利用分子标记辅助育种技术育成优质高产抗病杂交稻国稻1号

Breeding of Indica Hybrid Rice Guodao 1 with Good Quality, High Yield and Resistance to Bacterial Leaf Blight by Marker-Assisted Selection Technique

国稻1号是中国水稻研究所利用分子标记辅助选择育种技术育成带有抗白叶枯病基因Xa21的恢复系中恢8006,再与印水型胞质不育系中9A组配的中晚兼用杂交稻新组合。该组合参加国家南方稻区区试、江西省区试和各地试种示范,表现高产稳产、米质优(国标3级)、抗性强(抗稻瘟病,中抗白叶枯病)、适应性广、易于制种等特点。于2004年3月通过江西省品种审定,2004年10月通过国家审定。

Guodao 1, derived from the cross of Zhong 9A/Zhonghui 8006, is a new indica hybrid rice combination developed by the China National Rice Research Institute. Its restorer line Zhonghui 8006 with Xa21 gene resistant to bacterial leaf blight (BLB) was developed by way of the molecular marker-assisted selection (MAS) technique. It could be grown as a double-cropping late rice or single-cropping rice. It was characteristic of high and stable yield potential, good grain quality, resistance to blast and BLB, wide adaptability and easiness of F_1 seed production. It was registered and released to commercial production in Jiangxi Province in April, 2004.