干旱区生态环境知识资源中心(Arid): 伊犁河谷苦豆子植冠种子库特征

Arid

	伊犁河谷苦豆子植冠种子库特征
其他题名	Canopy seed bank of Sophora alopecuroides L. in Ili River Valley
	刘影 1; 赵玉 1; 穆尼热 2; 李文慧 2
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2017
卷号	36 期号:4 页码:910-915
中文摘要	植物果实成熟后在植冠宿存延迟释放种子,是沙生生境植物的一种适应性性状。以分布于新疆霍城县荒漠草原内的野生苦豆子(Sophora alopecuroides L.)为研究对象,采用野外调查的方法,调查了野生苦豆子的植冠种子库的大小、种子活力、对土壤种子库的补充及其脱落动态。结果表明:在3月上旬,苦豆子植冠宿存种子的规模为271124粒· m~(-2);其中,完整种子达144138粒· m~(-2),构成了苦豆子的植冠种子库;对种皮进行机械破损后,植冠种子库的种子发芽率达76.98%11.89%,种子活力指数保持在72.4439.01;苦豆子生殖株植冠种子库种子宿存的时间长达9个月,可以在较长时间范围内有效补充土壤种子库,并与土壤种子库共同执行种群更新和群落演替的繁殖体供应库的功能。研究结果有助于了解苦豆子的繁殖生态学特性,解析其在伊犁河谷恶性蔓延的生物生态学机理,为伊犁河谷草原生态系统的科学管理提供理论支持。
英文摘要	Canopy seed banks and delayed release adaptations are particularly prominent in sandy ecosystems. In this study, we investigated the size, seed vigor, supplementary effect on soil seed bank,and the retention dynamics of Sophora alopecuroide canopy seed bank in a desert grassland of Huocheng County, Xinjiang. The result showed that canopy had 271 124 beans · m~(-2), and the number of complete seeds reached 144138 beans · m~(-2) which contributed to the canopy seed bank. After mechanical damage, the germination rate reached 76.98% 11.89%,seed vigor index was 72.4439.01,which indicated that canopy seed bank could keep higher seed vigor. Canopy seed bank lasted about nine months. As a result, canopy seed bank could be an effective supplement to the soil seed bank, and both of them performed as effective supply bank of propagules during population regeneration and community succession. The results would be helpful to understand the reproductive characteristics, reveal the bio-ecological mechanism of its malignant invasion,and provide theoretical support for management of grassland ecosystem in the Ili River Valley.
中文关键词	苦豆子 ; 植冠种子库 ; 种子活力
英文关键词	Sophora alopecuroides L. canopy seed bank seed vigor
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:5968367
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236557
作者单位	1.伊犁师范学院生物与地理科学学院, 新疆自治区普通高校天然产物化学与应用重点实验室, 伊宁, 新疆 835000, 中国; 2.伊犁师范学院化学与环境科学学院, 伊宁, 新疆 835000, 中国
推荐引用方式 GB/T 7714	刘影,赵玉,穆尼热,等. 伊犁河谷苦豆子植冠种子库特征[J],2017,36(4):910-915.
APA	刘影,赵玉,穆尼热,&李文慧.(2017).伊犁河谷苦豆子植冠种子库特征.生态学杂志,36(4),910-915.
MLA	刘影,et al."伊犁河谷苦豆子植冠种子库特征".生态学杂志 36.4(2017):910-915.