王海波;王帅;王孝娣;史祥宾;王宝亮;郑晓翠;王志强;冀晓昊;刘凤之;

• 1:中国农业科学院果树研究所·农业部园艺作物种质资源利用重点实验室

摘要(Abstract)：

【目的】明确6-BA及氨基酸硒在激素水平上对葡萄叶片衰老的调控,为设施葡萄叶片衰老延缓技术的建立提供理论依据。【方法】在设施葡萄延迟栽培条件下,以叶片衰老速度不同的‘意大利’和‘无核白鸡心’2个葡萄品种为试材,分别进行叶面喷施6-BA和氨基酸硒处理,以清水为对照,测定不同处理和对照叶片衰老期间功能叶片的叶绿素含量和净光合速率(Pn)及内源激素含量与比值的变化。【结果】外源6-BA和氨基酸硒处理显著延缓了叶片叶绿素含量和净光合速率的下降,明显提高了玉米素核苷(ZR)和赤霉素(GA3)含量和ZR/ABA(脱落酸)、GA3/ABA、(ZR+GA3)/ABA比值,显著降低了ABA含量。生长素(IAA)具有前期保持叶片生长发育和后期促进衰老的双重作用。2个葡萄品种间比较,‘意大利’叶片衰老缓慢。【结论】6-BA和氨基酸硒通过维持较高的GA3/ABA、ZR/ABA和(GA3+ZR)/ABA比值,提高了葡萄叶片的叶绿素含量和净光合速率,延长了功能期,因此,外源喷施6-BA和氨基酸硒是延缓葡萄叶片衰老的重要技术措施。

关键词(KeyWords)： 葡萄;叶片衰老;6-BA;氨基酸硒;内源激素

Abstract:

Keywords:

基金项目(Foundation): 中国农业科学院科技创新工程(CAAS-ASTIP-2015-RIP-04);; 国家现代农业产业技术体系建设专项(nycytx-30-zp);; 948重点项目“鲜食葡萄新品种及设施化生产技术引进与创新应用”(2011-G28)

作者(Author): 王海波;王帅;王孝娣;史祥宾;王宝亮;郑晓翠;王志强;冀晓昊;刘凤之;

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DOI:

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