Effects of selenium on leaf traits and photosynthetic characteristics of eggplant.

Lu Zhang, Xiawei Zhao, Yan Wang, Xinyu Ma, Haolin Li, Chengzhang Zhao
Author Information
  1. Lu Zhang: College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China.
  2. Xiawei Zhao: College of Ecology, Lanzhou University, Lanzhou 730070, China.
  3. Yan Wang: College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China.
  4. Xinyu Ma: College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China.
  5. Haolin Li: College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China.
  6. Chengzhang Zhao: College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China.

Abstract

The response of leaf traits and photosynthetic characteristics to selenium (Se) application reflects plant adaptation strategies for selenium-enhanced accumulation of photosynthetic products. This study selected eggplant as the research subject and conducted a field experiment to better understand these relationships. This study included three Se treatments, foliar sprays of 0.5mgL-1 (T1), 1mgL-1 (T2), and 1.5mgL-1 (T3), with tap water as the control (CK). The results revealed that T1 and T2 significantly improved leaf traits and photosynthetic characteristics compared to CK, while T3 had a negative effect. Regarding the leaf area-leaf thickness (LA-LT) trade-off relationship, the T2 treatment favoured LA, whereas the CK, T1, and T3 treatments favoured LT, with trade-off values of T3>T1>CK. Regarding the net photosynthetic rate-transpiration rate (Pn -Tr ) trade-off relationship, the CK treatment favoured Tr , whereas the T1, T2, and T3 treatments favoured Pn , with trade-off values of T2>T1>T3. In T1 and T2, the eggplant specific leaf area and Pn showed non-significant and highly significant positive correlations, respectively, and in CK and T3 showed non-significant and highly significant negative correlations, respectively. These results indicate that foliar application of Se at appropriate concentrations can increase crop productivity in semi-arid areas.

MeSH Term

Plant Leaves
Photosynthesis
Selenium
Solanum melongena

Chemicals

Selenium

Word Cloud

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