不同pH值下接种AM真菌对枳橙苗生长及光合作用的影响

以枳橙Citrus sinensis×Poncirus trifoliata为试材,研究不同pH值（5.5～6.5,6.5～7.5,7.5～8.5）条件下接种丛枝菌根（AM）真菌摩西球囊霉Glomus mosseae对枳橙苗生长及光合能力的影响。结果表明,不同pH值水平下接种摩西球囊霉均能有效地侵染枳橙植株,菌根侵染率在65%以上;接种处理植株的菌根侵染率、株高、生物量干重、叶片叶绿素含量、光合作用速率和蒸腾速率等指标均显著高于不接种植株;接种AM真菌增强了宿主植物对碱性土的适应性。 Citrange seedlings （Citrus sinensis （L.） Osbeck X Poncirus trifoliata （L.） ） were used to study the effect of arbuscular mycorrhizal （AM） fungus （Glomus mossease） on growth and photo- synthesis of the trees under different pH conditions （pH 5.5-6.5, 6.5-7. 5, 7. 5-8. 5）. Results indicated that the mycorrhizal fungus Glomus mossease was equally effective in infecting plants under all tested pH conditions and the infection rates were higher than 65 %. Mycorrhiza infection rate, plant height, dry weight, chlorophyll content, photosynthetic activity and transpiration rate of inoculated plants were significantly higher than those of control plants. Inoculation with AM fungi enhanced the adaptability of the host plants to alkaline soils.