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中国农学通报 ›› 2014, Vol. 30 ›› Issue (10): 203-206.doi: 10.11924/j.issn.1000-6850.2013-2283

• 林学 园艺 园林 • 上一篇    下一篇

濒危植物八角莲种子休眠特性的初探

刘燕琴 刘旭 刘杰 任风鸣 李娟   

  • 收稿日期:2013-08-27 修回日期:2013-09-24 出版日期:2014-04-05 发布日期:2014-04-05
  • 基金资助:
    重庆市卫生局中医药科技项目(2011-2-155)。

Seed Dormancy and Germination in Endangered Plant Dysosm a versipellis(Hance ) M. Cheng)

Liu YanQin   

  • Received:2013-08-27 Revised:2013-09-24 Online:2014-04-05 Published:2014-04-05

摘要: 八角莲种子在自然条件下具有休眠期长、萌发不良的生理特性,为了探讨和研究八角莲种子的休眠特性,采用种子吸水性检测、种子切割培养、GA3浸种法、河沙层积处理等方法研究其萌发特性。结果表明:八角莲种子种皮和胚乳制约、种子生理后熟是引起种子休眠的主要原因,用400mg.L-1的GA3溶液浸种24h或6-7℃低温层积均能在一定程度上解除休眠促进萌发,其中以6-7℃低温层积150d效果较好,发芽率和发芽势分别达到88.5%和30.4%。

关键词: 广鹿蛾, 广鹿蛾, 高压汞灯, 趋性指数, 颜色

Abstract: Seed of Dysosm a versipellis has the physiological characteristic of long dormancy and low germination in natural conditions.In o rder to investigate the characteristic of dormancy and find the mechanism of dormancy and the optimal method for breaking the dormancy of D. a versipellis seed,some methods such as isolated embryo cultures,soaking seed in GA3,and cold stratification was utilized.The results showed that seed coat and endosperm restriction, D. a versipellis aterf –ripping were principal reasons which caused dormancy.Soaking the seed in 400 mg.L-1 GA3 solution for 24h or cold stratification for 150d could break the dormancy.The optimal method was the 6-7℃stratification for 150d ,after this treatment,the germination percentage and power reached 88.5% and 30.4% respectively.