打破苔草种子休眠方法的研究  

SOME METHODS FOR STIMULATING GERMINATION OF CAREX SEEDS

作　　者：房丽宁[1] 李青丰[1] 李淑君 徐军 

机构地区：[1]内蒙古农牧学院草原系

出　　处：《草业科学》1998年第5期39-43,共5页Pratacultural Science

摘　　要：针对苔草种子萌发困难限制该种植物广泛利用的问题，研究了机械处理、层积处理以及不同浓度的酸、碱及丙酮、激素处理对我国北方两种常见苔草——异穗苔草和砾苔草萌发的影响，并确定了这两种苔草种子萌发适宜的光、温条件。结果表明，用１０％或２０％的氢氧化钠浸种４～１０ｈ，异穗苔草种子的发芽率提高到９０％以上；而用９８％浓硫酸浸种２０～３０ｍｉｎ，异穗苔草和砾苔草的发芽率都达到了８８％。低温层积６个月以上，对促进苔草种子的萌发也有显著的作用，而且苔草种子萌发需２０℃以上的温度，光照对两种苔草的萌发没有影响。In order to solve the problem of difficult germination of Carex seeds,the seeds of Carex heterostachya and C.stenophylloides were treated with mechanical methods,depositing under damp and low temperature conditions,and chemically by a variety of agents.It was shown that dipping the seeds in a NaOH solution of 10% or 20% concentration for 4～10 hours could increase the rate of germination up to 90% or above;dipping in H 2SO 4 of 98% concentration for 20～30 minutes would make a rate of 88%;low temperature depositing for 6 months or longer also had a significant effect on germination.In all the above cases a temperature of 20 ℃ or above was necessary for germination.No significant effect of light on germination was observed.

关 键 词：异穗苔草 砾苔草 种子休眠 种子萌发 苔草 

分 类 号：S54[农业科学—作物学] S812.4