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元宝山冷杉与资源冷杉花粉结构比较研究

蒋忠圆 韦金鑫 韦宇静 韦玉赏 蒋瑛 丁涛

广西科学院学报2025，Vol.41Issue(3)：306-313,8.
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广西科学院学报2025，Vol.41Issue(3)：306-313,8.DOI:10.13657/j.cnki.gxkxyxb.20251017.007

元宝山冷杉与资源冷杉花粉结构比较研究

Comparative Study of Pollen Morphology between Abies yuan-baoshanensis and Abies ziyuanensis

蒋忠圆 1韦金鑫 2韦宇静 2韦玉赏 3蒋瑛 4丁涛5

作者信息

  • 1. 广西师范大学生命科学学院,广西桂林 541006||广西壮族自治区中国科学院广西植物研究所,广西喀斯特植物保育与恢复生态学重点实验室,广西桂林 541006
  • 2. 广西壮族自治区中国科学院广西植物研究所,广西喀斯特植物保育与恢复生态学重点实验室,广西桂林 541006
  • 3. 融水苗族自治县元宝山国家级自然保护区管理中心,广西柳州 545300
  • 4. 广西桂林银竹老山资源冷杉国家级自然保护区管理处,广西桂林 541400
  • 5. 广西壮族自治区中国科学院广西植物研究所,广西喀斯特植物保育与恢复生态学重点实验室,广西桂林 541006||桂林兴安漓江源森林生态系统广西野外科学观测研究站,广西桂林 541316
  • 折叠

摘要

Abstract

In order to reveal the effects of pollen structure differences between Abies yuanbaoshanensis and A.ziyuanensis on their reproductive adaptability and genetic relationship,the morphological structures of their pollen grains were observed and analyzed by Scanning Electron Microscopy(SEM).The results showed that the pollen grains of A.ziyuanensis[(5 373.26±571.36)μm2]were significantly larger than that of A.yuanbaoshanensis[(4 230.15±287.90)μm2,P＜0.05].The former was nearly spherical[length of polar axis/length of equatorial axis(P/E)=1.02±0.10],while the latter were prolate(P/E=1.19±0.09).The outer walls of both species were cerebral striated,and the surface of the sacci was wrinkled.However,the sac-ci of A.ziyuanensis[(1 770.20±552.30)μm2]were significantly larger than those of A.yuanbaoshanensis[(1 190.22±198.85)μm2,P＜0.05],and the lumina diameter of A.ziyuanensis[(0.29±0.13)μm]was significantly smaller than that of A.yuanbaoshanensis[(0.71±0.14)μm,P＜0.05].The transition between the cap and saccus was gentle in A.yuanbaoshanensis(concave angle＞90°),whereas it was constricted into a neck-like shape in A.ziyuanensis(concave angle＜90°).There are significant differences in pollen mor-phology,saccus structure and connection mode between A.yuanbaoshanensis and A.ziyuanensis,indicating that they may belong to different evolutionary branches.A.ziyuanensis is close to A.fargesii branch,and A.yuanbaoshanensis is close to A.recurvata branch,which provides key palynological evidence for the sys-tematic taxonomy of Abies.

关键词

元宝山冷杉/资源冷杉/花粉结构/濒危植物/系统分类

Key words

Abies yuanbaoshanensis/Abies ziyuanensis/pollen structure/endangered plants/systematic taxon-omy

分类

生物学

引用本文复制引用

蒋忠圆,韦金鑫,韦宇静,韦玉赏,蒋瑛,丁涛..元宝山冷杉与资源冷杉花粉结构比较研究[J].广西科学院学报,2025,41(3):306-313,8.

基金项目

广西自然科学基金项目(2025GXNSFAA069161),广西植物研究所学科发展基金项目(桂植发030)和广西林业科技推广示范项目(桂林科字[2022]第23号)资助. （2025GXNSFAA069161）

广西科学院学报

1002-7378

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