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The strategy of investigation combined the effects of mutation depression evident at first generation on cell and plant level and peculiarities of recurrent mutagen action. The main purposes of investigations in this area were determination genotype-mutagen interaction for modern Ukrainian winter wheat varieties, identify less sensitive for DAB (1,4-bisdiazoatsetilbutan) genotypes and evolution recurrent mutagenesis as a method in difference alteration on first step of mutation breeding program, which limited next stages by quantity of material for selection. Here we report cytogenetic, plant growth and development characteristics of mutation induction variability of the new wheat varieties and some relationships between means of plants grows and developments, morphometrical parameters, cytogenetic characteristics and different concentrations and types of mutagens at first generation after DAB treatment.

Mutagen depression after recurrent chemical mutagen action at first winter wheat generation