무우의 雄性不稔性에 對한 遺傳因子 分析

Gene analysis of male sterility in radish, raphanus sativus L.

Using spontaneous male sterile individual of radish, cultivar Euisung-banchung, the analysis of genetic mechanism of male sterility was attempted. MS lines, in general, had small floral organs, late flowering time and yellowish floral buds, which varied among different lines. Pollen sterility was caused by the interactions of plasmagene(S) and a single pair of homo recessive karyogene(msms). The two genotypes, Smsms and Nmsms, make it possible to induce and maintain the male sterility of radish. The discovery of male sterile individuals seemed to be prevented by the presence of few individuals with S cytoplasm, though the individuals of Nmsms were prevalent in natural population of radishes.