摘要
为了探讨中草药党参和黄芪根际土壤水浸液对玉米的化感作用,采用生物测定方法,研究了中草药党参和黄芪根际土壤水浸液0.5、0.25、0.12 g/mL和0.062 5 g/mL 4个浓度梯度对玉米种子萌发及幼苗生长的影响。结果表明,2种中药根际土壤水浸液对受体玉米种子吸胀过程中相对吸水量的增加有抑制作用,抑制程度随其浓度的升高而增强;玉米种子萌发和幼苗生长的化感效应在低浓度为表现为化感促进作用,在高浓度为表现化感抑制作用,对玉米幼苗渗透调节物质可溶性糖、MDA和Pro含量都有显著影响。种植地土壤水浸液对玉米的化感效应由强到弱依次为:党参和黄芪>黄芪>党参。
The purpose was to discuss allelopathy of Planting soil aqueous extract form Codonopsis pilosula and A. membranaceus, var. mongolicus on Zea mays, The effect of the different treating concentrations of queous extract,which was added in the sand of beaker expermient inside with the concentration of 0. 5,0. 25,0. 125, 0. 062 5 g/mL on seed germination and seedling growth of Zea mays was studied by bioassay method. The results showed that aqueous extract to inhibition Zea mays on the course of seed relative imbibition increased in the volume of water, the seed germination rate, germination index, seedling growth and the roots; in the Vicia faba plant was firstly raised and then reduced with the increment of aqueous extract concentration. The low concentration could stimulated the synthesis of chloroplast pigments, but restrain for its high concentra- tion. The content of dissolubility, malonaldehyde and Pro in the leaf was increased with the increment of queous extract concentration. Sense of allelopathic effects of Zea mays from the strong to weak as follows： Codonopsis pilosula and A. membranaceus, var. mongolicus 〉 A. membranaceus, var. mongolicus. 〉 Codonopsis pilosula.
出处
《种子》
CSCD
北大核心
2013年第4期29-33,36,共6页
Seed
基金
甘肃省中青年基金项目(编号:3 YS O61-A 25-030)
甘肃省教育厅资助项目(编号:0928 B-1)
陇南师范高等专科学校重点项目(编号:2012 LSZK 01001)
关键词
党参
黄芪
种植地土壤水浸液
玉米
化感作用
Codonopsis pilosula
A. membranaceus, var. mongolicus
planting soil aqueous extract
Zea mays
allelopathy
