Genetics of Self-fertility and Selection of Self-Fertile Lines in Rye (Secale cereale L.)
2000
Heo Hwa-Young | Ha Yong-Woong National Crop Experiment Station, RDA, Suwon (Korea Republic)
Rye breeding using F1 hybrid began about 30 years ago, when cytoplasmically inherited forms of male sterility (CMS) and corresponding nuclear restorers were detected. It is very important to produce inbred lines for making hybrid lines because of strong self-incompatibility in rye. Among the 456 rye germplasms used in hybrid breeding scheme, 24 lines (5.3%) had the above 60% of self-fertility, and six lines of them were selected for their good agronomic characteristics and were used for subsequent inbreeding program. The average self-fertility of selected six lines was 78.4%, ranging from 72.2% to 99.5%.
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