优质早籼三系不育系H28A的选育与利用

Breeding and Utilization of Good Quality and Early Cropping Indica CMS Line H28A

以金 2 3A为母本 ,岳 4B/福伊B∥ 3 1 6B的F3代单株为父本测交 ,经多代择优回交与选择 ,育成野败型早籼三系不育系H2 8A。该不育系具有不育性稳定、株叶形态好、早熟、开花习性好、柱头外露率和异交结实率高、米质较优、可恢复性和配合力好等优良特性。 2 0 0 3年 7月通过现场评议 ,2 0 0 4年 2月通过湖南省审定。用H2 8A与多个恢复系配组 ,杂种表现产量高、米质优、稳产性好、适种范围广 ,其中H2 8A×R2 0 7于 2 0 0 4年 2月通过广西审定 ;H2 8A× 91 -1

H28A is a new WA-type early cropping indica CMS line in rice, which is developed by crossing Jin 23A to a selected F 3 plant of Yue 4B/Fuyi B∥316B through successive selection and backcrossing. It is characteristic of stable and complete male sterility, good plant type, early maturity, good flowering habits, high stigma exsertion rate and outcrossing rate, relatively good grain quality and good combining ability. In February, 2004, it was certified by Hunan Crop Variety Release Committee. Its F 1 hybrids show high and stable yield, good grain quality and wide adaptability. Among them, H28A/R207 was certified in Guangxi in February, 2004; H28A/91-13 was evaluated and ranked as a third class fine quality rice variety in Hunan Province in 2002.