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The hybridization of tetraploid wheat with the octoploid wheat-wild rye amphiploid Elytricum fertile and the chromosome behavior in meiotic MI

Motsnyi I.I., Prokopovich E.L., Simonenko V.K.

 




The hybridization and chromosome behaviour regularities at meiotic MI of reciprocal F1 hybrids of tetraploid wheats T. durum and T. turgidum with 56-chromosome incomplete wheat-Elymus amphiploid (IWEA) Elytricum fertile, were investigated. Variation of main indices of the hybridization has been revealed to be determined by variance of such factors as cross direction, genotype peculiarities of wheat strains and their interaction. Elymus sibiricus genome, contained in IWEA karyotype, carries several genes, that can suppress wheat diploidization system. Reduction of homologous chromosome synapsis is not determined by these genes, but is connected with influence of other Elymus sibiricus chromosome factors.

Tsitologiya i Genetika 2000, vol. 34, no. 1, pp. 34-42



Motsnyi I.I., Prokopovich E.L., Simonenko V.K. The hybridization of tetraploid wheat with the octoploid wheat-wild rye amphiploid Elytricum fertile and the chromosome behavior in meiotic MI, Tsitol Genet., 2000, vol. 34, no. 1, pp. 34-42.




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