长芒草种子适宜萌发条件  

A study of optimum germination conditions of Stipa bungeana seeds

作　　者：周芝琴[1] 李廷山[1] 武艳培[1] 胡小文[1] 

机构地区：[1]草地农业生态系统国家重点实验室兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业科学》2013年第2期218-222,共5页Pratacultural Science

基　　金：国家科技计划(2011BAD17B02);中央高校科研基本业务费(lzujbky-2012-183)

摘　　要：研究了不同光照、温度以及二者之间的互作对长芒草(Stipa bungeana)种子萌发与幼苗生长的影响,结果表明,1)长芒草种子在10～30℃温度范围内均能萌发,萌发最适温度为20℃,在光照与黑暗条件下的萌发率分别为72%与88%;2)光照显著抑制长芒草种子的萌发,且相比适宜温度条件下,光照对亚适宜温度下种子的萌发具有更强的抑制作用。Present study investigated the effect of light,temperature and their interaction on the seed germination of Stipa bungeana.The results showed that 1） S.bungeana seeds germinated within a wide range temperature from 10 ℃ to 30 ℃,with 20 ℃ as the optimal temperature,in which seed germination rates were 72% and 88% in the presence of light and absence of light,respectively;2） Light significantly depressed seed germination of S.bungeana whatever the temperatures subjected to,moreover,seed germination was depressed strongly under sub-optimal temperature compared to the optimal one.

关 键 词：长芒草 发芽率 发芽指数 光照 温度 

分 类 号：S543.9[农业科学—作物学]