铺地竹叶片对结球生菜种子发芽及幼苗生长的影响  

Effects of Sasa argenteostriatus Leaves on the Seed Germination,Seedling Growth of Lactuca sativa var.capitata

作　　者：章骏[1] 汤锋[2] 唐俊[1] 

机构地区：[1]安徽农业大学资源与环境学院,合肥230036 [2]国际竹藤网络中心,北京100102

出　　处：《湖北农业科学》2011年第20期4209-4212,共4页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(30871961);国际竹藤网络中心基本科研业务费专项(1632009004)

摘　　要：采用基质盆栽试验,研究了铺地竹(Sasa argenteastriatus E.G.Camus)叶片对结球生菜(Lactucasativa L.var.capitata L.)种子萌发和幼苗生长的影响,结果表明,铺地竹叶片粉末对结球生菜种子的萌发和幼根生长具有一定的抑制作用,随着浓度的增加抑制作用增强,在50～200 g/m2的范围内,幼根抑制率为12.15%～28.91%。在50～100 g/m2的用量下,铺地竹叶片对结球生菜苗长表现为促进生长作用,而在200 g/m2时,则表现为抑制生长作用。施用铺地竹叶片后3 d、6 d、9 d和12 d,结球生菜幼苗的叶绿素含量特别是叶绿素a的含量显著减少,随着基质中叶片粉末浓度的增加,结球生菜叶绿素含量降低,叶绿素a含量高低依次为对照、低浓度处理、中浓度处理、高浓度处理。随着处理后时间的延长,竹叶对结球生菜叶片叶绿素a含量的影响减弱。这个结果进一步验证了自然条件下铺地竹叶片对植物生长的化感效应,说明其具有开发植物源除草剂的潜力,为研究铺地竹叶片中的化感物质提供了佐证。Effects of Sasa argenteastriatus E.G.Camus leaves on the seed germination and seedling growth of Lactuca sativa L.var.capitata L.were determined in substrate culture.These results showed that the inhibition of seed germination and root growth was about 12.15% to 28.91% with the concentration range（50～200 g/m2） of S.argenteostriatus leaves,and the inhibition became stronger as the concentration increased.In addition,S.rgenteostriatus leaves promoted the growth of the seedling with the concentration range of 50～100 g/m2,but the concentration treatment（200 g/m2） had inhibitory effects.On the 3rd,6th,9th and 12th days after added the S.argenteostriatus leaves into substrate,the leaves of S.argenteostriatus could significantly reduce the Chlorophyll content,especially the Chlorophyll a,and it became lower as the concentration of the S.argenteostriatus leaves increased in substrate,but the leaves of S.argenteostriatus had slight effects on Chlorophyll a in the late state.S.argenteostriatus leaves had strong allelopthy to some plant,and S.argenteostriatus leaves might have potential as a botanical herbicide.

关 键 词：铺地竹 结球生菜 化感作用 发芽 幼苗生长 叶绿素 

分 类 号：S795.9[农业科学—林木遗传育种] S636.2[农业科学—林学]