首页|糙隐子草水浸液对3种常见草原植物种子萌发的影响

糙隐子草水浸液对3种常见草原植物种子萌发的影响

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为探知糙隐子草(Cleistogenes squarrosa)地上部分浸提液对冰草(Agropyroncristatum)、早熟禾(Poa annua)和大针茅(Stipa grandis)种子萌发的影响.采用室内培养皿法以典型草原植物糙隐子草为供体植物,在5种不同浸提液浓度下,对受体种子的萌发进行测定.结果表明:不同浓度糙隐子草水浸提液(0.5～50 g·L-1)对冰草、早熟禾和大针茅种子萌发均有不同程度的影响,抑制作用随着浓度的升高逐渐加强.当浓度达到50 g·L-1时,3种植物的发芽率、发芽指数与对照组之间均差异显著,早熟禾为极显著.其中早熟禾还表现为低浓度下促进,高浓度下抑制作用.当浓度达到50 g·L-1时,糙隐子草水浸液对冰草、早熟禾的抑制影响均大于大针茅.
Effects of Cleistogenes Squarrosa Aqueous Extracts on the Seed Germination of 3 Common Plant Species in Grassland
The allelopathic effects of Cleistogenes squarrosa on the seed germinations of Agropyron cristaturn,Poa annua and Stipa grandis were investigated using indoor petri dish bioassays.The results showed that different mass concentrations(0.5,5,10,20 and 50 g · L-1) had different effects on the tested plants.And the effects were inhibitory when the concentration of extract increased.Compared with the control,the extracts of 50 g · L-1 significantly inhibited the germination rates and germination indexes of P.annua (P＜0.01),A.cristatum (P＜0.05) and S.grandis (P＜0.05).The aqueous extract promoted the germination rate of P.annua at lower concentrations and inhibited the germination rate at higher concentrations.When the concentration reached 50 g · L-1,the response indexes of A.cristatum and P.annua were greater than S.grandis.

Aqueous extractCleistogenes squarrosaSeed germinationInhibition

宋文娟、张昊、刘果厚

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内蒙古农业大学生态环境学院,内蒙古呼和浩特010019

水浸提液 糙隐子草 种子萌发 抑制作用

国家自然科学基金

30860056

2014

10.11733/j.issn.1007-0435.2014.06.020

草地学报
中国草学会

草地学报

CSTPCDCSCD北大核心
影响因子：1.156
ISSN：1007-0435
年,卷(期)：2014.22(6)
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