论文部分内容阅读
选取四川省水稻育种攻关组在“八五”前期育成的一批不育系和恢复系，按不完全双列杂交模式组配，获得４２个杂文组合（含３个对照）。１９９３年，在绵阳、成都、重庆和沪州作正规小区试验，鉴评杂交组合的表现。结果表明：参试杂交组合可划分为早、中、迟熟３组，各熟组内产量等１０个性状均存在极显著的基因型、地点及基因型×地点工作效应，这三者的相对重要性因熟组和性状而别。多数组合主要性状表现出了明显的超标优势，在３９个新组合中，比相应对照增产的组合有２７个（占６９．２３％），其中２１个（占５３．８５％）显著；表现高产稳产的早熟组合有早显Ａ／２０１—２、早显Ａ／明恢６３、重六Ａ／明恢６３等９个；中熟组合有辐７４Ａ／）川恢８０２、Ｋ７５Ａ／成恢０４７和Ｋ７５Ａ／明恢６３等；迟熟组合有辐７４Ａ／成恢０４７、珍汕９７Ａ／成恢０４７、辐７４Ａ／明恢６３等。从亲本对杂种的产量效应看，不育系中辐７４Ａ较明显超越Ｄ９０Ａ，接近珍汕９７Ａ；恢复系中成恢０４７相当于２０１—２和川恢８０２接近于明恢６３。
A total of 42 essay combinations (including 3 controls) were obtained from a batch of sterile and restorer lines bred by Sichuan Rice Breeding and Research Group in the early Eighth Five-year Plan. In 1993, in Mianyang, Chengdu, Chongqing and Shanghai for regular community trials, evaluation of hybrid performance. The results showed that the tested hybrid combinations could be divided into three groups: early, middle and late ripening. There were extremely significant genotypes, locations and genotype × site effects in 10 traits, Importance due to the group and traits do not. Among the 39 new combinations, 27 (69.23%) were the major combinations with increased yield, of which 21 (53.85%) were significant; the performance was high Premature stable combination of early A / 201-2, early A / Ming Hui 63, heavy six A / Ming Hui 63 and other nine; moderate combination of radiation 74A /) Chuan Hui 802, K75A / Cheng Hui 047 and K75A / Ming Hui 63, etc .; late combination of radiation 74A / Cheng Hui 047, Zhen Shan 97A / Cheng Hui 047, spoke 74A / Ming Hui 63 and so on. From the effect of yield on the hybrids, the 74A of the male sterile lines obviously surpassed that of D90A and approached that of Zhenshan 97A. The restorer lines Zhong Cheng Hui 047 was equivalent to 201-2 and Chuan Hui 802 was close to Minghui 63.