不同作物对VA菌根真菌的依赖性差异

以玉米、 小麦、 大豆、 三叶草四种作物为试材， 在低和高两个施磷水平下接种或 不接种泡囊-丛枝菌根真菌(VAMF)， 研究不同作物的菌根依赖性及其影响因子。 结果表明 ， 接种菌根真菌显著地促进了玉米、 大豆、 三叶草的生长， 但小麦无此效果， 菌根依 赖性的大小顺序为玉米＞大豆＞三叶草＞小麦。 菌根真菌提高作物的叶绿

Variation between Mycorrhizal Dependency of Different Crops

Maize, wheat, soybean and clover were used as plant materials to invest igate their mycorrhizal dependency(MD) and factors involved. Results showed that maize, soybean and clover inoculated with vesicular arbuscular(VA) mycorrhizal f ungi, including Glomus mosseae and Glomus versiform, could significantl y increase their biomass, but wheat could do that not with the order of maize,soybean,clove r and wheat, through inoculation using VA mycorrhizal fungi. The leaf chloroghyll content and the photosynthesis rate of different crops could elevated,through i noculation with VA mycorrhizal fungi,the P uptake of crops could also enhanced. The contribution of VA mycorrhizal fungi to P uptake were different with differ ent crops,with maize ranking the first,followed by soybean, clover and wheat. T his was in good agreement with the order of their MD.