The influence of leaf anatomical traits on photosynthetic in coffee leaves in Yunnan of China

Abstract

AbstractLeaf photosynthesis is largely determined by anatomical features. This work aimed to reveal the quantitative effects of Coffea arabica leaf anatomical structure on photosynthesis. Pearson’s correlation and path analysis was used to explore the correlation between leaf structure and photosynthesis. The comprehensive evaluation value of the correlation between leaf anatomical traits and photosynthetic parameters is calculated by using the Criteria Importance Though Intercrieria Correlation (CRITIC) method to obtain the objective weight of each photosynthetic parameter. Most of the leaf’s anatomical traits significantly (P<0.05) to highly significantly (P<0.01) correlated with photosynthetic parameters, suggesting that anatomical traits greatly affected photosynthetic capacity in Coffea arabica leaf. Likewise, path coefficient analysis revealed that all the leaf anatomical traits influenced photosynthetic capacity directly and indirectly. The results of the comprehensive evaluation showed that leaf thickness (LT) and stomatal density (d) are the anatomical characteristics most closely related to photosynthesis. These results may help pinpoint anatomical features required to gain higher photosynthesis in coffee leaves.