欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

元宝枫天然种群种实表型多样性

乔谦1,丰震1*,任红剑1,安凯1,张林2,孙忠奎3#br#   

  1. (1山东农业大学林学院, 山东泰安 271018; 2泰安市泰山林业科学研究院, 山东泰安 271000; 3泰安时代园林科技开发有限公司, 山东泰安 271000)
  • 出版日期:2017-10-10 发布日期:2017-10-10

Phenotypic diversity of wing fruits and seeds in natural populations of Acer truncatum Bunge in China.

QIAO Qian1, FENG Zhen1*, REN Hong-jian1, AN Kai1, ZHANG Lin2, SUN Zhong-kui3#br#   

  1. (1College of Forestry, Shandong Agricultural University, Taian 271018, Shandong, China; 2Taishan Forestry Science Institute, Taian 271000, Shandong, China; 3Tai’an Shidai Technology Development Company Limited, Taian 271000, Shandong, China).
  • Online:2017-10-10 Published:2017-10-10

摘要:

为探索元宝枫(Acer truncatum)种群间和种群内的表型变异程度和变异规律,以元宝枫主要分布区内15个天然种群150个单株的13个种实性状为研究材料,采用巢氏方差分析、多重比较等分析方法,分析元宝枫种群间和种群内的表型多样性及其与地理生态因子间的相关性。结果表明:元宝枫果实、种子性状在种群内、种群间存在丰富的变异,各种实性状在种群内、种群间均具有极显著差异;元宝枫种群间表型分化系数为19.87%,种群内变异(80.13%)大于种群间变异(19.87%),种群内变异是变异的主要来源;元宝枫各性状平均变异系数为13.34%,变异幅度为8.98%~21.45%,种群间种子性状的平均变异系数(11.46%)低于种群间翅果性状的平均变异系数(14.52%),表明种子性状的稳定性高于果实性状。主成分分析结果显示,果实形态对元宝枫种群表型的贡献率大于种子贡献率。性状间相关性分析结果显示,翅果越大则种子越大,果翅角度性状与果实、种子大小皆无显著关系,推测其为独立因子。果实形态变异主要表现为经向变异,而种子性状无显著变异。利用种群间聚类分析将元宝枫15个种群分为三大类群。种群间与种群内多层次的变异模式为元宝枫种质资源保护与利用提供依据。
 

关键词: 硒, 有效性, 根际, 非根际, 水稻

Abstract: Acer truncatum is an endangered plant endemic to China. Our objectives were to determine the variations in phenotypic traits of A. truncatum populations and their spatial patterns. We used nested variation, coefficient of variation, multicomparison, correlation analysis and UPGMA cluster analysis to analyze 13 phenotypic traits of fruits and seeds for 150 individuals in 15 populations of A. truncatum. The results showed that there were extremely significant differences among and within populations. The mean coefficient of phenotypic differentiation between populations was 19.87%, which was lower than that within populations (80.13%), indicating that the variance within population was the main source of the phenotypic variation of the species. The coefficient of variance (CV) of the 13 traits was 8.98%-21.45%, with an average of 13.34%. The CV of seeds among populations (11.46%) was lower than that of wing fruits (14.52%), which means that the seeds have higher stability than the fruits. Principal component analysis (PCA) showed that the main variation source of A. truncatum came from the fruits. Correlation among traits showed that the larger the fruits, the larger the seeds. The angle of the fruits was independent of the fruits and seed sizes. The fruit morphology mainly presented longitudinal variations, while the seeds had no significant variation patterns. The 15 populations of A. truncatum could be clustered into three groups according to the UPGMA cluster analysis. The multiple variations among and within populations provided insights and guidelines for genetic conservation and utilization of A. truncatum germplasm resources.

Key words: rhizosphere, rice, non-rhizosphere, selenium, availability.