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以 4个光 (温 )敏核不育系培矮 6 4 s、N4 2 2 s、10 8s、L S2 s分别与 12个生态型材料配组 ,对 F1进行产量及产量构成因素的分析。结果发现 ,培矮 6 4 s与爪哇稻、华北育成粳、韩国地方粳、韩国育成粳、南方育成粳、东北育成粳、东北地方粳等为强优势配对模式 ;南方地方籼、光壳稻、华北地方粳、新株型籼稻、南方育成籼、华北育成粳等为 N4 2 2 s的优势生态型 ;南方地方籼、华北地方粳、韩国地方粳、新株型籼稻等是 10 8s的优势生态型 ;L S2 s与爪哇稻、华北地方粳、华北育成粳等配组优势较强。探讨了水稻优势生态型的筛选问题和这 4个不育系及这 12个不同生态型材料在北方两系杂交粳稻中的应用。认为培矮 6 4 s、N4 2 2 s、10 8s这 3个不育系具有较好的广亲和性和配合力 ,在华北两系杂交粳稻育种中有一定的利用价值 ;L S2 s不具备广亲和性 ,配合力也较差 ,在育种中可间接利用其大粒的优势。华北粳是 4个不育系的优势生态型 ,因此在水稻优势生态型的研究中 ,本地恢复系和不育系更应值得注意
The yield and yield components of F1 were analyzed by 4 light (temperature) sensitive nuclear sterile lines Pei’ai 6 4 s, N4 2 2 s, 10 8s and L S2 s with 12 ecotypes, respectively. The results showed that Pei’ai 6 4 s was strongly dominant pairing pattern with Java, North China, japonica, South Korea, Chengbai, South, Yucheng and northeast of China. Southern Indica, Husk, North China local japonica rice, new plant type indica rice, South Yuyao indica rice and North China Yucheng japonica rice were the dominant ecotypes of N4 2 2 s. Southern China indica, North China local japonica, South Korean local japonica rice and new plant type indica rice were the dominant ecotypes of 108s. L S2 s and Java rice, North China local japonica, North China Yucheng japonica and other groups with strong advantages. This paper discussed the screening of dominant ecological type in rice and the application of the four CMS lines and the 12 different ecotypes in two-line japonica hybrid rice in northern China. The results showed that Pei’ai 6 4 s, N4 2 2 s and 10 8s had good broad compatibility and combining ability and had certain value in breeding of two-line japonica hybrid rice in North China. L S2 s With a wide range of affinity, with poor co-ordination in breeding can indirectly use the advantage of its large grain. North China japonica is the dominant ecotype of four CMS lines, so in the study of the dominant ecotypes of rice, the local restorer line and CMS should be worth noting