干旱区生态环境知识资源中心(Arid): The Higher Water Absorption Capacity of Small Root System Improved the Yield and Water Use Efficiency of Maize

Arid

DOI	10.3390/plants11172300
	The Higher Water Absorption Capacity of Small Root System Improved the Yield and Water Use Efficiency of Maize
	Yan, Minfei; Zhang, Li; Ren, Yuanyuan; Zhang, Tingting; Zhang, Shaowei; Li, Hongbing; Chen, Yinglong; Zhang, Suiqi
通讯作者	Zhang, SQ
来源期刊	PLANTS-BASEL
ISSN	2223-7747
出版年	2022
卷号	11 期号:17
英文摘要	The root system in plants absorbs water and minerals. However, the relationship among root size, yield, and water use efficiency (WUE) is controversial. Two pot experiments were conducted to explore these relationships by using two maize varieties with contrasting root sizes and reducing the root-shoot ratio (R/S) through root pruning to eliminate genotypic effects. Maize plants were grown in an open rainout shelter under both water-sufficient and deficient conditions. Yield-related parameters, root hydraulic conductivity (Lpr), and WUE were determined. The results showed that the small root variety (XY) has a higher yield and WUE compared to large root variety (QL) under both soil moisture conditions, likely related to the higher Lpr of XY. XY also had a higher leaf water potential than QL under drought stress, indicating that small root system could provide enough water to the shoot. Further pot experiment showed that both small and large root pruning on QL (cut off about 1/5 roots, RP1; and cut off about 1/3 roots, RP2, respectively) improved WUE and Lpr, and the RP1 yield increased by 12.9% compared to the control under well-watered conditions. Root pruning decreased transpiration and increased photosynthesis. Thus, this study reveals that it is possible to increase water absorption, yield, and WUE by reducing R/S in modern maize varieties, which may be important for the future breeding of new cultivars suitable for arid regions.
英文关键词	leaf water potential root hydraulic conductivity root size water use efficiency yield
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000851763700001
WOS关键词	HYDRAULIC CONDUCTIVITY ; GRAIN-YIELD ; WHEAT ; GROWTH ; LEAF ; TRANSPIRATION ; CONDUCTANCE ; TRAITS ; PLANTS
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/2XILL650/394001
推荐引用方式 GB/T 7714	Yan, Minfei,Zhang, Li,Ren, Yuanyuan,et al. The Higher Water Absorption Capacity of Small Root System Improved the Yield and Water Use Efficiency of Maize[J],2022,11(17).
APA	Yan, Minfei.,Zhang, Li.,Ren, Yuanyuan.,Zhang, Tingting.,Zhang, Shaowei.,...&Zhang, Suiqi.(2022).The Higher Water Absorption Capacity of Small Root System Improved the Yield and Water Use Efficiency of Maize.PLANTS-BASEL,11(17).
MLA	Yan, Minfei,et al."The Higher Water Absorption Capacity of Small Root System Improved the Yield and Water Use Efficiency of Maize".PLANTS-BASEL 11.17(2022).