优质两系杂交中稻新组合广两优272的选育及应用

Breeding and Application of New Two-line Medium Hybrid Rice Combination Guangliangyou 272 with Fine Quality

广两优272是湖北省农业科学院粮食作物研究所以自育恢复系R7272与两系不育系广占63-4S组配的两系杂交中稻新组合,具有稻米品质优(达国标2级)、产量较高、生育期适宜等特点,2012年3月通过湖北省品种审定。介绍了该组合的选育经过、主要特征特性、高产栽培及制种技术要点。

Guangliangyou 272 ,derived from the PTGMS line Guangzhan 63-4S and a new restorer line R7272, is a new two-line medium hybrid rice combination developed by the Food Crops Institute of Hubei Academy of Agricul- tural Sciences. It is characteristic of fine grain quality （up to the 2na class of national standards for fine quality rice）, high yield and suitable maturity. It was registered and released for commercial production by the Crop Varie- ty Appraisal Committee of Hubei Province in March, 2012. The breeding procedure, main characteristics and high- yielding techniques of cultivation and seed production of Guangliangyou 272 were introduced in this paper.