优质籼型三系香稻不育系六香A的选育及应用

Breeding and Application of Aromatic Indica CMS Line Liuxiang A with Good Grain Quality in Rice

籼型优质三系香稻不育系六香A是广西大学与南宁市西玉农作物研究所合作育成,于2020年9月通过广西壮族自治区农作物品种审定委员会办公室组织的专家技术鉴定。该不育系是以优质香稻保持系香占B与优质保持系回交材料(满香B///满香B//满香B/DP15)杂交制保,从F3代开始以满香A为不育胞质供体进行测交和连续回交育成的优质三系香稻不育系。该不育系米质达部标1级,具有香味浓郁、配合力强、综合抗性良好、植株较矮、株叶形好、分蘖力强、异交结实高等特点,组配的杂交香稻组合六香优锦丝占(六香A/香桂R217)丰产性良好,米质达部标1级,于2021年通过广西壮族自治区农作物品种审定委员会审定。

Liuxiang A, an aromatic indica CMS line with good grain quality in rice, was co-developed by Guangxi University and Nanning Xiyu Crop Research Institute. It was technically identified by Guangxi Zhuang Autonomous Region in September, 2020. Liuxiang A was developed by crossing Manxiang A to the selected F3 plants from the cross of Xiangzhan B////Manxiang B///Manxiang B//Manxiang B/DP15 and followed by successive backcrosses. It is characteristic of deep fragrance, fine grain quality(reaching the first class of high-quality rice standards issued by the Ministry of Agriculture), high combining ability, relatively strong multiple resistance, good plant type, strong tillering ability and high outcrossing rate. Its aromatic F1 hybrid Liuxiangyou Jinsizhan(Liuxiang A/Xianggui 217), showing high-yielding ability and reaching the first class of high-quality rice standards issued by the Ministry of Agriculture, was approved for release to commercial production in Guangxi in 2021.