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1选育过程69优02是用自选三系不育系69A与自选恢复系R02配组选育而成的杂交早稻新组合。籼型三系不育系69A(曾用名绣丰A)是用优1B与博B杂交,经系统选育,在F5代挑选优良的早熟株与珍籼97A进行回交转育而成。该不育系的不育性和农艺性状稳定。父本R02是2003年早季利用R402为母本,R61为父本,进行有性杂交,当年晚稻翻秋种植F1并混收。2004年经过一年两代在南昌种植,选择熟期早、农艺性状优良,外观品质好的早熟
Breeding process 69 You 02 is a new combination of early-maturity hybrid rice selected from a combination of self-selected three-line male sterile line 69A and self-selected restorer line R02. Indica CMS line 69A (formerly known as embroidered Feng A) is a hybrid between IB and Bo B, which was bred by the system and backcrossed in the F5 generation. The sterility and agronomic traits of the CMS were stable. The male parent R02 was R402 as the female parent and R61 as the male parent in early 2003. Sexual crossbreeding was carried out in that year. In 2004 after two generations of planting in Nanchang a year, choose mature early, good agronomic character, appearance of good quality precocious