籼型三系不育系林丰A的选育

Breeding of Indica CMS Line Linfeng A

为了给籼型三系杂交稻新品种选育提供优良亲本,以广东省农业科学院水稻研究所选育的保持系荣丰B为材料用Co60-γ射线辐射,系选后与中国水稻研究所选育的优质香型保持系中浙B进行杂交转育而成籼型三系不育系林丰A。该不育系株型适中,叶片挺直,叶色浓绿,茎秆粗壮,根系较发达,长势繁茂,稃尖紫色,分蘖力强,粒长形,中抗稻瘟病,于2012年7月1日通过江西省农作物品种审定委员会技术鉴定,其不育性稳定,米质香味好,配组的组合具有早熟、高产等特点。

In order to provide excellent parents for breeding of new indiea CMS line rice varieties, maintainer line Rongfeng B （bred by rice institute of GAAS） radiated by C060-γ ray was crossed by Zhongzhe B（an excellent aroma maintainer line bred by China National Rice Research Institute） to obtain indica CMS line Linfeng A. Linfeng A was of moderate plant type, straight and upright leaves, dark green leaf color, stocky stem, well-developed root system, luxuriant growth vigor, purple shell tip, powerful tillering ability, microscler grain, moderate resistance to rice blast. Lingfeng A was approved by Jiangxi Approval Committee of Crop Variety on July 1, 2012. Linfeng A has stable sterility, good rice flavor and its hybrid combination showed characteristics of early maturity and high yield.