4种牧草接种AM真菌效应分析

通过对红三叶(Trifolium pratense)、白三叶(Trifolium repens)、高丹草(Sorghum sudanense)、紫花苜蓿(Medicago sativa)接种AM真菌,测定植物根际AM真菌菌根侵染率、孢子密度,地上和地下部分生物量,了解宿主植物与AM真菌之间的协同作用,明确AM真菌对牧草的促生长效应,并筛选与4种牧草匹配的AM真菌。结果表明,AM真菌可侵染4种牧草且均能产生孢子,但不同牧草的侵染率和孢子密度存在差异。当对高丹草接种Glomus mosseae、Glomus intraradices、Glomus etunicatum、Glomus cladoideum、Glomus microagregatum、Glomus caledonium(简称G6),对红、白三叶接种Glomus intraradices(简称Gi),对苜蓿接种Glomus mosseae(简称Gm)时产量提高水平较对照组最为明显,接种AM真菌有效促进了植株的生长发育,提高了牧草的产量。

Effect of inoculation with AM fungi on four forages growth

Used AM fungi to inoculate Trifolium pratense ,Trifolium repens ,Sorghum sudanens ,Medicago sativa ,the density of AM fungi spores,infection rate in the plant rhizosphere,ground and underground biomass were measured to understand the synergies between the host plants and AM fungi and to clarify the effect of AM fungi on the growth-promoting as well as to select the appropiate AM fungi for the forages.The results showed that AM fungi could infect four forages and produce spores,and there was difference on infection rate and spore density in four forages.Glomus mosseae ,Glomus intraradices ,Glomus etunicatum ,Glomus cladoi-deum ,Glomus microagregatum ,Glomus caledonium could increase yield of Sorghum hybrid sudanens,Glomus intraradices and Glomus mosseae could increase yield of red and white clover,and alfalfa as well.AM fungi im-proved the growth and promoted forage yield.