发育和冷层积过程中色木槭种子发芽能力与ABA含量的变化  

Changes in Endogenous Abscisic acid Content and Germination Ability of Acer mono Seeds during Seed Development and Cold Stratification

作　　者：杨玲[1] 沈海龙[1] 张振全[1] 张军保 张鹏[1] 

机构地区：[1]东北林业大学林学院林木遗传育种国家重点实验室,哈尔滨150040 [2]福建省林木种苗总站,福州350003

出　　处：《林业科学》2012年第12期116-121,共6页Scientia Silvae Sinicae

基　　金：黑龙江省科技攻关重大项目课题(GA09B202-06);黑龙江省教育厅科学技术指导项目(11553034);中央高校基本科研业务费专项资金(DL10BA04)

摘　　要：色木槭（Acer mono）又名色树、色木（东北）、五角槭、水色树等,属槭树科（Aceraceae）槭属（Acer）植物,落叶乔木,树高15～20m,胸径可达30cm,自然分布于我国东北、华北与长江流域中下游,朝鲜半岛、蒙古、东西伯利亚、日本亦有分布,为槭属树种中分布最为广泛的种（陈嵘,1937;高风华,2009）。色木槭树势优美,枝叶浓密,叶形秀丽,嫩叶红色,Immature seeds during developmental period and dormant seeds during cold stratification were used to investigate the changes in germination ability and endogenous abscisic acid（ABA） content of Acer mono seeds.The results showed that the seeds of A.mono finished the nutrient accumulation and entered into rapid dehydration stage from 100 d after flowering.Germination ability and endogenous ABA content of A.mono seeds increased with the decrease of the seed moisture content.The seed germination percentage was just 32.7% at 120 d after flowering（fructify stage） but increased to 75.0% after 80 days of cold stratification.The ABA content of A.mono seeds decreased significantly with the prolongation of cold stratification.The present study suggested that the dormancy of A.mono seeds is strongly dependent on the ABA levels.The synthesis of ABA in A.mono seeds decreased and seed germination ability enhanced after cold stratification.

关 键 词：色木槭 脱落酸 种子发育 冷层积 休眠 

分 类 号：S687[农业科学—观赏园艺] Q945.65[农业科学—园艺学]