银杏种子后熟生理的研究  

Studies on Delayed-Ripening Physiology of Ginkgo Seeds

作　　者：蔡春菊[1] 曹帮华[2] 许景伟[3] 张江圣 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]山东农业大学林学院 [3]山东省林科院 [4]东营市市政局园林管理处

出　　处：《山东林业科技》2002年第6期7-9,共3页Journal of Shandong Forestry Science and Technology

摘　　要：以 4个品种的银杏种子为试材 ,研究了不同时期种胚的生长变化规律 ,结果表明 :银杏为典型的胚后熟种子 ,育苗用种适于 9月 2 0日以后 ,形态完全成熟后采收 ;12月 17日各品种均完成后熟 ;采后先以带皮干藏 3个月 ,然后转入低温 (2℃～ 5℃ )层积 2个月萌发效果最好。Four cultivated varieties of Ginkgo seeds were studied by the morphological traits of embryo.The Ginkgo seeds are typical delayed-ripening seeds,which used for seedlings should be harvested after 20th,Sept.and finished delayed-ripening completely at 17th,Dec.The Ginkgo seeds need a warm stratification period(15～20℃)for about 3 months in order to complete embryo development.And then chilling stratification should treat that seeds(2～5℃)for about 2 months,and therefore the dormancy of Ginkgo seeds can be completely broken down;that means that high germination rate of Ginkgo seeds can be only abstained after so-called two stages of morphological and physiological delayed ripening.

关 键 词：银杏 种子 后熟生理 层积处理 

分 类 号：S792.95[农业科学—林木遗传育种]