Soil Moisture Availability at Early Growth Stages Strongly Affected Root Growth of Bothriochloa ischaemum When Mixed With Lespedeza davurica

doi:10.3389/fpls.2018.01050

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	Soil Moisture Availability at Early Growth Stages Strongly Affected Root Growth of Bothriochloa ischaemum When Mixed With Lespedeza davurica
	Xu, BC (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Xu, BC (reprint author), Minist Water Resources, Yangling, Shaanxi, Peoples R China.; Zhi Wang 2,3; Weizhou Xu 1; Zhifei Chen 2; Zhao Jia 2; Jin Huang 2,3; Zhongming Wen 2,3; Yinglong Chen 2,3; Bingcheng Xu 2,3
刊名	FRONTIERS IN PLANT SCIENCE
	2018
卷号	9
关键词	Rewatering Root Morphology Growth Stage Total Root Length Root Surface Area Mixture Ratio
ISSN号	1664-462X
DOI	10.3389/fpls.2018.01050
文献子类	Article
英文摘要	Rainfall is the main resource of soil moisture in the semiarid areas, and the altered rainfall pattern would greatly affect plant growth and development. Root morphological traits are critical for plant adaptation to changeable soil moisture. This study aimed to clarify how root morphological traits of Bothriochloa ischaemum (a C-4 herbaceous species) and Lespedeza davurica (a C-3 leguminous species) in response to variable soil moisture in their mixtures. The two species were co-cultivated in pots at seven mixture ratios under three soil water regimes [80% (HW), 60% (MW), and 40% (LW) of soil moisture field capacity (FC)]. At the jointing, flowering, and filling stages of B. ischaemum, the LW and MW treatments were rewatered to MW or HW, respectively. At the end of growth season, root morphological traits of two species were evaluated. Results showed that the root morphological response of B. ischaemum was more sensitive than that of L. davurica under rewatering. The total root length (TRL) and root surface area (RSA) of both species increased as their mixture ratio decreased, which suggested that mixed plantation of the two species would be beneficial for their own root growth. Among all treatments, the increase of root biomass (RB), TRL, and RSA reached the highest levels when soil water content increased from 40 to 80% FC at the jointing stage. Our results implied that species-specific response in root morphological traits to alternated rainfall pattern would greatly affect community structure, and large rainfall occurring at early growth stages would greatly increase their root growth in the semiarid environments.
学科主题	Plant Sciences
出版地	AVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE, CH-1015, SWITZERLAND
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000440984400001
资助机构	National Key Research and Development Program of China [2016YFC0501703] ; National Key Research and Development Program of China [2016YFC0501703] ; National Natural Science Foundation of China [41701602] ; National Natural Science Foundation of China [41701602] ; Key cultivation project of Chinese Academy of Sciences ; Key cultivation project of Chinese Academy of Sciences ; National Key Research and Development Program of China [2016YFC0501703] ; National Key Research and Development Program of China [2016YFC0501703] ; National Natural Science Foundation of China [41701602] ; National Natural Science Foundation of China [41701602] ; Key cultivation project of Chinese Academy of Sciences ; Key cultivation project of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/8195]
专题	水保所科研产出--SCI_2018--SCI
通讯作者	Xu, BC (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Xu, BC (reprint author), Minist Water Resources, Yangling, Shaanxi, Peoples R China.; Xu, BC (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China.
作者单位	1.Yulin Univ, Coll Life Sci, Yulin, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 4.Minist Water Resources, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Xu, BC ,Xu, BC ,Zhi Wang,et al. Soil Moisture Availability at Early Growth Stages Strongly Affected Root Growth of Bothriochloa ischaemum When Mixed With Lespedeza davurica[J]. FRONTIERS IN PLANT SCIENCE,2018,9.
APA	Xu, BC .,Xu, BC .,Zhi Wang.,Weizhou Xu.,Zhifei Chen.,...&Xu, BC .(2018).Soil Moisture Availability at Early Growth Stages Strongly Affected Root Growth of Bothriochloa ischaemum When Mixed With Lespedeza davurica.FRONTIERS IN PLANT SCIENCE,9.
MLA	Xu, BC ,et al."Soil Moisture Availability at Early Growth Stages Strongly Affected Root Growth of Bothriochloa ischaemum When Mixed With Lespedeza davurica".FRONTIERS IN PLANT SCIENCE 9(2018).