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水稻化学杀雄杂种优势利用的研究工作,我们在1978年研究的基础上,1979年春在海南配制19个组合进行化杀制种,夏季又在本院配制127个组合进行化杀制种,同时对1978年的化杀一代种子,在海南鉴定纯度和优势,夏季又在本院种植一代杂种和二代杂种,以鉴定其优势.现将初步结果介绍如下: 一、内容及方法(一) 组合配置用广陆矮四号、南京11号等品种作母本,以配制强优势组合;2、利用大穗、大粒、花粉量大的“献党”作为父本,配制中籼组合;3、化杀与“两系”结合,用IR_(94)、泾紫、广泾等有紫色标记的父本配组,便于拔除自交株,提高杂种纯度;4、选用和不育系异质同核的保持系与相
Based on the research carried out in 1978, 19 combinations were prepared in Hainan Province in the spring of 1979 for the purpose of killing seeds. In the summer, 127 combinations were prepared for killing seeds in our hospital. At the same time, In 1978 to kill the first generation of seeds, in Hainan to identify the purity and advantages of summer in this plant and the generation of hybrids and second-generation hybrids in order to identify its advantages. Now the preliminary results are described below: First, the content and methods (a) combination In order to formulate the strong combination of the two varieties such as Guanglu Dazao No. 4 and Nanjing No. 11, the combination of middle-indica was prepared by using “big sacrificial party” as the male parent with large spike, large grain and large amount of pollen; 3, kill and “two lines ” combined with IR_ (94), Jing Zi, Guang Jing and other purple marked paternal parent group, easy removal of selfing strains, improve hybrid purity; 4, selection and infertility Department of heterogeneous with the core of the holding system and phase