Visn. Hark. nac. agrar. univ., Ser. Biol., 2017, Issue 3 (42), с. 92-101


R. A. Yakymchuk

Pavlo Tychyna Uman State Pedagogical University
Uman, Cherkasy region, Ukraine)

The inheritance nature of ear morphological features and productivity elements of hybrids F1 and F2, resulted from crossing of speltoid hemomutant with soft winter wheat, was studied. Signs of speltoidity, red color of glumes and awnlessness were dominant. Such quantitative parameters of productivity elements of hybrids F1 as stalk and ear length, number of ears per main spike were close to the indicators of speltoid mutant and showed intermediate, partially dominant and super dominant types of inheritance. Dihybrid cleavage into the forms with speltoid, square headed and variations of lutescens/erythrospermum, with a higher number of speltoid plants, which confirms that an ear form is controlled by two non-allele genes, was seen in hybrids F2. The lack of independent inheritance of an ear form and the availability of awnness within individual phenotype classes prove the linkage of genes controlling these features. Red coloration of glumes showed a dominant monogenic nature of inheritance.

Key words: Triticum aestivum, speltoid mutant, ear form, phenotypic dominance, genetic analysis



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