干旱区生态环境知识资源中心(Arid): 环境异质性对潜在粮食作物沙米表型变异的影响

Arid

	环境异质性对潜在粮食作物沙米表型变异的影响
其他题名	Phenotypic variation of a potential food crop, Agriophyllum squarrosum, impacted by environmental heterogeneity
	尹成亮 1; 赵杰才 1; 胡进玲 1; 钱朝菊 1; 谢忠奎 1; 陈国雄 1; 燕霞 2; 马小飞 1
来源期刊	中国科学. 生命科学
ISSN	1674-7232
出版年	2016
卷号	46 期号:11 页码:1324-1335
中文摘要	沙米(Agriophyllum squarrosum)是广布于我国温带沙漠流动沙丘上的一年生先锋植物,具有很高的生态农业价值.因其长期适应不同沙漠环境的水热异质性,可能造成群体间生态适应表型的遗传分化,然而截止目前,鲜有对其进行系统性研究的报道.本研究运用同质园实验,调查了采集自不同种源的26个沙米群体的生长生殖特征,统计分析了包括植株高度、茎直径、基部分枝长、地上生物量、收获种子重量和种子粒径等重要生态农艺性状的变异模式及其与原产地生态环境因子的关系.结果表明,沙米表型性状呈现出以纬度变异为主的梯度变异模式,除种子粒径外,其他表型呈现出南部群组大于北部群组.南部群组趋向营养生长,而北部群组更倾向生殖生长.利用Canoco软件的RDA分析调查了沙米表型与19个生态气象因子之间的关系,发现北部群组表型与降雨量相关性大,而南部群组表型随温度变化明显,说明不同群组的生长特性与物质分配具有一定的局域适应性和遗传差异,这为理解沙生植物适应环境异质性的生态遗传基础提供了重要数据,同时可为沙米的引种驯化提供重要种质资源和评估方法.
英文摘要	Agriophyllum squarrosum, also called sand rice, is a pioneer annual plant endemic to mobile sand dunes across the temperate deserts of China. It has attracted great interest due to its high agro-ecology value. In this paper, based on a common garden experiment with 26 populations of A. squarrosum, we investigated the relationship between the bio-climatic factors of the original habitat and a couple of important agronomic traits, including Plant height (PH), Seed weight (SW), Stem diameter (STD), Basal branch length (BBL), Aboveground biomass (AGB) and Seed diameter (SED). In general, all the phenotypic traits were significantly related to the latitudinal gradient. Except for SED, all of the traits were higher in the South group than the North group. This result suggested that the South group tends toward vegetative growth, while the North group tends toward reproductive growth. Based on 19 bio-climatic factors from DIVA-GIS, a redundancy analysis with Cannock software showed that the North group was more affected by precipitation, whereas the South group was more affected by temperature. This phenomenon indicates that the natural variations in growth characteristics and energy distribution among the populations of A. squarrosum have been largely impacted by local adaptation and genetic differentiation. Our work supports empirical data for better understanding the ecological genetic basis of how psammophytes adapt to heterogeneous environments and provide important germplasm resources and evaluation methods for the domestication and breeding of A. squarrosum.
中文关键词	沙米 ; 同质园实验 ; RDA分析 ; 物种驯化
英文关键词	Agriophyllum squarrosum common garden experiment redundancy analysis plant domestication
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5857880
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235344
作者单位	1.中国科学院寒区旱区环境与工程研究所, 甘肃省寒区旱区逆境生理与生态重点实验室, 兰州, 甘肃 730000, 中国; 2.中国科学院寒区旱区环境与工程研究所, 中国科学院内陆河流域生态水文重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	尹成亮,赵杰才,胡进玲,等. 环境异质性对潜在粮食作物沙米表型变异的影响[J]. 中国科学院西北生态环境资源研究院,2016,46(11):1324-1335.
APA	尹成亮.,赵杰才.,胡进玲.,钱朝菊.,谢忠奎.,...&马小飞.(2016).环境异质性对潜在粮食作物沙米表型变异的影响.中国科学. 生命科学,46(11),1324-1335.
MLA	尹成亮,et al."环境异质性对潜在粮食作物沙米表型变异的影响".中国科学. 生命科学 46.11(2016):1324-1335.