【摘要】 以株型优良的高产品种特青早作为理想株型的基因供体 ,与恢复系明恢 63杂交 ,经连续多代选择 ,育成了集高产优良性状基因与恢复基因于一体的新恢复系蓉恢 90 6。该恢复系配合力高、恢复力强、恢复谱广 ,株形结构、米质和抗性等特性都比明恢63有相应的提高和改良。用它所配组合表现综合性状好、杂种优势强。其中 ,冈优 90 6、Ⅱ优 90 6分别于 1997年、1999年通过四川省品种审定委员会审定 ,迄今已在四川、江西、安徽、湖北等省累计推广 13万多hm2 ,并显示出较好的应用前景更多还原

【Abstract】 Ronghui 906, a new restorer line into which the high yielding characters and restorer genes have been incorporated, is developed from the cross of Teqingzhao, a high yielding variety with good plant type, and strong restorer line Minghui 63 through successive selections for many generations. It has high combining ability, strong restoring ability and wide restoring spectrum. It is also better than Minghui 63 in the characters of plant type, grain quality and resistance. The hybrids derived from Ronghui 906 show a strong heterosis and have a good integrated agronomic character, among which Gangyou 906 and Ⅱ You 906 were certified to release to commercial production in Sichuan Province in 1997 and 1999, respectively. Up to now, the combinations of Ronghui 906 have occupied a total area of over 130 000 hm 2 in the provinces of Sichuan, Jiangxi, Anhui and Hubei, and show a good applied prospect.更多还原