内网办公 | English | 中国科学院  
首页 | 机构概况 | 机构设置 | 科研成果 | 研究队伍 | 研究生教育 | 国际交流 | 院地合作 | 学术期刊 | 创新文化 | 图书馆
 
   
  科研成果
概况介绍
获奖
发表论文
专著
专利
在研项目
 
您的位置: 首页 >>> 研究成果
Korean pine seed: linking changes in dormancy to germination in the 2 years following dispersal
论文题目: Korean pine seed: linking changes in dormancy to germination in the 2 years following dispersal
第一作者: Song, Yuan
刊物名称: FORESTRY
学科: Forestry
发表年度: 2018
卷: 91
期: 1
页码: 98-109
摘要:

Previous studies suggest that when using natural regeneration of Korean pine (Pinus koraiensis Sieb. et Zucc.) many seeds do not germinate until the second Spring after dispersal and hence are subject to significant predation pressures. This could be an important factor affecting the restoration of Mixed-broadleaved Korean pine forests in northeast China. This study examined changes of dormancy status under laboratory and field conditions as well as physiological mechanisms involving abscisic acid (ABA), gibberellin acids (GA(1+3), GA(4+7)) and the storage reserves of seeds. Our results suggest that seeds of Korean pine have primary dormancy that can be classified as morphophysiological dormancy, i.e. when dispersed they have an underdeveloped embryo with a physiological component of dormancy. A proportion of seeds germinate in the first year after dispersal as the winter chill has broken the physiological dormancy but only when the embryo has had time to elongate in April-June. The remaining seeds germinate in the second Spring after dispersal when embryos are fully developed and the physiological dormancy imposed in the Summer after dispersal has been broken by winter chilling. Thus the seed strategy of Korean pine attempts to reduce risks by providing opportunities for germination in 2 years following dispersal.

全文链接: https://academic.oup.com/forestry/article-abstract/91/1/98/4345633?redirectedFrom=fulltext
影响因子: 2.232

关闭窗口

返回首页


网站地图联系我们︱流量分析
@ 2002-2009 中国科学院沈阳应用生态研究所 版权所有. ALL RIGHTS RESERVED.
辽ICP备05000862号 地 址:沈阳市沈河区文化路72号 邮政编码:110016
网管信箱:webmaster@iae.ac.cn