Characteristics of Leaf Epidermis of 22 Lilieae (Liliaceae) under Different Altitudes in China  

作　　者：Genshen Yin Shuangshuang Zhang Wenlei Cheng Minghua Dong Ye Chen Genshen Yin;Shuangshuang Zhang;Wenlei Cheng;Minghua Dong;Ye Chen(School of Agriculture & Life Sciences, Kunming University, Kunming, China)

机构地区：[1]School of Agriculture & Life Sciences, Kunming University, Kunming, China

出　　处：《American Journal of Plant Sciences》2023年第1期29-40,共12页美国植物学期刊（英文）

摘　　要：In this study, 22 leaf samples of 22 Lilieae species were collected in six Province at 90 - 3740 m to study the variations of leaf characteristics with altitude change. The Qualitative character of leaf epidermis and two stomatal indexes, viz. stomatal area (SA), stomatal index (SI), were analyzed in laboratory. The results show that: 1) the shape of the leaf epidermis cells and the pattern of the anticlinal walls provide some useful taxonomic information to distinguish the genus, however, none of the stable traits are exclusive to a genus;2) there are significant or even very significant linear correlations between the two indexes and altitude, of which SA exhibit a negative correlation with altitude (r² = 0.294, p = 0.009), while SI exhibit a positive correlation with altitude (r² = -0.254, p = 0.017). As a result, the pattern of leaf cells and anticlinal walls is influenced by genetic factors, while the stomatal area and stomatal index are influenced by environmental factors. Members of the tribe Lilieae have a relatively stable elevation range, which is related to their long-term adaptation to the local environment in the structure of their leaf epidermis.In this study, 22 leaf samples of 22 Lilieae species were collected in six Province at 90 - 3740 m to study the variations of leaf characteristics with altitude change. The Qualitative character of leaf epidermis and two stomatal indexes, viz. stomatal area (SA), stomatal index (SI), were analyzed in laboratory. The results show that: 1) the shape of the leaf epidermis cells and the pattern of the anticlinal walls provide some useful taxonomic information to distinguish the genus, however, none of the stable traits are exclusive to a genus;2) there are significant or even very significant linear correlations between the two indexes and altitude, of which SA exhibit a negative correlation with altitude (r² = 0.294, p = 0.009), while SI exhibit a positive correlation with altitude (r² = -0.254, p = 0.017). As a result, the pattern of leaf cells and anticlinal walls is influenced by genetic factors, while the stomatal area and stomatal index are influenced by environmental factors. Members of the tribe Lilieae have a relatively stable elevation range, which is related to their long-term adaptation to the local environment in the structure of their leaf epidermis.

关 键 词：Lilieae Leaf Epidermis Stomatal Area Stomatal Index ALTITUDES 

分 类 号：F42[经济管理—产业经济]