| Equisetum arvense L. is a perennial herb and belongs to PteridophytaEquisetaceae horsetail genus. E. arvense reproduce widely at northern soybean fields inChina. It can produce an effect on soybean growth by its rich allelochemicals. Throughbioassay method, we researched the effects of E. arvense root stock and summer branchleaching solution with different concentrations on seed germination, seedling growth of4varieties of soybeans, ie Heihe43, Huifeng0811, Heihang06-826and Mengdou36. Sowe could screen out soybean varieties that resistant on E. arvense, and provide atheoretical basis for the reasonable production of soybean and the sustainabledevelopment of agriculture. The results showed as follows.1. Seed germination, seedling growth of all varieties of soybeans showeddecreasing tendency as the leaching solution concentration of E. arvense graduallyincreased. Above all indicated that there was strong allelopathy of E. arvense root stockand summer branch leaching solution on soybean seed germination and seeding growth.There was stronger allelopathy of E. arvense root stock leaching solution on soybeanseed germination and seeding growth than E. arvense summer branch leaching solutiontreatment.2. Chllrophyll a, chllrophyll, water-soluble sugar content of all varieties ofsoybeans showed decreasing tendency and the malondialdehyde, MDA, chllrophyll bcontent of all varieties of soybeans showed increasing tendency as the leaching solutionconcentration of E. arvense gradually increased. Three kinds of protective enzymeactivity were different in4varieties of soybeans. Above all indicated that there wasstrong allelopathy of E. arvense root stock and summer branch leaching solution onsoybean seedling photosynthesis, membrane permeability and protective enzymesystem.3. Among four soybean varieties, MD36showed a greater resistance to allelopathyof E. arvense. Other varieties of soybeans showed sensitivity to allelopathy of E.arvense. |
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