干旱区生态环境知识资源中心(Arid): Cultivar replacement increases water use efficiency in foxtail millet in Shaanxi Province, China

Arid

DOI	10.1016/j.plaphy.2021.04.036
	Cultivar replacement increases water use efficiency in foxtail millet in Shaanxi Province, China
	Yan, Jiakun; Zhang, Ningning; Kang, Furen; Wang, Jianwu; Wang, Xiaolin
通讯作者	Yan, JK (corresponding author), Yulin Univ, Coll Life Sci, Shaanxi Key Lab Ecol Restorat Shanbei Min Area, Yulin 719000, Peoples R China.
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN	0981-9428
EISSN	1873-2690
出版年	2021
卷号	164 页码:73-81
英文摘要	Cultivar replacement-induced genetic improvement is considered an important factor in enhancing crop grain yield. However, the effect of cultivar replacement of foxtail millet, an important crop in arid and semi-arid regions, on grain yield and drought resistance has rarely been considered. In the present study, we grew five millet cultivars, representative of widely cultivated varieties released from the 1950s to the 2010s in Shaanxi Province, China, in an open rainout shelter (closed during rain events) under two contrasting water treatments (35 +/- 5% field water capacity (FWC), and 75 +/- 5% FWC) with an aim to detect yield-related parameters, biomass accumulation, water use efficiency (WUE), and plant water-related indices. The millet yield increased with cultivar replacement under normal water conditions, whereas this increase was eliminated under water stress conditions. However, WUE significantly improved under both water conditions over a decade. Correlation analysis indicated that grain yield was significantly affected by biomass, root dry weight at the flowering stage, leaf water potential, whole-plant hydraulic conductivity, root exudation, and leaf gas parameters. WUE had a significant, positive correlation with whole-plant hydraulic conductivity at the jointing stage, whereas it had a significant, negative correlation with root dry weight at harvest. Further, the newly bred cultivar had higher photosynthesis, root exudation, and whole-plant hydraulic conductivity and smaller root dry weight at harvest to hold higher grain yield and WUE. We conclude that future breeding for high-yielding and WUE millet cultivars should focus more on photosynthesis, whole-plant hydraulic conductivity, and root development.
英文关键词	Foxtail millet Grain yield Cultivar replacement Root exudation Whole-plant hydraulic conductivity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000656477500008
WOS关键词	FINE-ROOT BIOMASS ; GRAIN-YIELD ; CROP GROWTH ; WHEAT ; TRAITS ; STRESS ; BEECH
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351340
作者单位	[Yan, Jiakun; Zhang, Ningning; Kang, Furen; Wang, Jianwu; Wang, Xiaolin] Yulin Univ, Coll Life Sci, Shaanxi Key Lab Ecol Restorat Shanbei Min Area, Yulin 719000, Peoples R China
推荐引用方式 GB/T 7714	Yan, Jiakun,Zhang, Ningning,Kang, Furen,et al. Cultivar replacement increases water use efficiency in foxtail millet in Shaanxi Province, China[J],2021,164:73-81.
APA	Yan, Jiakun,Zhang, Ningning,Kang, Furen,Wang, Jianwu,&Wang, Xiaolin.(2021).Cultivar replacement increases water use efficiency in foxtail millet in Shaanxi Province, China.PLANT PHYSIOLOGY AND BIOCHEMISTRY,164,73-81.
MLA	Yan, Jiakun,et al."Cultivar replacement increases water use efficiency in foxtail millet in Shaanxi Province, China".PLANT PHYSIOLOGY AND BIOCHEMISTRY 164(2021):73-81.