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.RUSTAMOV, .ERGASHEV, A.ABDULLAEV

WATER EXCHANGE OF SOFT WHEAT IN A PROLONGED SOIL

DROUGHT

Institute of Botany, Plants Physiology and Genetics, Academy of Sciences of the Republic of Tajikistan It is shown that the total water content in the leaves of wheat varieties examined under soil drought as compared to the embodiment of "watering" is reduced by 5-10%. On the background of water-holding capacity of soil drought leaves studied cultivars in the tillering phase is markedly increased, and vice versa booting phase decreases. The transpiration of leaves in varieties Golokoloska in conditions of drought decreased almost twice, and the cultivar Galgalos about three times. In the phase of booting cultivar Golokoloska real water deficit in the embodiment of "drought" has reached 17.5%, against 12.4% for irrigation, cultivar Galgalos it was

18.5 and 12%, and 21.7 and 12.6%, respectively.

Key words: wheat drought water exchange water content water retention transpiration water deficit.



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