Effects of Arbuscular Mycorrhizal Fungi on Growth and Photosynthetic Characteristics of Robinia pseudoacacia under Different Water Conditions
Effects of two arbuscular mycorrhizal fungi (Glomus intraradices and G.mosseae) on the growth and photosynthetic characteristics of Robinia pseudoacacia under different water conditions (well watered and water stressed) were studied.The results revealed that arbuscular mycorrhizal fungi (AMF) increased plant height,ground diameter,dry mass of the shoot as well as dry mass of the root of R.pseudoacacia under both well watered and water stressed conditions.Under well watered condition,AMF notably increased water use efficiency,while photosynthetic characteristics such as net photosynthetic rate and transpiration rate were not influenced.Under water stressed condition,AMF significantly increased net photosynthetic rate,stomotal conductance,intercellular CO2 concentration,transpiration rate,Fm,Fv/Fm as well as qP,while water use efficiency was decreased.It was concluded that AMF promoted the growth of R.pseudoacacia via different mechanisms under different water conditions.Under well watered condition,AMF boosted growth of R.pseudoacacia by increasing water use efficiency as improving photosynthesis under water stressed condition.
国家科技期刊平台
NSTL
万方数据
维普
