Secondary dihaploids Solanum tuberosum L. as a basis for potato breeding at the diploid level with objective on fertility lifting and pathogen resistance | Вторичные дигаплоиды Solanum tuberosum L. как основа для селекции картофеля на диплоидном уровне, направленной на повышение фертильности и устойчивости к патогенам
2011
Luksha, V.I. | Savchuk, A.V., National Academy of Sciences (Belarus). Institute of Genetics and Cytology | Ermishin, A.P., National Academy of Sciences (Belarus). Institute of Genetics and Cytology
Study on availability fertile secondary dihaploids in hybridization of high fertility sources with sterile male and low fertility primary dihaploids, which interested by economically valuable traits for marker diploid level breeding was realized in the central part of the Republic of Belarus in 2009-2010. There were presented results of integrated estimation of secondary dihaploids from inferior fertility primary dihaploids of light blight resistant variety Alpinist. The objective of the realized estimation was the genotypes selection with a complex of availability factors to combining breeding at the diploid level (high functional male and female fertility) and valuable traits. Starting material was potato (Solanum tuberosum) hybrids, resulting from pollination of primary dihaploids of Belarusian high leaves resistant to late blight (Phytophthora infestans) breed Alpinist by five high fertility dihaploids. Hybridization of sterile male primary dihaploids of potato breed Alpinist and high fertility diploid clones, which were received in the result of specific breeding to functional pollen fertility, allow to harvest comparatively high number of fertile male genotype breeding population was set. Authors succeeded to obtain twenty genotypes with high male fertility, self-compatibility, relatively high productivity and leaves light blight resistance from 233 clones of hybrid combinations between three different primary dihaploids of Alpinist variety and five sources of high fertility. In consequence of integral assessment of fertile male hybrids were selected clones with comparatively high tubers productivity, potato scab (Actinomyces scabies) and light blight resistance, possessed H1 and Gro1 genetic markers of resistance to eelworm (Globodera rostochiensis)and Ry sub(and) genetic marker of resistance to Y-virus of potato.
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