Lyudmila Laikova

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The S1, S2 and S3 genes of the induced sphaerococcoid mutation in common wheat (Triticum aestivum) were mapped using three different F2 populations consisting of 71–96 individual plants. Twenty-four microsatellite markers from homeologous group 3 of T. aestivum were used to map the S1, S2 and S3 genes on chromosomes 3D, 3B and 3A, respectively. The S1 locus(More)
Genotypes for the glume colour character have been studied in 27 cultivars of common wheat (Triticum aestivum L.) originated from old landraces, and 1 specimen of T. petropavlovskyi Udacz. et Migusch. by means of analysis of the F2 populations. The following tester lines have been used: white-glumed ‘Novosibirskaya 67’ ‘Diamant I’, and ‘Federation’,(More)
Advanced backcross QTL analysis was used to identify QTLs for seedling and adult plant resistance to leaf rust in introgression lines derived from a cross between the spring wheat cultivar ‘Saratovskaya 29’ and a synthetic allopolyploid wheat (T. timopheevii/T. tauschii). F2 mapping populations involving two backcross selections (‘BC5’ and ‘BC9’ lines) were(More)
The results of genetic studies of common wheat that have been conducted in Novosibirsk, Russia, over the past 20 years by a research team are summarized. The research strategy was to develop a collection of aneuploids and substitution lines to be further used for chromosomal localization of genes and in the study of the genetic variability of wheat. On the(More)
Bread wheat (Triticum aestivum) inflorescences, or spikes, are characteristically unbranched and normally bear one spikelet per rachis node. Wheat mutants on which supernumerary spikelets (SSs) develop are particularly useful resources for work towards understanding the genetic mechanisms underlying wheat inflorescence architecture and, ultimately, yield(More)
Little is known about the relationship between compact spike loci in hexaploid wheat species. We studied two new compact spike mutants of common wheat Triticum aestivum L. (2n = 6x = 42, genome formula BBAADD). The new compact spike genes, C 739 of MCK 739 and Cp of near-isogenic line Mironovskaya 808 (Vrn1), were mapped using aneuploid stocks and(More)
Ear emergence time and response to vernalization were investigated in 12 alien substitution lines in which a pair of chromosomes 5A of recipient spring wheat cultivars was replaced by a pair of chromosomes 5R of Siberian spring rye ‘Onokhoiskaya’. The recipients were 12 spring cultivars of common wheat, each carrying different Vrn genes. Spring rye(More)
Immune lines resistant both to leaf rust and to powdery mildew were constructed on the basis of common wheat cultivar Saratovskaya 29. Synthetic wheat Triticum timopheevii/Aegilops squarrosa (AAGGDD, 2n = 42) of Savov (Bulgaria) was used as a source of resistance genes. Using cytological analysis of BC2, we selected resistant plants (21") free from meiosis(More)
Synthetic hexaploids are bridges for transferring new genes that determine resistance to stress factors from wild-type species to bread wheat. In the present work, the method of developing the spring bread wheat variety Pamyati Maystrenko and the results of its study are described. This variety was obtained using one of the immune lines produced earlier via(More)
The progeny of BC6F2–4–BC9F2–4 has been analyzed for resistance to brown rust (Lr genes) and powdery mildew (Pm genes). This progeny was obtained due to introgression of the alien material from the synthetic hexaploid wheat Triticum timopheevii/Aegilops squarrosa (= Triticum tauschiiaAGGDD, 2n = 42) into the common wheat variety Saratovskaya 29. Against the(More)