| 摘要: |
| 为阐述高州油茶（Camellia gauchowensis）种群间和种群内叶片性状变异特征，在广东省内
高州油茶主产区选取3 个代表种群为研究对象，选择6 个叶片性状为特征变量，运用巢式方差分析、多
重比较、主成分分析、相关分析对叶片性状进行种群间、种群内差异分析。结果表明：（1）高州油茶
除叶厚、锯齿百分比外，其余叶片表型性状均存在极显著差异，种群间和种群内变异丰富。群内变异
（9.45%）大于群间变异（5.33%），因此叶片变异的主要来源是其群内变异。其中群间平均表型分化系
数（Vst）为0.362 7，分化水平较大。（2）叶片性状平均变异系数（CV）为16.77%（9.85%~35.02%），
其中叶柄长、叶厚、叶形指数、叶长、叶宽、锯齿百分比的变异系数依次为35.02%、15.67%、14.65%、
13.09%、12.33%，9.85%。（3）6 个叶片性状指标可归纳为3 个主成分，累积贡献率73.33%。（4）年均气
温越高，叶形指数越大；随着海拔上升，叶柄长度越短；纬度越高，年均降水量越大，锯齿百分比越小。
随着经度与纬度变大，叶形指数越小。 |
| 关键词: 高州油茶 种群 叶片性状 变异特征 |
| DOI： |
| 分类号: |
| 基金项目:广东省省级科技计划项目：油茶良种规模化繁育及丰产栽培关键技术研究与应用(2016A020206005)；广东省本土优质高产油茶良种选育研究(2015B020202002)，共同资助。 |
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| Leaf Phenotypic Variation in Populations of Camellia gauchowensis |
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ZHANG Peng,YANG Ying,XI Ru-chun,HUANG Rong-rong and XU Ye
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College of Forestry and Landscape Architecture,South China Agricultural University,College of Forestry and Landscape Architecture,South China Agricultural University,College of Forestry and Landscape Architecture,South China Agricultural University,College of Forestry and Landscape Architecture,South China Agricultural University,College of Forestry and Landscape Architecture,South China Agricultural University
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| Abstract: |
| To determine the leaf variation in Camellia gauchowensis populations and the relationships between
leaf variation and populations in different distribution areas，6 leaf traits from3 representative populations were
chosen. Using nested analysis of variance, coefficient of variation (CV), multiple comparison, principal component
analysis and correlation analysis to analyze these data. The results was as followed. (1)In addition to leaf thickness
and serration percentage, there were significant differences in the leaf traits. The variation within populations
(9.45%) was greater than that among populations (5.33%), which mean that the main source of leaf variation is
former one. The mean phenotypic differentiation coefficient (Vst) among populations was 0.362 7, which showed
the phenotypic variation was large. (2)The mean leaf variation coefficient (CV) was 16.77%, and the variation range
of the 6 leaf traits was 9.85%-35.02%. The variation coefficients of petiole length, leaf thickness, leaf index, leaf
length,leaf width, serration percentage were 35.02%,15.67%,4.65%,13.09 %,12.33%,9.85 % respectively.(3) Six leaf traits can be grouped into three main components, the cumulative contribution rate of 73.33%. (4) The higher the
average annual temperature, the greater the leaf shape index. As the elevation increased, the petiole becomes shorter.
The higher the latitude, the greater the annual precipitation, and the percentage of sawtooth became smaller. As the
longitude and latitude became larger, the smaller the leaf shape index. |
| Key words: Camellia gauchowensis populations leaf phenotypic traits variation characteristics |
