THE RESULTS OF STUDY SALT RESISTANCE OF WINTER SOFT WHEAT COLLECTION SAMPLES IN KARAKALPAKSTAN
Аннотация
Screening of the world collection more than 320 variety samples of soft winter wheat in the salinity soils of the republic of Karakalpakstan has been presented in this article. The content of chlor ion in the top ploughed horizon in depth of 30 cm of unsalted agro background in the artificially created agro-background makes of 0,043-0,071% and in salted background 0,071-0,089%. At that time content of sulphat ion respectively: 0,012 -0,014 0,132 -0,192%. The results of experiments showed that the level of soil salinization considerably effects on the period of vegetation period, initiation of certain phenologic phase of development, getting of plant stand density and their preservation and also on growth, development and forming plant productivity. Salt resistant donors with positive characteristics and productivity have been picked out. They distinguish by great bushiness, size, grain content in ear and weight of 1000 grains in the salinized background. Variety samples of Avosets; Kerim; GAN -91; Utiqul -96; 040609 and 040812 were the most salt resistant.