五种禾本科植物种子萌发特性研究  

Study on Seed Germination Characteristics of Five Gramineae Plants

作　　者：孙琦[1] 李成俊[1] 王琴[1] 孙海龙[2] 龙凤[1] 

机构地区：[1]四川大学生命科学学院,四川成都610064 [2]四川大学河流与水资源开发国家重点实验室,四川成都610065

出　　处：《北方园艺》2013年第20期52-55,共4页Northern Horticulture

基　　金：国家"十二五"科技支撑计划资助项目(2011BAK12B04)

摘　　要：以边坡绿化中常用的老芒麦、早熟禾、无芒雀麦、狗尾草、黑麦草5种禾本科植物种子为试材，在实验室条件下，研究测定了5种植物种子萌发特性。结果表明：黑麦草和早熟禾发芽率超过80％，老芒麦发芽率不足30％；黑麦草第1天开始发芽并在5d完成萌发过程；狗尾草、无芒雀麦与老芒麦在1～3d内开始萌发，早熟禾在第5天开始萌发；将种子萌发率与千粒重相联系，种子大小与中生植物的发芽率有相关性；植物种子萌发速率与种源地的气候及植物的生态型有关；掩埋深度与病茵感染都可能造成无芒雀麦萌发过程中出现的异常现象。该研究结果对边坡绿化的植物种子选择以及萌发管理具有较好的指导意义。Taking Elymus sibiricus , Poa ann ua, Brornus inermis , Setaria viridis , Loliurn perenne grass seeds which were frequently used in slope greening as materials, the germination characteristics of five gramineae plants were studied. The results showed that the germination rate of Lolium perenne and Poa annua exceeded 80% ,while the figure of Elymus sibiricus was less than 30%. The seed which began to germinate at the first day was Lolium perenne. Moreover, it had completed its all germination process within 5 days. During the first three days, Setaria viridis, Bromus inermis and Elymus sibiricus began to germinate. Poa annua began to germinate at the 5th day. It was indicated that the germination rate was correlated with thousand kernel weight;the seed size had a correlation with the germinate rate of mesads. The germination rates relate to provenance climate as well as the ecotypes of different plants. As for the abnormal phenomena appeared in the germination process of Bromus inermis, sand burial and the invasion of germs were likely to impact respectively. This research bad a guide significance to plant selection on slope greening and management of seed germination.

关 键 词：生态型 发芽率 禾草 千粒重 

分 类 号：S688[农业科学—观赏园艺]