Biological Science and Technology College;
Shenyang Agricultural University;
Shenyang;
China;
Liaoning Province Research Center of Plant Genetic Engineering Technology;
Shenyang;
China;
Northeast Institute of Geography and Agroecology;
Chinese Academy of Sciences;
Changchun;
China;
Malate; Photosystem; II; Chlorophyll; Fluorescence; Maize; Tobacco;