光皮桦种子千粒重、寿命及生命力研究

编号 zgly0000303432

文献类型 期刊论文

文献题名 光皮桦种子千粒重、寿命及生命力研究

学科分类 220.99;林学其他学科

作者 祝小科  朱守谦 

作者单位 贵州大学林学系 

母体文献 林业科学 

年卷期 2003,39(4)

页码 168-172

年份 2003 

分类号 S792.15 

关键词 光皮桦  种子  千粒重  种子寿命  生命力  生殖生态  质量 

文摘内容 The thousand-seed weight, germination rate and vitality of seeds for Betula luminifera were studied. The results showed that the thousand-seed weight was different in various habitats, and varied with the age and the part of crown and fruit. The seed had a longevity of 32—37 days in general and with a characteristic of the rapid germination. The seed had a high germination rate during the early stage or perk stage of seed dispersal, and a lower germination rate during the end stage. The germination rate and vitality of mature seed reduced with the increase of the storing time, the change in seed ger-mination was significantly different at the various ages and habitats。