Abstract:
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 Avoset s; Kerim; GAN 91; Utiqul 96; 040609
and 040812 were the most salt resistan |
