Efficiency of use of selection-genetic parameters in selection of flux

Abstract

The purpose. To determine regularities of inheritance by hybrids of the 1-st generation and the level of heritability of attributes of seed productivity at hybrids of the 2-nd generation of flux for use in selection process and creation of new varieties. Methods. Extent of prevalence (hp) of elements of seed productivity was determined at 18 reciprocal hybrids of the 1-st generation by J. Briubecker formula; extent of heterosis — by F. Petz and K. Frey formula in presentation of L.S. Zenischeva. Factors of heritability in broad sense (H2) were determined at 24 combinations of hybrids of the 2-nd generation by I. Mahmud and H. Kramer formula according to A.Ya. Al graduation. Statistical analysis of experimental data was spent by means of program MSTAT-C. Results. Types of inheritance and extent of heterosis at hybrids of the 1-st generation of flux by mass of seeds from a plant and elements of seed productivity (amount of boxes on a plant, amount of seeds in a box, mass of 1000 seeds) are specified. Hybrid combinations with effect of heterosis are fixed. Different level of heritability of attributes of seed productivity at hybrids of the 2-nd generation is established. Hybrid combinations with high factors of heritability of seed productivity (Redwood 65/Kirovogradsyi 2 — 0,88, Kirovogradsyi 2/Redwood 65 — 0,87, Kirovogradsyi 2/Redwing — 0,84, Redwing/Kirovogradsyi 2 — 0,82) and its elements on which it is possible to forecast high performance of selection in early generations are selected. The created high-heterosis combinations and combinations with high indexes of factors of heritability by elements of seed productivity are involved into selection process. Conclusions. Efficiency of use of selection-genetic parameters in selection of flux is established and the valuable initial stock is created.