Journal of Tianjin Agricultural University ›› 2023, Vol. 30 ›› Issue (6): 16-21.doi: 10.19640/j.cnki.jtau.2023.06.004

• Researches and Scientific Notes • Previous Articles     Next Articles

Comparison of morphological structures of leaves and physiological characteristics of two Jujube varieties

Zhang Ranran1, Zhang Guixia1, Wang Dan1, Corresponding Author, Xie Zihao1, Zhang Zenghai2   

  1. 1. College of Horticulture and Landscape, Tianjin Agricultural University,Tianjin 300392, China;
    2. Tianjin Nongken Jingang Port Co., Ltd., Tianjin 300450, China
  • Received:2022-10-25 Online:2023-12-31 Published:2024-02-05

Abstract: Annual grafted seedlings(rootstocks were sour jujubes)of two jujube varieties, ‘Yueguang’ and ‘Fucuimi’, were used as the test material for the study. The morphological structures of young leaves of two jujube varieties were determined by microscopic micrometer, and their leaf physiological indexes and photosynthetic pigment contents were measured to explore the suitability of two jujube varieties in the Tianjin area and provide a reference for its introduction and cultivation in the Tianjin area. The results showed that no stomata were found on the upper epidermis of the leaves of either jujube variety, and stomata were mainly distributed on the lower epidermis. The thickness of young jujube leaves was 191.01 μm, the thickness of upper and lower epidermal cells were 28.69 and 22.29 μm respectively, the thickness of lower cuticle of leaves was 3.28 μm, the thickness of xylem of leaf veins was 107.99 μm, and all these indexes were significantly greater than those of ‘Yueguang’. Comprehensive analysis showed that compared with ‘Yueguang’, the leaf structure of young ‘Fucuimi’ jujube trees had enhanced water retention, water transport and photosynthetic capacity, making ‘Fucuimi’ more suitable for introduction and promotion in Tianjin area.

Key words: Yueguang, Fucuimi, morphosis, physiology, photosynthetic pigment content

CLC Number: