作　　者： ; ; ; ;

机构地区： 河北大学生命科学学院

出　　处： 《种子》 2012年第11期1-3,8,共4页

摘　　要： 采用培养皿滤纸法,以蒸馏水(A:0 mg/mL)作对照,研究了天然草地中3种不同浓度(B:16.2 mg/mL;C:32.3 mg/mL;D:64.6 mg/mL)的羊草凋落物对药用植物柴胡和防风萌发期的化感作用。结果表明,羊草草地凋落物水浸提液对种子萌发没有显著的影响;不同浓度的羊草草地凋落物水浸提液对柴胡和防风胚芽生长的促进或抑制作用不显著,但对其胚根生长有显著(p<0.05)的抑制或促进作用,对其鲜重和干重的作用与对照相比,只有D浓度表现为抑制。 In order to research the allelopathy of Leymus chinensis grassland litter on medicinal plants of S. divaricata and B. chinense, three kinds of different level of L. chinensis＇ s aqueous （ B ： 16.2 mg/mL; C ： 32.3 mg/mL;D ：64.6 mg/mL）was used, comparing with distilled water（ A）, their effect on seed germination and seedling growth of S. divaricata and B. chinense was investigated with the method of bioassay. The results showed that aqueous extracts had no significant effects on the seed germination. Different concentrations of aqueous extracts had significant effects on early seedling growth, especially on root growth of S. divaricata and B. chinense. The results showed that aqueous extracts had no significant effects on embryo, though the allelopa- thy of aqueous extracts from the litter of L. chinensis grassland on the embryo of B. chinense was promoted, but on the embryo of S. divaricata was inhibited. Aqueous extracts had significant effects on root growth （p 〈 0.05 ） of S. divaricata and B. chinense. Compared with the control, the results had shown inhibition on seedling weight when the aqueous extracts concentration was D.

关 键 词： 凋落物 羊草 防风 柴胡 化感作用

领　　域： [生物学]