GENOME INFLUENCE ON THE SYNTHESIZED POLYPLOID WHEAT PHENOTYPE

Abstract

Presents the results of a study of the effect of genomes on the formation of phenotypes synthesized polyploid species of wheat forms. As objects of study were samples synthesized tetraploid T. erebuni Gandil. AuD, T. palmovae G. Ivanov DAb, hexaploid T. kiharae Dorof. et Migusch. A^bGD and diploid carriers of the original genomes: T. urartu Tum. ex Gandil A^u T. boeoticum Boiss A^b, Aegilops tauschii subsp strangulate D, and tetraploid T. timopheevii, on the basis of which was created the above tetra - and hexaploid species. A detailed examination of artificially synthesized polyploid wheat, with the involvement of the original sources of the genomes, shows the obvious influence of genomes on the formation of their phenotypic characteristics, including formation of public production of signs. So in the phenotype in artificially created tetraploidtion Triticum erebuni A^uA^uDD well enough to see the influence of the genome of original diploid wheat T. urartu A^uA^u. The phenotype of T. palmovae A^bA^bDD, on the contrary in a greater degree dominante  features of a source genome Aegilops tau-schii DD. This allows you to make water that at first as mother  plants were used diploid wheat, and T. palmovae - Ae. tauschii. However, this production characteristic as the number of glosses in the ear they were largely under the control of his father's plants. So T. erebuni, the number of spikelets per spike level per se Ae. tauschii, and T. palmovae, on the contrary, closer to the rate of diploid wheat T. boeoticum A^bA^b. At the hexaploid T. kiharae A^bA^bGGDD, in contrast to the tetraploid T. erebuni A^uA^uDD, the phenotype is not observed the corresponding dominance of the signs of the wheat T. timopheevii and the number of ears he's closer to the source of the DD genome. The results of the evaluation of the influence of the genome on the phenotypic features of the synthesized forms provide an opportunity to more thoroughly and effectively suited to the process of creating polyploid forms.