Synthetic apomixis with normal hybrid rice seed production  

作　　者：Xin Wei Chaolei Liu Xi Chen Hongwei Lu Jian Wang Shenlin Yang Kejian Wang 

机构地区：[1]State Key Laboratory of Rice Biology,China National Rice Research Institute,Hangzhou 310006,China [2]Hainan Yazhou Bay Seed Laboratory,Sanya 572025,China

出　　处：《Molecular Plant》2023年第3期489-492,共4页分子植物（英文版）

基　　金：supported by the National Natural Science Foundation of China(32188102,32025028,and U20A2030);the National Key Research and Development Program of China(2022YFF1003304);the Central Public-interest Scientific Institution Basal Research Fund(Y2022QC20);the Hainan Yazhou Bay Seed Laboratory(B21HJ0215).

摘　　要：Heterosis has long been exploited in the hybrid seed industry,which contributes to high and stable yields of modern agriculture(Huang et al.,2016).However,heterosis phenotypes of hybrid plants are segregated in its offspring.Apomixis allows instant fixation and propagation though seeds with heterozygous genotypes,showing great potential in plant breeding and agricultural practice(Ye and Cui,2019).Apomixis naturally occurs in hundreds of plant species,but it is absent in major crop species(Underwood and Mercier,2022).Recently,synthetic apomixis has been engineered in rice by combining Mitosis instead of Meiosis(MiMe)with a mutation of MATRILINEAL or ectopic expression of BABY BOOM1(BBM1),enabling clonal reproduction of F1 hybrids through seeds and stable transmission of heterotic phenotypes over generations(Khanday et al.,2019;Wang et al.,2019;Liu et al.,2022).However,the fertility of both two strategies was significantly reduced compared with that of the wild type,which hinders the application of both strategies in agriculture.In this study,we established synthetic apomixis with a high fertility that is almost comparable to normal hybrid rice.

关 键 词：FERTILITY BREEDING hundreds 

分 类 号：S511[农业科学—作物学]