transpiration intensity decreased depending on the individual genotypic response of fine-fiber varieties and cotton lines to the lack of soil moisture in the soil.