干旱区生态环境知识资源中心(Arid): 荒漠草原土壤相对湿度对猪毛蒿表型可塑性的影响

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	荒漠草原土壤相对湿度对猪毛蒿表型可塑性的影响
其他题名	Effects of heterogeneous habitats on phenotypic plasticity of Artemisia scoparia in the desert steppe of China
	陈林1 ; 苏莹 1; 李月飞 1; 杨丽娜 2; 王磊 1; 宋乃平1 ; 杨新国 1; 卞莹莹 3; 祝忠有 1; 孟文婷 1; 陈娟 1
来源期刊	生态学报
ISSN	1000-0933
出版年	2019
卷号	39 期号:10 页码:3547-3556
中文摘要	猪毛蒿(Artemisialpha scoparialpha)为菊科蒿属草本植物,是一种适应性较强的广幅种。研究荒漠草原不同土壤相对湿度条件下猪毛蒿的表型可塑性,对认识异质生境下猪毛蒿的生存适应策略具有重要的生态学意义。结果表明:株高、茎粗、根长、根重和单株生物量均表现出随土壤相对湿度的增大而增加的趋势,对异质生境具有较强的可塑性,而根冠比则表现出相对的稳定性。植株不同部位生物量大小排序为:上部<中部<下部,且植株下部显著大于上部生物量(P<0.05)。土壤相对湿度>40%生境下的头状花序数量和重量显著高于土壤相对湿度<30%和30%-40%生境。繁殖器官绝对投入量(lg R)随着个体大小(lg V)的增大呈极显著的增加(P<0.001),繁殖阈值介于1.8682.006 g。随着土壤相对湿度的增加,繁殖分配比例极显著增大(P<0.001)。营养器官和繁殖器官生物量、头状花序重量和数量、地下生物量和地上生物量均呈极显著线性正相关关系(P<0.001),存在正向权衡。单个头状花序重量并不随个体大小和头状花序数量的增加而发生显著变化(P>0.05),且在不同土壤相对湿度和不同部位间均无显著差异(P>0.05)。由此可见,猪毛蒿在异质生境下产生的可塑性是其生存繁殖的重要反应机制之一。
英文摘要	Artemisia scoparia is a herbaceous plant of the composite family and a widely distributed species with a high degree of adaptability. The phenotypic plasticity of A. scoparia in different levels of relative soil humidity was addressed in this paper, which has important ecological significance for revealing survival adaptation strategies of A. scoparia in heterogeneous habitats. The results showed that plant height, stem diameter, root length, root weight, and biomass all showed an increasing trend with an increase in soil relative humidity; these factors exhibited strong plasticity across the soil water heterogeneous habitat, whereas the root/shoot ratio showed no change. The order of the biomass of different parts was: upper part < middle part < lower part, and the lower part was significantly heavier than the upper part (P<0.05). The number and weight of the head inflorescence in the high soil relative humidity (>40%) habitat were significantly greater than that in the lower soil relative humidity (<30% and 30%40%) habitats. The absolute input of reproductive organs (lg R) increased with the increase of individual size (lg V) and showed a significant positive correlation (P<0.001). The reproductive threshold was between 1. 8682.006 g. With the increase of soil relative humidity, the proportion of reproductive allocation was significantly increased (P<0.001). There were significant positive linear correlations between vegetative organs and reproductive organs,weight,number of the head inflorescences,and underground and aboveground biomass (P<0.001). This indicated that there were positive trade-offs between each pair. However, the weight of a single head inflorescence did not change significantly with the increase of individual size or the number of head inflorescences (P> 0.05),and there were no significant differences in the different soil relative humidity habitats and for the different parts of the plant (P>0.05). The phenotypic plasticity of A. scoparia in the heterogeneous environment of soil water is one of the important mechanisms for its survival and reproduction.
中文关键词	荒漠草原 ; 猪毛蒿 ; 表型可塑性 ; 异质生境 ; 影响
英文关键词	desert steppe A. scoparia phenotypic plasticity heterogeneous habitats effect
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:6504080
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239441
作者单位	1.宁夏大学;;宁夏大学, 西北退化生态系统恢复与重建教育部重点实验室;;西北土地退化与生态恢复国家重点实验室培育基地, 银川;;银川, ;; 750021;;750021; 2.Biostatistics Department, Pennsylvania State University, Hershey, 17033; 3.宁夏大学农学院, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	陈林,苏莹,李月飞,等. 荒漠草原土壤相对湿度对猪毛蒿表型可塑性的影响[J]. 宁夏大学,2019,39(10):3547-3556.
APA	陈林.,苏莹.,李月飞.,杨丽娜.,王磊.,...&陈娟.(2019).荒漠草原土壤相对湿度对猪毛蒿表型可塑性的影响.生态学报,39(10),3547-3556.
MLA	陈林,et al."荒漠草原土壤相对湿度对猪毛蒿表型可塑性的影响".生态学报 39.10(2019):3547-3556.