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金汇A是用武9522(武运粳7号)经60Coγ射线诱变获得的带淡黄叶隐性标记的M4代优良单株为父本,与寒丰A测交和连续回交转育而成的具淡黄叶标记的粳稻不育系,具有农艺性状优良、米质优、抗病性较强、开花习性好、异交结实率较高、花粉败育彻底、配合力好等特性,其叶色标记对解决杂交制种中BT型细胞质雄性不育系易受环境影响自交结实而引起的种子纯度不高的问题具有积极意义。金汇A于2010年9月通过上海市技术鉴定,所配组合金汇优50(金汇A/交恢50)于2012年通过上海市品种审定。
Jinhui A was the M4 generation excellent single plant with yellowish yellow leaf recessive marker obtained by mutagenesis of 60Coγ-ray with Wu 9522 (Wuyunjing 7), which was crossed with Hanfeng A and crossed back continuously The japonica CMS lines with yellow leaf marker had the characteristics of excellent agronomic traits, high quality rice, high disease resistance, good flowering habits, high outcrossing rate, thorough pollination of pollen, good combining ability and the like, The color marker is of positive significance to solve the problem that the BT type cytoplasmic male sterile line in hybrid seed production is susceptible to self-fertility and low seed purity. Jinhui A passed the technical appraisal of Shanghai Municipality in September 2010 and the combination of Jinhui 50 (Jinhui A / Jiahui 50) was approved by Shanghai Municipality in 2012.