Seed Production Ability of Male-Sterile Lines of Common Wheat Induced by the Interaction between an Sv Type cytoplasm and a1BL-1RS Chromosome

Development of hybrid wheat has been unsuccessful despite over 30 years of research in which G type cytoplasm of Tritirum timopheevi was used as the source of malesterility. Alternatively, S' type cytoplasm of Aegilops kotschyi was proposed to be a promising candidate as the male-sterility source for hybrid wheat breeding. Nonaka et al. (1993) developed male-sterile lines of 13 cultivars of common wheat (Triticum aestivum ) by a breeding schelrne which utilized the interaction between an S' type cytoplasm and a I BL-1 RS chromosome proposed by Toriyama et al. (1993).