Malus hupehensis（Pamp.）Rehd. 第1页

Effects of Exogenous Nitric Oxide on Chlorophyll Fluorescence Parameters and Photosynthesis Rate in Malus hupehensis Seedlings Under Water Stress Effects of Exogenous Nitric Oxide on Chlorophyll Fluorescence Parameters and Photosynthesis Rate in Malus hupehensis Seedlings Under Water Stress