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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (5): 63-68.doi: 10.11924/j.issn.1000-6850.casb2022-0183

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Leaf Morphological Diversity of Idesia polycarpa Maxim in Sixteen Wild Resource Distribution Areas in Hubei Province

CHEN Huiling1(), LIU Hua2, HUANG Guowei1, MA Linjiang1, ZHOU Xiong3, ZHANG Xinye1()   

  1. 1 Hubei Academy of Forestry, Wuhan 430075
    2 Management Station of Forest Tree Seedlings of Hubei Provincial Forestry Department, Wuhan 430079
    3 Qingtaiguan Forest Farm, Luotian, Hubei 438636
  • Received:2022-03-17 Revised:2022-05-22 Online:2023-02-15 Published:2023-02-06

Abstract:

The study aims to clarify the difference of leaf morphological characteristics of Idesia polycarpa Maxim in different distribution areas of Hubei Province, guide the development and application of Idesia polycarpa Maxim germplasm resources and explore its molecular genetic diversity. The leaf length, leaf width, petiole length, leaf area, leaf length-width ratio and morphological factor of Idesia polycarpa Maxim in sixteen wild resource distribution areas in Hubei were measured and analyzed. The following results were obtained. (1) The variation coefficient of leaf characters in the sixteen wild resource distribution areas was 1.84%-40.54%, indicating that there were significant differences in leaf morphological characteristics in different distribution areas; the heritability of leaf length, leaf width, petiole length, leaf perimeter, leaf area, leaf length-width ratio and morphological factor were greater than 88%, indicating that the leaf morphology of Idesia polycarpa Maxim was controlled by heredity to a great extent. (2) The analysis of the correlation between leaf morphological characteristics and latitude, longitude and altitude in the sixteen wild resource distribution areas showed that the size and shape of Idesia polycarpa Maxim leaf were closely related to the longitude, latitude and altitude of resource wood, and the leaf morphology of Idesia polycarpa Maxim in different geographical locations was very different. (3) According to the results of leaf morphology cluster analysis, taking the genetic distance of 10.50 as the threshold, the germplasm of Idesia polycarpa Maxim in the sixteen wild resource distribution areas could be divided into five types based on different leaf morphology. In conclusion, the results of leaf morphological diversity study indicate that there are rich genetic variations of leaf morphology of Idesia polycarpa Maxim in different regions of Hubei Province, and the study can lay a technical foundation for the breeding and improvement of Idesia polycarpa Maxim.

Key words: Idesia polycarpa Maxim, leaf morphology, correlation analysis, cluster analysis