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中国农学通报 ›› 2018, Vol. 34 ›› Issue (19): 39-43.doi: 10.11924/j.issn.1000-6850.casb17050117

• 林学 园艺 园林 • 上一篇    下一篇

恩施红椿种子发芽率及苗期特性分析

王瑞文,黄国伟,陈慧玲,张新叶   

  1. 湖北省林业科学研究院,湖北省林业科学研究院,湖北省林业科学研究院,湖北省林业科学研究院
  • 收稿日期:2017-05-26 修回日期:2017-06-28 接受日期:2017-07-17 出版日期:2018-07-11 发布日期:2018-07-11
  • 通讯作者: 王瑞文
  • 基金资助:
    湖北省林业科学研究院青年基金项目“红椿种质资源收集及无性快繁技术研究”(2017YQNJJ07)。

Seed Germination Rate and Seedling Characteristics of Toona ciliata in Enshi

  • Received:2017-05-26 Revised:2017-06-28 Accepted:2017-07-17 Online:2018-07-11 Published:2018-07-11

摘要: 为保护湖北乡土红椿资源和良种选育提供理论基础,以恩施红椿7 个半同胞家系为研究对象,对种子发芽率、1 年生苗木成活率、苗高、地径等生长性状及叶片性状进行分析。结果表明,参试红椿种子发芽率、成活率均较低且在红椿半同胞家系间差异显著,平均发芽率为38%,平均成活率为21%,XE-4家系发芽率和成活率最高。苗高、地径、冠幅、枝数、叶片数、复叶长度、叶片鲜重等7 个指标在红椿半同胞家系间差异显著,遗传力与遗传变异系数较高,属于中高度遗传,变异丰富具有选育潜力且能稳定遗传。地径与冠幅、叶片数、叶片鲜重、叶片干重极显著相关。综合考虑,初步筛选出XE-2、XE-4、XE-5 优良家系。

关键词: 玉米, 玉米, SSR标记, 纯度, 鉴定

Abstract: The paper aims to provide a theoretical basis for resource conservation, improve variety selection and protect local resources of Toona ciliata in Hubei. Seven half-sib families of Enshi T. ciliata were taken as the study objects, and the seed germination rate, one-year seedling survival rate, growth traits such as seedling height, ground diameter and leaf character were analyzed. The results showed that the seed germination rate and the seedling survival rate were relatively low and had significant difference among the seven half-sib families. The average seed germination rate was 38%, the average seedling survival rate was 21%, and the XE-4 half-sib family had the highest of both. Seven indexes, including seedling height, ground diameter, crown width, branch number, leaf number, compound leaf number and fresh leaf weight, had significant difference among the seven half-sib families, and had a wide range of variation, with high heredity ability and stable inheritance. The ground diameter showed a positive correlation with crown width, leaf number, leaf fresh weight and leaf dry weight. By comprehensive consideration, three sib-families, XE-2, XE-4, XE-5, were selected as the superior family.

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