Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (13): 53-58.doi: 10.11924/j.issn.1000-6850.casb19030108

Special Issue: 园艺 农业气象

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A Comparative Study on the Photosynthetic Characteristics Among Cerasus humilis Varieties in Arid Areas

Yao Ze1,2, Jiang Shengxiu1,3(), Yan Zizhu1,3, Wu Hao1,3, Liu Guangwu1,4   

  1. 1 Gansu Desert Control Research Institute, Lanzhou 730070
    2 Gansu Psammophyte Engineering Technology Research Center, Lanzhou 730070
    3 State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Lanzhou 730070
    4 Gansu Minqin National Field Observation & Research Station on Ecosystem of Desert Grassland, Minqin Gansu 733000;
  • Received:2019-03-26 Revised:2019-07-17 Online:2020-05-05 Published:2020-04-16
  • Contact: Shengxiu Jiang E-mail:yanyunjiang1987@163.com

Abstract:

Study on leaf morphology and photosynthetic characteristics of Cerasus humilis among different varieties in the northwest arid region can provide a basis for the selection of high yield, high quality and water-saving varieties. To clarify the morphological and photosynthetic characteristics of leaves and their correlation among different kinds of C. humilis, the photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr) and intercellular CO2 concentration (Ci) and leaf area were measured by Li-6400 photosynthesis system. The results showed that: (1) there were significant differences in leaf length and leaf width among different C. humilis varieties, the leaf area was ‘Nongda No.5’> ‘Nongda No.7’> ‘Nongda No.6’> ‘ecological late maturing’> ‘ecological early maturing’; (2) the net photosynthetic rate and transpiration rate of ‘Nongda No.7’ were the highest, of which, the net photosynthetic rate was significantly higher than that of ‘Nongda No.6’ and ecological early maturing, and the transpiration rate were significantly higher than that of other varieties, the stomatal conductance and intercellular CO2 concentration of the five C. humilis varieties had no significant difference; (3) the correlations among net photosynthesis rate, stomata conductance, transpiration rate and leaf area were highly and significantly positive, and the correlation between intercellular CO2 concentration and leaf area was highly and significantly negative; (4) the correlations among net photosynthesis rate, stomatal conductance, transpiration rate, leaf vapor pressure deficit and leaf temperature were highly and significantly positive, and the correlation between net photosynthesis rate and intercellular CO2 concentration was highly and significantly negative.

Key words: Cerasus humilis, photosynthetic characteristics, photosynthetic rate, transpiration rate, leaf area, arid areas

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