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植物研究 ›› 2019, Vol. 39 ›› Issue (3): 387-394.doi: 10.7525/j.issn.1673-5102.2019.03.009

• 研究报告 • 上一篇    下一篇

杜仲种质资源果实主要数量性状变异及概率分级

杜庆鑫, 庆军, 王璐, 刘攀峰, 何凤, 朱利利, 杜红岩   

  1. 中国林业科学研究院经济林研究开发中心, 国家林业局杜仲工程技术研究中心, 郑州 450003
  • 收稿日期:2019-01-02 出版日期:2019-05-05 发布日期:2019-05-11
  • 通讯作者: 杜红岩 E-mail:dly515@126.com
  • 作者简介:杜庆鑫,男(1991-),硕士,主要从事杜仲育种与栽培。
  • 基金资助:
    “十三五”国家重点研发计划(2017YFD0601302)

Variation and Probability Grading of Main Quantitative Traits of Fruits for Eucommia ulmoides Germplasm

DU Qing-Xin, QING Jun, WANG Lu, LIU Pan-Feng, HE Feng, ZHU Li-Li, DU Hong-Yan   

  1. Non-timber Forest Research and Development Center, Chinese Academy of Forestry, the Eucommia Engineering Research Center, National Forestry Administration, Zhengzhou 450003
  • Received:2019-01-02 Online:2019-05-05 Published:2019-05-11
  • Supported by:
    National Key R&D Program of China(2017YFD0601302)

摘要: 为更好对杜仲种质资源果实进行评价及描述,丰富数量化、规范化的杜仲种质资源描述系统。本研究以331份杜仲种质资源为材料,对杜仲果实18个主要数量性状进行统计分析和概率分级。结果显示:杜仲果实数量性状变异较为丰富,硬脂酸变异系数最大,为17.88%,其次是种仁大小指数(17.17%),亚麻酸变异系数最小,为4.64%。经K-S检验,除种仁横径和种仁大小指数Sig值小于0.05外,其余性状均大于0.05,符合正态分布。种仁横径和种仁大小指数呈偏态分布,去除拖尾部分,也近似看作正态分布。对符合正态分布的数量性状统一用(X-1.2818S)、(X-0.5246S)、(X+0.5246S)、(X+1.2818S)4个点分为5级,使1~5级出现的概率分别为10%、20%、40%、20%和10%。本研究初步建立了杜仲种质资源果实数量性状概率分级指标体系,对杜仲种质资源果实性状评价、利用及良种选育具有一定指导意义,同时为我国杜仲种质资源果实性状描述规范和数据标准化的建立提供参考。

关键词: 杜仲, 果实, 数量性状, 变异, 概率分级

Abstract: To make better evaluation of Eucommia ulmoides fruits, enrich the content of quantitative and normalized E.ulmoides germplasm descriptor system, we collected 331 samples of Eucommia germplasm and studied 18 fruits quantitative traits by statistical analysis and probability grading. The large variation present in E.ulmoides fruit quantitative characters, and the highest occurred in stearic acid content(17.88%), followed by seed size index(17.17%), and the smallest occurred in linolenic acid content(4.64%). K-S test showed that 16 fruit quantitative traits conformed to the normal distribution with the significance value higher than 0.05, except seed horizontal diameter and seed size index. Seed horizontal diameter and seed size index that followed skewed distribution could be regarded and treated as those conforming to normal distribution. Eighteen quantitative traits that conformed to the normal distribution could be divided into 5 grades by 4 dividing points including X-1.2818S, X-0.5246S, X+0.5246S and X+1.2818S. An index system of probability grading for 18 quantitative traits was built, which could provide reference for evaluation, utilization and breeding programm of E.ulmoides resources, and it could provide a reference for specification and data standardization of E.ulmoides fruits descriptor system.

Key words: Eucommia ulmoides, fruits, quantitative traits, variation, probability grading

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