京贵占是北京金色农华种业科技股份有限公司利用抗稻瘟病优质骨干亲本华占为母本、优质恢复系粤农丝苗为父本杂交,经过4 a 8代选育出的优质、长粒、抗稻瘟病、高配合力恢复系,并于2018年获得植物新品种授权.以其为父本配制的华盛优京贵占、桃优京贵占和桔两优京贵占等8个组合13次通过国审或省审,在不同稻区审定的组合稻米品质综合评级均在部颁3级及以上.
Breeding and Application of Rice Restorer Line Jingguizhan with Fine Grain Quality and High Combining Ability
Jingguizhan,derived from the cross between blast-resistant backbone parent Huazhan as the female and high-quality restorer line Yuenongsimiao as the male,is a restorer line with fine grain quality,long grain,rice blast resistance and high combining ability developed by Beijing Kings Nower Seed Science and Technology Co.,Ltd.through pedigree selection method after eight generations over four years,and was authorized as a new plant variety in 2018.There have been eight hybrid combinations derived from Jingguizhan including Huashengyou Jingguizhan,Taoyou Jingguizhan and Juliangyou Jingguizhan passed the national or provincial examination 13 times for commercial production.The comprehensive ratings of grain quality of these combinations approved in different rice regions were all at or above the ministerial standard level 3.
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