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长粳1A是中国水稻研究所以BT型粳稻不育系151A为细胞质供体,浙粳37/嘉禾212的F4代单株为细胞核供体,经多代回交转育而成的长粒型粳稻三系不育系,2012年通过浙江省农作物品种审定委员会鉴定。长粳1A育性稳定,不育株率为100%,开花习性好,异交结实率中等,配合力较强,高抗稻瘟病,中抗白叶枯病,粒长6.5 mm,长宽比2.7,米质优(达食用粳稻品种品质2级标准),适宜选配优质高产抗病的长粒杂交粳稻组合。
Changjing 1A is a japonica rice with BT type japonica CMS line 151A as a cytoplasm donor in China National Rice Research Institute and a F4 generation of Zhejing 37 / Jiahe 212 as a nuclear donor. The long-grain type japonica rice Three lines of sterile lines, in 2012 through the Zhejiang Provincial Crop Variety Certification Committee identified. Changjing 1A was fertile and stable with 100% sterile plant, good flowering habit, medium outcrossing rate, strong combining ability, high blast resistance and resistance to bacterial leaf blight, grain length 6.5 mm, aspect ratio 2.7, the quality of rice (up to grade 2 of the quality of edible japonica rice varieties) is suitable for the combination of long-grain hybrid japonica rice with high quality, high yield and disease resistance.