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杂交水稻能不能不经过制种,把杂种优势固定下来代代遗传?据新华社记者罗萍报道:江西省于都县农技干部刘点祥,用化学药剂亚硝基R盐诱变籼优二号性细胞后得到的种子,显示了这种能力。 杂交水稻必须到海南岛制种,开销大,成本相当高,是推广杂交永稻的一大障碍。一九七七年,刘点祥开始了这一课题的研究工作,采用的是国际上近二十年才新兴起来的化学诱变育种技术。七月间,他在杂交水稻田里挑选一些籼优二号植株,分别在孕穗
Hybrid rice can not be without seed, the heterosis fixed inheritance from generation to generation? According to Xinhua News Agency reporter Luo Ping reported: Jiangxi Agricultural Science and Technology cadres Liu Dianxiang County, with chemical nitrosyl R salt mutagenesis Indica The seeds obtained after the second sex cells show this ability. Hybrid rice must be planted in Hainan Island, overhead, the cost is quite high, is to promote hybrid rice a major obstacle. In 1977, Liu Xiang-xiang started the research work of this subject, using the chemical mutation breeding technology that was only emerging in the world for nearly two decades. In July, he picked some Indica-2 plants in hybrid paddy fields, respectively, at booting