甘蓝型油菜矮秆突变体M6的应用潜力分析  

Application potential analysis of dwarf mutant M6 in Brassica napus L.

作　　者：黄国微 谭莹莹 关志林 杨春慧 闫铭 操雄豪 付瑞 刘克德[1,2] HUANG Guo-wei;TAN Ying-ying;GUAN Zhi-lin;Yang Chun-hui;YAN Ming;CAO Xiong-hao;FU Rui;LIU Ke-de(National Key Laboratory of Crop Genetic Improvement,Huazhong Agricultural University,Wuhan 430070,China;Hubei Hongshan Laboratory,Wuhan 430070,China)

机构地区：[1]华中农业大学作物遗传改良全国重点实验室,湖北洪山实验室,湖北武汉430070 [2]湖北洪山实验室,湖北武汉430070

出　　处：《中国油料作物学报》2024年第5期1008-1016,共9页Chinese Journal of Oil Crop Sciences

基　　金：国家重点研发计划项目(2022YFD1200400);国家自然科学基金联合基金(U22A20477);洪山实验室项目(2021HSZDO04)。

摘　　要：降低株高可显著提高甘蓝型油菜的抗倒伏能力,增加种植密度,提高产量和收获指数。M6是一个不完全显性矮秆突变体,成熟期株高71 cm左右,株型紧凑。为探讨M6在杂交种中的利用价值,将M6分别与阳光2009、华双5号、华128、华919、浙油7、中双11等6个甘蓝型油菜品种杂交获得杂种F_(1)。与野生型油菜品种相比,杂种F_(1)株高、第一分枝高度、节间长度和分枝角度均显著降低;部分杂交种的主花序长度无显著变化,部分杂交种的主花序长度显著降低;根颈粗显著增加;除个别杂交种外,其余的有效分枝数、主花序有效角果数、单株角果数、单株产量均显著增加。表明M6所配制的杂种表现为半矮、紧凑株型,具有很强的产量优势,是一个优良的矮秆基因资源,在油菜矮化育种中具有潜在的应用价值。Reducing plant height could significantly improve lodging resistance,increase planting density,and increase yield and harvest index of Brassica napus L.M6 is a semi-dominant dwarf mutant with plant height of 71cm at maturity and compact plant architecture.In order to explore the utilization value of M6 in hybrid produc-tion,F_(1) hybrids were generated by crossing six rapeseed cultivars(Yangguang 2009,Huashuang 5,Hua 128,Hua 919,Zheyou 7 and Zhongshuang 11)with the M6 mutant.Compared to the six wild-type rapeseed varieties,the plant height,the first primary branch height,the internode length and the branch angle of the F_(1) hybrids are signifi-cantly reduced.The length of main inflorescence of some hybrids did not change significantly,while the length of main inflorescence of some hybrids decreased significantly.The root crown diameter in the F_(1) hybrids are signifi-cantly increased compared to their corresponding of the wild-type parents.The effective branch numbers,the num-bers of effective siliques on the main inflorescence,the silique number per plant and the yield per plant of most F_(1) hybrids increased significantly.These results demonstrated that the F_(1) hybrids produced between M6 and wild-type tall varieties are of semi-dwarf statures and compact plant architecture,and have strong heterosis of seed yield,indi-cating that M6 is an elite dwarf gene resource and has great potential value in the semi-dwarf rapeseed hybrid breeding programs.

关 键 词：甘蓝型油菜 株型 矮秆突变体 产量 杂种优势 

分 类 号：S565.4[农业科学—作物学]