梓叶槭种子生物学特性研究  

Research on the Biological Characters of the Seeds of Acer catalpifolium Rehd.

作　　者：余道平[1,2] 彭启新[1,2] 李策宏 谢孔平 张国珍[1,2] 李世丽[1,2] 

机构地区：[1]四川省自然资源科学研究院,四川成都610041 [2]峨眉山生物资源实验站,四川峨眉山614201

出　　处：《中国野生植物资源》2008年第6期30-32,64,共4页Chinese Wild Plant Resources

基　　金：四川省科技基础条件平台项目-四川省野生植物种质资源库建设项目;四川省科技攻关计划项目--四川省珍稀濒危植物收集保存及繁育研究项目(05SG023-11)资助

摘　　要：对两个不同种源地的梓叶槭（Acer catalpifolium Rehd.）种子进行了形态结构特性和萌发特性研究,结果表明,梓叶槭种子呈压扁状椭圆形,为无胚乳种子。都江堰种源地的种子千粒重为（28.4±0.81）g,显著大于峨眉山种源地（18.5±0.39）g。种子吸水过程分3个明显阶段：0-1 h是急剧吸水的过程,1-12h吸水较缓慢,12-96h吸水量又急增。温度对2个种源地的种子萌发率有显著影响,25℃是其种子萌发的适宜温度,萌发率分别为48.7%±3.06%（都江堰种源）、42%±2.00%（峨眉山种源）,在光照和黑暗条件下,种子萌发率没有显著差异,种子均能正常萌发。Morphosis and germination characters of Acer catalpifolium Rehd. seeds from two localities were studied. They showed that seeds were flaser and oval ,while the inside has not endosperm. The 1000 - seed weight（28.4 ± 0. 81 ） g of Dujiangyan provenances was significantly higher than that of Emeishan provenances（ 18. 5 ±0. 39 ）g. The water absorption of seeds showed three obvious stages： the rapid absorption stage in 0 - 1 hours ,the slow stage in 1 - 12 hours and the faster absorption stage from 12 -96 hours. Temperature had significant effect on the germination percentage. The suitable temperation was 25 ℃, respectively with 48. 7% ±3.06% （ Dujiangyan provenances）, 42% ±2. 00% （ Emeishan provenances）. No difference for genermination percentage existed in darkness and light,in which seed could normally germinate.

关 键 词：梓叶槭 种子萌发 生物学特性 

分 类 号：Q945.35[生物学—植物学]