利用藤茶提取物二氢杨梅素提高杂交水稻种子活力  

Dihydromyricetin,Extract of Ampelopsis grossedentata,Improves Seed Vigor of Hybrid Rice

作　　者：吴志媛 高家东 蒋珊瑚 周新桥[4] 付华[4] 张友胜[5] 刘爱民 刘军 王建龙[1] WU Zhi-yuan;GAO Jia-dong;JIANG Shan-hu;ZHOU Xin-qiao;FU Hua;ZHANG You-sheng;LIU Ai-mim;LIU Jun;WANG Jian-long(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;Agrobiological Gene Research Center,Guangdong Academy of Agricultural Sciences,Guangzhou,Guangdong 510640,China;Hunan Longping Seed Industry Co.,Ltd.,Changsha,Hunan 410125,China;Rice Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou,Guangdong 510610,China;Institute of Sericulture and Agro-product Processing,Guangdong Academy of Agricultural Sciences,Guangzhou,Guangdong 510640,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]广东省农业科学院农业生物基因研究中心,广东广州510640 [3]湖南隆平种业有限公司,湖南长沙410125 [4]广东省农业科学院水稻研究所,广东广州510610 [5]广东省农业科学院蚕业与农产品加工研究所,广东广州510640

出　　处：《杂交水稻》2022年第4期30-36,共7页Hybrid Rice

基　　金：国家自然科学基金(31871716);广东省科技计划项目(2020B121201008,2020B0202090003);广州市科技计划项目(201807010114);广东省农业科学院学科团队项目(202132TD)。

摘　　要：开展了藤茶提取物中的活性成分二氢杨梅素提高水稻种子发芽率和活力效果的研究。与未经处理的对照相比,单独的天然产物二氢杨梅素作为渗透调节剂,能显著提高各供试种子的发芽率,其效果与聚乙二醇(PEG)相当。渗透调节处理的种子回干,贮藏2个月后发芽率与贮藏前无显著差异。此外,利用二氢杨梅素为主要成分配制的种子活力激活剂,可以有效提升劣变杂交水稻种子的发芽率。用二氢杨梅素等配制的种子活力调控剂在杂交水稻制种授粉完成时开始喷施,10 d后试验各处理的种子发芽率均超过86%,显著高于对照,且种子发霉率减少。本研究确定了一种天然、环境友好、效果显著的可提升水稻种子活力主要物质成分二氢杨梅素。The effects of the active constituent dihydromyricetin in the extract of Ampelopsis grossedentata were studied on improving germination percentage and vigor of rice seeds.Compared with the control,dihydromyricetin,a natural product extracted from Ampelopsis grossedentata,as an osmotic regulator,significantly improved the seed germination rate of all tested hybrid rice varieties with its effect close to that of polyethylene glycol(PEG).After dihydromyricetin treatment,the seed had no significant difference in seed germination rate within two months of storage.Furthermore,the seed vigor activators prepared with dihydromyricetin effectively improved the germination percentage of deteriorated hybrid rice seed.When the seed vigor regulators prepared with dihydromyricetin were sprayed at the completion of pollination in hybrid rice seed production,ten days later,the germination percentage of the treatments was as high as 86%,significantly higher than that of the control,and the moldy seed percentage was reduced.In this study,dihydromyricetin,a principal natural,environment-friendly and effective substance composition,has been identified to raise rice seed vitality.

关 键 词：水稻种子 活力 发芽 二氢杨梅素 

分 类 号：S511.01[农业科学—作物学] S311