干旱区研究

干旱区研究 >

2014 , Vol. 31 >Issue 4: 739 - 743

DOI: https://doi.org/10.13866/j.azr.2014.04.23

植物与植物生理

喜盐鸢尾种子休眠与萌发特性初步研究

  • 卓露 ,
  • 管开云 ,
  • 李文军 ,
  • 布海丽且姆·阿卜杜热合曼
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  • 1.中国科学院新疆生态与地理研究所,新疆 乌鲁木齐 830011;
    2.中国科学院大学,北京 100049;
    3.中国科学院昆明植物研究所,云南 昆明 650201
卓露(1987-),女,在读硕士研究生,主要从事保护生物学研究. E-mail:zhuolu_19871020@163.com
管开云. E-mails:guanky@mail.kib.ac.cn

收稿日期: 2013-01-25

  修回日期: 2013-05-17

  网络出版日期: 2014-08-11

基金资助

中国科学院知识创新工程重要方向项目(KZCXZ-EW-Z-12)

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Dormancy and Germination of Iris halophila Seeds

  • ZHUO Lu ,
  • GUAN Kai-yun ,
  • LI Wen-jun ,
  • BUHAIRIQIEM Abudureheman
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  • 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China

Received date: 2013-01-25

  Revised date: 2013-05-17

  Online published: 2014-08-11

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摘要

喜盐鸢尾(Iris halophila)是一种干旱地区野生观赏花卉,种子萌发困难,限制了该种在园林绿化中的应用,也为育种工作带来难度。从吸水性和萌发性两个方面对喜盐鸢尾种子休眠原因和打破休眠的方法进行了探索。研究表明,在25/10 ℃(高温/低温)条件下,喜盐鸢尾种子萌发率最高,达到44.33%;胚乳中的萌发抑制物质是限制喜盐鸢尾种子萌发的主要原因;种皮可限制胚乳萌发抑制物质的释放。砂纸摩擦、切除部分胚乳和赤霉素(GA3)处理都能提高种子的萌发率。综合考虑经济费用和可操作性等因素,砂纸摩擦后蒸馏水浸种处理是打破喜盐鸢尾种子萌发行之有效的方法。

关键词： 喜盐鸢尾(Iris halophila); 观赏植物; 种子休眠; 种子萌发

本文引用格式

卓露 , 管开云 , 李文军 , 布海丽且姆·阿卜杜热合曼 . 喜盐鸢尾种子休眠与萌发特性初步研究[J]. 干旱区研究, 2014 , 31(4) : 739 -743 . DOI: 10.13866/j.azr.2014.04.23

Abstract

Iris halophila is an ornamental flower species distributed in arid regions, the germination percentage of its seeds is low, which causes a difficulty in its breeding, and the landscape application of this plant is severely constrained. The purpose of this study was to understand the dormancy of I. halophila seeds through conducting the absorbent and germination experiments. The results revealed that 25/10 ℃ was the most suitable temperature for germination of I. halophila seeds, and a germination rate of 44.33% was attained; it was considered that the germination inhibitory substances in endosperm may be the main factor restricting the germination of I. halophila seeds; seed coat may mechanically restrict the release of inhibitory substances in endosperm; the seed germination percentage could be increased through scarification and removal of endosperm and GA3, and scarification would be the best way of improving the germination of I. halophila seeds.

Key words： Iris halophila; ornamental plant species; seed dormancy; seed germination

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