野生金荞麦种质资源异地繁殖与保护研究  

Study on the Off-site Reproduction and Conservation of Wild Fagopyrum cymosum Germplasm Resources

作　　者：沈伦豪 赖弟利 唐宇 王俊珍 李基光 李伟[2] 严明理 张凯旋 刘丽莉[1] 周美亮 SHEN Lun-hao;LAI Di-li;TANG Yu;WANG Jun-zhen;Li Ji-guang;LI Wei;YAN Ming-li;ZHANG Kai-xuan;LIU Li-li;ZHOU Mei-liang(College of Life Science and Health,Hunan University of Science and Technology,Xiangtan 411201;Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081;College of Food,Sichuan Tourism University,Chengdu 610100;Liangshan Academy of Agricultural Sciences,Sichuan Liangshan,615000;Crops Research Institute of Hunan Province,Changsha 410000)

机构地区：[1]湖南科技大学生命科学与健康学院,湘潭411201 [2]中国农业科学院作物科学研究所,北京100081 [3]四川旅游学院食品学院,成都610100 [4]凉山彝族自治州农业科学研究院,四川凉山615000 [5]湖南省作物研究所,长沙410000

出　　处：《植物遗传资源学报》2023年第3期889-895,共7页Journal of Plant Genetic Resources

基　　金：国家重点研发计划(2021YFD1200100,2021YFD1200105);湖南省科技厅湖湘高层次人才聚集工程项目(2020RC5031)。

摘　　要：野生金荞麦(Fagopyrum cymosum)是野生荞麦资源中分布区域最为广泛和应用价值最大的野生种,具有较高遗传多样性。但受环境及人为因素影响,金荞麦野生资源流失严重,急需开展资源保护工作。本研究以考察搜集的野生金荞麦资源为材料,比较了有性繁殖和无性繁殖对野生金荞麦异地繁殖的差异,探讨了不同地理环境下采用块茎繁殖、枝条扦插繁殖和种子繁殖3种方式对野生金荞麦异地繁殖的影响。结果显示,块茎繁殖相对更好,异地繁殖构成较大群体后利于其异交结实,原生境海拔高度与气候条件与繁殖地的差异对野生金荞麦的萌发及生长繁殖存在影响,昭觉县的地理条件适合开展野生金荞麦异地繁殖。该研究结果对金荞麦的异地繁殖和保护策略的制定具有一定的参考价值。F.cymosum,which is the most widely distributed buckwheat wild resource,represents high genetic diversity in wild population.Due to the environmental changes and human actions that result in the loss of F.cymosum wild resources,it is urgent to protect F.cymosum wild resources.In this study,based on the collected F.cymosum wild resources,we compared the differences between sexual reproduction and asexual reproduction on the off-site reproduction of F.cymosum and discussed the effects of tuber propagation on the offsite propagation of wild buckwheat in different geographical environments.These results showed that the tuber reproduction of F.cymosum was relatively better,and it was conducive to its outcrossing and fruiting after a large population was formed by off-site reproduction.The differences on the altitude of habitat,climate condition and breeding site might cause influence on the germination,growth and reproduction of wild F.cymosum.The geographical conditions and local climate at Zhaojue County of Yunnan province were suitable for the off-site reproduction of F.cymosum.Collectively,these results might provide certain reference for ex situ propagation and conservation of F.cymosum.

关 键 词：野生金荞麦 异地繁殖 保护研究 

分 类 号：S517[农业科学—作物学]