香稻不育系绵香5A的选育与应用

Breeding and Utilization of Aromatic Indica CMS Line Mianxiang 5A

绵香5A是绵阳市农业科学研究所以冈46A为母本、绵5B/(香改B/地谷B//D161B)的F2代优良单株为父本测交,并经多代择优回交转育而成的香稻三系不育系。该不育系育性稳定,农艺性状优良,开花习性好,配合力强,米质较优。于2008年8月通过四川省技术鉴定。所配组合国豪国香12号(绵香5A/绵恢9937)于2006年通过重庆市品种审定。

Mianxiang 5A, a new aromatic indica CMS line, is derived from the testcross between Gang 46A and [ Mian 5 B/（ Xianggai B/Digu B∥D161 B） ] F2 by the successive backcross method and developed by Mianyang Agricultural Research Institute. It showed stable and complete male sterility, good agronomic characters, flowering habits and combining ability, and relatively fine grain quality. In August, 2008, it was technically identified in Sichuan Province, and its hybrid Guohao Guoxiang 12 （Mianxiang 5A/Mianhui 9937 ） was registered and released to commercial production by Chongqing Municipal Crop Variety Appraisal Committee in 2006.