[Results of hybridization of spring and winter varieties of hard wheat in conditions of the north-east of Belarus]
2007
Latypov, A.Z. | Duktova, N.A.,Belarus State Academy of Agriculture, Gorki (Belarus)
Research results of peculiarities of development of winter varieties of hard wheat at very early spring sowing without preliminary vernalization are presented. Possibility and direction of their usage in hybridization with spring varieties is evaluated. Regularities of formation, appearing and inheriting of economic and valuable traits in spring-winter hybrids wheat in conditions of introduction have been established. With the purpose of increase of genotype diversity and broadening of potential productivity of spring hard wheat the application of spring-winter hybridization is efficiently. Expediently thus to conduct super early winter sowing without preliminary vernalization. Ovaries of hybrid grains at spring - winter hybridization are much bigger at use as the parent form of spring variety, however productivity of hybrids is above in combinations where the parent form is a winter variety. Spring - winter hybrids are characterized by very high heterosis with respect to traits of the productivity of the main ear and plant and also on productive bushiness. With a view of increase in genotype diversity and expansion of potential of efficiency of spring hard wheat the application of spring-winter hybridization is effective. Expediently thus to spend superearly spring sowing of winter crops without preliminary vernalization. The ovarying of hybrid grains at spring-winter hybridization is above at use of spring variety as the parent form. However efficiency of hybrids is above in combinations where the winter variety is the parent form. Spring-winter hybrids are characterized by very high heterosis on attributes of efficiency of the main ear and a plant, and also on bushiness production. It specifies to efficiency and perspectivity of use of spring-winter hybridization for creation of new highly productive varieties of spring hard wheat adapted for conditions of Belarus
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