[Allele structure of polymorphic loci of maize lines and hybrids and its correlation with heterosis level].

Polymorphism of parental lines GK26, Mo17 and lines-testers Od221MB, Od308MB, and Od329 was analyzed by SSR-PCR and genotyping of recombinant inbred lines (RIL) from populations F4, F6 was carried out. Ten microsatellite loci allele combinations of parental lines, lines-testers and the best test cross hybrids were established and their molecular-genetic formulas were derived. The microsatellites allele structure of the best for combining ability lines and high-yield hybrids was investigated.

[The effectiveness of selection for the DNA markers of quantitative trait loci in maize populations].

DNA-markers of some agronomically valuable quantitative trait loci were detected by SSR- and ISSR-PCR. Method of genetic improvement of initial population for polygenic trait complex is proposed basing on direct selection of plants according to their genotype marker profiles. Experimental modelling of marker selection within populations (gamma K26 x Mo17) F3-F4 has been carried out.