一、杂种优势利用问题关于水稻细胞质雄性不育的杂种优势利用问题,一些国家正从籼与粳、栽培稻与野生稻间杂交等方面,寻找雄性不育系,研究三系配套。据报道,现有五个导致雄性不育的细胞质为新城,渡边,埃里克森等人所发现,日本有三个细胞质雄性不育系。渡边在研究病毒时找到不育株,经与“藤坂5号”回交10代育成不育系,但保持系尚未找到。硫球大学新城把籼稻“钦苏拉春稻Ⅱ”(Chinsurah Boro ⅠⅠ)导致雄性不育的细胞质转移到粳稻品种“台 First, the utilization of heterosis With regard to the utilization of heterosis in rice cytoplasmic male sterility, some countries are looking for male sterile lines from the indica and japonica, hybrid rice cultivation and wild rice, etc., to study the three lines supporting. According to reports, there are five existing cytoplasms that cause male sterility for the Metro, Watanabe, Erickson and others found that Japan has three cytoplasmic male sterile lines. Watanabe in the study of the virus to find sterile plants, and “Fujisaka 5” backcrossed 10 generations of sterile, but the maintainer has not yet been found. The new city of Soybean University transferred the cytoplasm of male sterility induced by indica rice “Chinsurah Boro Ⅰ Ⅰ” to "Taiwan