摘要
空育131本身携带Pik和Pia 2个稻瘟病抗性基因,但目前该品种在黑龙江省的生产上表现为对稻瘟病的抗性差、抗谱窄,且稻米品质不具有香味,需要定向改良。运用基因聚合与传统杂交相结合的方法将香味基因Osbadh2(fgr)和稻瘟病抗性基因Pi1、Pi2、Pi9聚合于空育131中,以实现对空育131香味特征和稻瘟病抗性的遗传改良。最终,得到了3种双基因聚合的组合Pi1+fgr、Pi2+fgr和Pi9+fgr,后代植株对稻瘟病均有较强抗性,稻米具有香味品质,为进一步改良空育131品种奠定了基础。
Despite having Pik and Pia rice blast resistance genes,Kongyu 131 nonetheless lost its blast resistance in production under the current rice farming practises in Heilongjiang province.There is also an urgent need for focused improvement because the existing elite variety lacks scent,one of its advantageous traits.Genetic enhancement is therefore necessary to strengthen blast resistance and introduce the fragrance gene.In order to obtain the outcomes of genetic improvement of aroma characteristics and rice blast resistance in Kongyu 131,we now reported the introduction of fragrance gene Osbadh2(fgr)and blast resistance genes,Pi1,Pi2,and Pi9,into Kongyu 131.We have obtained three kinds of two-gene combinations(Pi1+fgr,Pi2+fgr and Pi9+fgr)showing strong resistance to rice blast,together with rice aroma quality providing foundation for Kongyu 131 further improvement.
作者
李瑞琪
毕浩然
姜恭好
段海燕
Li Ruiqi;Bi Haoran;Jiang Gonghao;Duan Haiyan(College of Modern Agriculture and Ecological Environment,Heilongjiang University,Harbin 150080,Heilongjiang,China;College of Life Sciences,Heilongjiang University,Harbin 150080,Heilongjiang,China)
出处
《作物杂志》
北大核心
2022年第5期22-26,共5页
Crops
基金
黑龙江大学与企业合作横向项目(20043分析)
黑龙江大学与华中农业大学合作横向项目(19037田间)。
