【摘要】 先丰A是洪江先丰种业有限公司以优ⅠB与49B杂交F3代优良单株为父本,与优IA测交和连续回交转育而成的籼型三系不育系,于2007年5月通过广西壮族自治区审定。该不育系具有米质较优、抗性较好、败育彻底、开花早而集中、异交结实率高、配合力强等特性。用先丰A配组选育的杂交稻组合先丰优034和先丰优933于2009年3月通过湖南省品种审定。更多还原

【Abstract】 Xianfeng A,developed by crossing You ⅠA to a selected F3 plant of You ⅠB /49 B through successive selection and backcrossing over years by Hunan Hongjiang Xianfeng Seed Co. Ltd.,is a new indica CMS line in rice. It was certified by Guangxi Provincial Crop Variety Appraisal Committee in May,2007. It shows the characteristics of complete male sterility,good grain quality,good lodging and disease resistance,high outcrossing rate with good flowering habits and high combining ability. In March,2009,its hybrid combinations Xianfengyou 034 and Xianfengyou 933 were registered and released to commercial production by Hunan Provincial Crop Variety Appraisal Committee.更多还原