植物生态学报 ›› 2018, Vol. 42 ›› Issue (7): 752-763.DOI: 10.17521/cjpe.2017.0229

• 研究论文 • 上一篇    下一篇

枫香树种群种子与果实表型性状变异分析

何庆海,杨少宗,李因刚,沈鑫,柳新红()   

  1. 浙江省林业科学研究院, 杭州 310023
  • 出版日期:2018-07-20 发布日期:2018-03-08
  • 通讯作者: 柳新红
  • 基金资助:
    林业公益性行业科研专项(201404312);浙江省农业林木新品种选育重大专项(2016C02056-10)

Phenotypic variations in seed and fruit traits of Liquidambar formosana populations

HE Qing-Hai, YANG Shao-Zong, LI Yin-Gang, SHEN Xin, LIU Xin-Hong*()   

  1. Zhejiang Academy of Forestry, Hangzhou 310023, China
  • Online:2018-07-20 Published:2018-03-08
  • Contact: Xin-Hong LIU
  • Supported by:
    Supported by the Special Scientific Research of Forestry Public Welfare Profession of China(201404312);the Major Project of Agricultural (Forestry) Breeding of Zhejiang Province(2016C02056-10)

摘要:

为了明确我国枫香树(Liquidambar formosana)种子与果实表型变异程度和变异规律, 采用方差分析、相关分析和回归分析等方法对36个天然种群枫香树的10个种子与果实的表型性状在种群间和种群内表型变异和地理变异模式进行探讨。研究结果表明, 枫香树平均表型分化系数为57.55%, 种群间的变异是其表型变异的主要来源; 种子和果实表型性状的变异丰富, 变异幅度为10.05%-24.31%, 平均变异系数为15.83%; 不同种群间变异差别明显, 安福种群平均变异系数最大(16.73%), 建阳种群平均变异系数最小(11.48%)。枫香树多数种子与果实表型性状在地理变化上是随机的, 地理相近种群在表型上没有显著相关性。地理气候因子中1月平均气温、海拔和纬度对种子与果实性状起主要的影响。种子与果实性状与海拔相关分析表明, 枫香树种子长宽比随海拔的升高而减小, 种子长宽比可以推测种群所在的海拔高度。探讨枫香树种群表型多样性, 可为野生优异种质的收集、多目标品种选育等工作提供依据。

关键词: 枫香树, 种子性状, 果实特性, 表型变异, 天然种群

Abstract:

Aims Liquidambar formosanais a fast-growing and multipurpose native tree species in China. Our aim is to determine the phenotypic variations, adaption and distribution patterns of seed and fruit characteristics of L. formosana populations.

Methods Data for 10 phenotypic traits of seeds and fruits including fruit diameter, peduncle length, thousand kernel weight, seed length, seed width, seed wing length, seed wing width, seed width ratio, seed wing width ratio, ratio of seed length and seed wing length, were sampled from 36 natural L. formosana populations across China. Analysis of variance (ANOVA), correlation analysis, and regression analysis were used to analyze the phenotypic variations among and within populations.

Important findings Results showed that the mean phenotypic differentiation coefficient was 57.55%, which indicated that the phenotypic variation among populations was the main source of the phenotypic variation in L. formosana. The mean coefficient of variation was 15.83%, ranging from 10.05% to 24.31%, suggesting that the phenotypic variation of seeds and fruits was very plentiful. The coefficient of variation was different among populations. The mean coefficient of variation in Anfu was the highest (16.73%), while that of Jianyang was the lowest (11.48%). The pattern of geographic variation of most seed and fruit phenotypic traits was random. There was no significant correlation between the adjacent populations in phenotypic traits. The mean temperature in January, altitude and latitude played important roles in affecting the phenotypic traits. The length-width ratio of seeds decreased with the increase of altitude, which can be used to infer the altitude of the distribution of a population. Our results provide useful information for the collection of wild resources and the breeding of this economically important species.

Key words: Liquidambar formosana, seed traits, fruit characteristics, phenotypic variations, nature populations