BT型粳稻不育系8006A的选育与应用

Breeding and Utilization of BT-type CMS Line 8006A in Japonica Rice

8006A是用BT型不育系863A与优质早熟晚粳稻品种8006杂交并回交转育而成的早熟晚粳稻不育系,具有米质较优、不育性稳定、较易制繁种等特点,所配组合结实率和千粒重高、丰产性好、米质较优,具有较好的应用前景。8006A及其与恢复系湘晴配组育成的新组合苏粳优2号(原名T优011)均于2006年1月通过江苏省品种审定。

8006A, derived from the cross and backcrosses of 863A, a BT-type japonica CMS line with stable male sterility, and 8006, a late japonica rice variety with early maturity and good grain quality, is a new early maturing late BT-type CMS line in Japonica rice. It is characteristic of stable male sterility, good grain quality, and high hybrid seed production yield. Its hybrids showed good lodging resistance, high seed set, heavy 1 000-grain weight, high grain yield and good grain quality. The CMS line 8006A and its hybrid Sujingyou 2 or T You 011 （8006A/ Xiangqing） were both examined and approved to release to commercial production in Jiangsu Province in January, 2006.