干旱对草地早熟禾种子萌发的影响  

The influence of drought on seeds' germination ability of Poa pratensis cultivars

作　　者：冯淑华[1] 陈雅君[1] 

机构地区：[1]黑龙江农业工程职业学院,150088

出　　处：《草原与草坪》2006年第1期70-71,共2页Grassland and Turf

摘　　要：用不同浓度聚乙二醇(PEG)溶液模拟干旱协迫环境,研究了9个草地早熟禾品种在干旱条件下种子的萌发情况,结果表明,低浓度PEG(0.025 mg/mL)可促进草地早熟禾种子萌发,当PEG浓度达到0.050mg/gL时,对种子的萌发产生了抑制作用,且随浓度的继续增加,抑制作用逐渐加强,不同品种间的受抑制程度表现出明显差异。Using PEG solution of different concentrations to simulate drought,germination ability of 9 Poa pratensis cultivars in drought condition were studied. The results demonstrated that low concentration of PEG （0. 025 mg/mL） could promote seeds＇ germination of Poa pratensis culticars. When concentration reached 0.05 mg/mL,germination of Poa pratensls cultivars was restrained,and with the increasing of concentration, restraining function increased. Restraining functions among different cultivars were significantly different.

关 键 词：草地早熟禾 干旱 聚乙二醇 种子萌发 

分 类 号：S688.4[农业科学—观赏园艺]