img

官方微信

高级检索

中国沙漠 ›› 2021, Vol. 41 ›› Issue (4): 45-50.DOI: 10.7522/j.issn.1000-694X.2021.00031

• • 上一篇    下一篇

沙柳(Salix psammophila)茎带化表型的鉴定与解剖结构

杨海峰a(), 李安玉a, 王佳琪a, 张国盛a, 王树森b, 张鑫a   

  1. a.内蒙古农业大学,林学院,内蒙古 呼和浩特 010019
    b.内蒙古农业大学,沙漠治理学院,内蒙古 呼和浩特 010019
  • 收稿日期:2020-12-05 修回日期:2021-03-25 出版日期:2021-07-27 发布日期:2021-07-27
  • 作者简介:杨海峰(1975—),男,内蒙古呼和浩特人,副教授,主要从事林木基因组学及林木基因工程的科研与教学工作。E-mail: haifeng@imau.edu.cn
  • 基金资助:
    内蒙古自治区科技计划项目(2021GG0075);国家科技重大专项(2018ZX08020002-005-005);国家自然科学基金项目(31660216)

Identification of fasciation phenotype and anatomic structure analysis in Salix psammophila

Haifeng Yanga(), Anyu Lia, Jiaqi Wanga, Guosheng Zhanga, Shusen Wangb, Xin Zhanga   

  1. a.College of Forestry /, Inner Mongolia Agricultural University,Huhhot 010019,China
    b.College of Desert Control Science and Engineering, Inner Mongolia Agricultural University,Huhhot 010019,China
  • Received:2020-12-05 Revised:2021-03-25 Online:2021-07-27 Published:2021-07-27

摘要:

为解析沙柳(Salix psammophila)带化茎与正常茎的表型差异,对1、2年生的沙柳带化茎的外部形态、解剖结构进行了表型比对及数据统计分析。结果表明:沙柳带化茎呈明显的扁平状,茎顶端呈现穗状,向下扭曲缠绕;带化茎的髓心呈扁圆形,木射线不以髓心为原点,呈放射状分布,部分木射线趋近于平行分布;维管束数量、木质部厚度、韧皮部厚度、导管数量均有显著性增加,但导管直径无显著性增加;该带化表型在扦插繁殖后仍然继续出现。沙柳带化茎与野生型茎呈现显著差异,且扦插繁殖可以保持该带化性状的稳定遗传。

关键词: 沙柳(Salix psammophila), 带化, 表型, 解剖结构

Abstract:

In order to analyze the phenotypic difference between fasciated stems and normal stems in Salix psammophila, phenotypic comparison and statistical analysis were carried out on the changes of external morphology and anatomical structure of the annual and biennial fasciated stem of S. psammophila. It was found that the fascinated stem was obviously flat, and the top of the stem showed spikelike twisted downward. The pith of the fasciated stem was oblate, and wood rays were radially distributed without the pith as the origin, and some wood rays tend to be parallel. And the number of vascular bundles, xylem thickness, phloem thickness, and the number of vessel all increased significantly, but the diameter of vessel did not. This fasciated phenotype continued to appear after cutting propagation. This study showed that fascinated stems of S. psammophila are significantly different from the wild-type S. psammophila, and cutting propagation can maintain the stable inheritance of this fascinated trait. The research on fasciated phenotype provides a research basis for analyzing the formation cause and mechanism.

Key words: Salix psammophila, fasciation, phenotype, anatomical structure

中图分类号: