铝、镁离子胁迫下决明对百喜草的化感作用  

Allelopathy of Chamaecrista spp on Paspalum notatum under aluminum and magnesium stresses

作　　者：高承芳[1,2] 翁伯琦[1] 王义祥[1] 徐国忠[1] 

机构地区：[1]福建省农业科学院农业生态研究所,福建福州350013 [2]福建省农业科学院畜牧兽医研究所,福建福州350013

出　　处：《草业学报》2009年第5期40-45,共6页Acta Prataculturae Sinica

基　　金：科技部农业成果转化项目(2007GB2C400151);科技部星火计划项目(2007EA720019);福建省农业科学院科技创新团队建设基金(STIF-Y01)资助

摘　　要：本试验探讨了在铝离子和镁离子胁迫条件下,圆叶决明CPI86134、CPI34721和羽叶决明ATF2217、ATF2219对百喜草的化感作用。结果表明,不同浓度的铝离子和镁离子胁迫下,供体圆叶决明和羽叶决明对受体百喜草的影响存在显著差异。圆叶决明CPI86134在3个不同的铝离子和镁离子浓度下对百喜草的种子发芽及幼苗生长均有抑制作用,并且铝离子浓度在0.7 g/L时对百喜草种子发芽及根长抑制作用最明显;而羽叶决明在铝离子浓度为1.1 g/L和镁离子浓度为0.060和0.123 g/L时对百喜草种子发芽及幼苗生长有抑制作用。受体百喜草对供体圆叶决明和羽叶决明的根的化感物质的敏感性强于苗,说明同一植物不同部位对化感物质的敏感性存在差异。The allelopathy of Chamaecrista spp on P. notatum under different aluminum and magnesium stresses was studied. Aluminum and magnesium stresses affected the allelopathy. At three concentrations, C. rotundifolia inhibited the growth of P. notatum. The most significant inhibition effect was when the concentration of aluminum was 0. 7 g/L. C. nictitans inhibited the growth of P. notaturn when the concentration of aluminum was 1.1 g/L and the concentration of magnesium was 0. 060 and 0. 123 g/L. In general, allelopathy was stronger in the roots than in seedlings.

关 键 词：铝离子 镁离子 决明属 百喜草 化感作用 

分 类 号：S541.9[农业科学—作物学]