Sowing characteristics of the seeds of sugar beet sterility maintainers and types of their inheritance
Journal Title: Новітні агротехнології - Year 2017, Vol 0, Issue 5
Abstract
Purpose. To determine the phenotypic degree of dominance for the characteristics of germination energy, seed germination, and 1000-seed weight in sterility maintainers of sugar beet hybrids obtained from the dialectal scheme, as well as their types of inheritance in the progeny. Methods. The analysis involved 5 sterility maintainer lines selected in terms of the complex of economic-valuable signs and their 20 dialectical hybrids. Crossings were carried out on the plots of free pollination by complete dialect scheme. Seed qualities were determined in accordance with the State Standard of Ukraine DSTU 2292-93. The degree of phenotypic manifestation of quantitative traits (assessment of the hp dominance) was determined using the Beil–Atkins formula Results. The components of the seed quality in the sterility maintainers were determined and promising for further breeding lines were selected. The best lines in terms of germination vigour are the Ot 1 and Ot 4 lines, in terms of germination Ot 3 and Ot 4 lines. The dialectical hybrids were divided according to the type of the sign inheritance. In terms of germination vigour they were distributed as follows: depression and intermediate inheritance accounted for 25%, positive and negative dominance 20% and over-dominance 10%. In terms of seed germination, the tendency remained. On the basis of 1000-seed weight, 40% of the hybrids showed heterosis. Conclusion. Seed qualities of hybrid seeds combine the inheritable properties of both parent components. The predominant inheritance type for germination vigour and seed germination signs were depression and negative dominance, while for 1000-seed weight depression and over-dominance. In direct and reverse hybrids, the effect of reciprocal effects on the phenotypic manifestation of the components of seed quality was found, which is important in creating source material of improved signs or recombinant forms.
Authors and Affiliations
M. Kornieieva, L. Falatiuk, L. O. Suslyk, Ya. A. Melnyk
Keywords
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- EP ID EP614283
- DOI 10.21498/na.5.2017.122130
- Views 217
- Downloads 0
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