人工干燥和冷层积过程中的花楸树种子中内源激素含量变化  

Changes in Endogenous Hormone Content in Seeds of Sorbus pohuashanensis (Hance) Hedl. during Artificial Drying and Cold Stratification

作　　者：杨玲[1] 沈海龙[1] 梁立东[1] 刘春苹[1] 

机构地区：[1]东北林业大学林学院,林木遗传育种与生物技术教育部重点实验室,哈尔滨150040

出　　处：《植物生理学通讯》2008年第4期682-688,共7页Plant Physiology Communications

基　　金：国家"十一五"科技支撑项目子课题(2006BAD03A0405)

摘　　要：用高效液相色谱技术检测人工干燥和冷层积中花楸树种子中内源激素含量和平衡变化的结果表明:在人工干燥过程中种皮和胚内的GA3/ABA比值显著增高;2～5℃冷层积过程中的种皮内ABA含量显著下降,种皮和胚内各种促进生长类物质的相对含量(尤其是GA3/ABA比值)明显增加。Endogenous hormone content and ratio in mature seeds of Sorbus pohuashanensis during artificial drying and cold stratification were measured by high performance liquid chromatography （HPLC） technique. The results showed that the GA3/ABA ratio in seed coat and embryo increased significantly after artificial drying, the ABA content in seed coat decreased significantly during 2-5 ℃ cold stratification, and the relative content of growth promotion substances （especially GA3/ABA ratio） in seed coat and embryo increased evidently.

关 键 词：花楸树 种子休眠 冷层积 内源激素 

分 类 号：S792.25[农业科学—林木遗传育种] Q945[农业科学—林学]