干旱区生态环境知识资源中心(Arid): Wheat cultivars with small root length density in the topsoil increased post-anthesis water use and grain yield in the semi-arid region on the Loess Plateau

Arid

DOI	10.1016/j.eja.2021.126243
	Wheat cultivars with small root length density in the topsoil increased post-anthesis water use and grain yield in the semi-arid region on the Loess Plateau
	Fang, Yan; Liang, Liyan; Liu, Shuo; Xu, Bingcheng; Siddique, Kadambot Hm; Palta, Jairo A.; Chen, Yinglong
通讯作者	Chen, YL (corresponding author), Univ Western Australia, UWA Inst Agr, Perth, WA 6001, Australia. ; Chen, YL (corresponding author), Univ Western Australia, Sch Agr & Environm, Perth, WA 6001, Australia. ; Chen, YL (corresponding author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2021
卷号	124
英文摘要	Large distribution of roots in topsoil layers allow more uptake of soil water and nutrients during the vegetative growth, but it may be disadvantageous if soil water deficit develops during the reproductive stage. The relationship between the distribution of roots in topsoil (0-0.4 m) and soil water use, dry matter and nitrogen (N) accumulations, and grain yield was examined in winter wheat (Triticum aestivum L.) with contrasting root size in the topsoil. Two old landraces (CW134 and JM47, larger root length and biomass in the topsoil) and two modern wheat cultivars (CH58 and LH7, smaller root system size in the topsoil), were grown in the field during two seasons (2016-2017 and 2017-2018) under rainfed and irrigation conditions in the semi-arid farmland on the Loess Plateau. Root biomass and root length density (RLD) in topsoil (0-0.4 m) was significantly higher in the old landraces than in the modern cultivars (P < 0.05) under rainfed and irrigation in both seasons (no such difference in subsoil, 0.4-1.0 m). The modern cultivars had significantly higher grain yield, grain N concentration, wateruse efficiency (WUE), and 1000-grain weight (P < 0.05). Seasonal water use was similar among all cultivars, but post-anthesis water use was higher in the modern cultivars, particularly under rainfed conditions in both seasons. Root biomass and RLD in the topsoil was positively correlated with pre-anthesis water use, but negatively correlated with after anthesis water use. Post-anthesis water use was closely related to post-anthesis dry matter, N accumulation, yield and WUE under rainfed conditions. To conclude, large distribution of mots in the topsoil had non-advantage for wheat grown under rainfed conditions. The small distribution of roots in the topsoil (characteristics of modern wheat cultivars) enhanced post-anthesis water use, increased post-anthesis dry matter and N accumulation, and hence attained higher grain yield and grain N when grown in the semi-arid environment.
英文关键词	Triticum aestivum Root system size Topsoil layer Post-anthesis dry matter accumulation N uptake
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620809100005
WOS类目	Agronomy
WOS研究方向	Agriculture
来源机构	西北农林科技大学 ; Commonwealth Scientific and Industrial Research Organisation ; University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350193
作者单位	[Fang, Yan; Liang, Liyan; Liu, Shuo; Xu, Bingcheng; Chen, Yinglong] Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Fang, Yan; Liang, Liyan; Liu, Shuo; Xu, Bingcheng; Chen, Yinglong] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; [Siddique, Kadambot Hm; Palta, Jairo A.; Chen, Yinglong] Univ Western Australia, UWA Inst Agr, Perth, WA 6001, Australia; [Siddique, Kadambot Hm; Palta, Jairo A.; Chen, Yinglong] Univ Western Australia, Sch Agr & Environm, Perth, WA 6001, Australia; [Palta, Jairo A.] CSIRO Agr & Food, Private Bag 5, Wembley, WA 6913, Australia
推荐引用方式 GB/T 7714	Fang, Yan,Liang, Liyan,Liu, Shuo,et al. Wheat cultivars with small root length density in the topsoil increased post-anthesis water use and grain yield in the semi-arid region on the Loess Plateau[J]. 西北农林科技大学, Commonwealth Scientific and Industrial Research Organisation, University of Western Australia,2021,124.
APA	Fang, Yan.,Liang, Liyan.,Liu, Shuo.,Xu, Bingcheng.,Siddique, Kadambot Hm.,...&Chen, Yinglong.(2021).Wheat cultivars with small root length density in the topsoil increased post-anthesis water use and grain yield in the semi-arid region on the Loess Plateau.EUROPEAN JOURNAL OF AGRONOMY,124.
MLA	Fang, Yan,et al."Wheat cultivars with small root length density in the topsoil increased post-anthesis water use and grain yield in the semi-arid region on the Loess Plateau".EUROPEAN JOURNAL OF AGRONOMY 124(2021).