Hydraulic conductivity of whole root system is better than hydraulic conductivity of single root in correlation with the leaf water status of maize

ISWC OpenIR > 水保所知识产出(1956---)

	Hydraulic conductivity of whole root system is better than hydraulic conductivity of single root in correlation with the leaf water status of maize
	Mu ZX; Zhang SQ; Zhang LS; Zhang, SQ
	2006
发表期刊	BOTANICAL STUDIES
卷号	47 期号:2 页码:145-151
摘要	Under hydroponic culture conditions, we studied the relationship between two different types of root hydraulic conductivity of maize (Zea mays L.) and its leaf water status. The results have proved the inaccuracy of the single root hydraulic conductivity (Lp(sr)) to describe the ability of water uptake by maize roots, which can be better described by the whole root systems hydraulic conductivity (Lp(wr)). Moreover, Lp(wr) can be measured easier. Although the whole roots surface area (WRA), which integrated all the root characters, such as root dry weight, volume and length, represent the interaction between root and soil (or water in soil solutions) better, there is no significant relationship between WRA and Lp(wr), and leaf water potential because part of the roots has no activity for water uptake. However, active root surface area (ARA) truly reflects the level of root metabolic activity and root function efficiency, i.e., the ratio of the active roots to the whole roots. Hence, ARA has a significant linear correlation with Lp(wr). Because of the high plasticity of plant root systems architecture and metabolism under changed water and nutrition conditions, the relationship between single root Lp(sr) and whole root Lp(wr) and between WRA and ARA are not positively linear correlated. Results demonstrate that the whole root Lp(wr) described by ARA can reflect more accurately both the water uptake by plant roots and the leaf water status than the single root Lp(sr).
关键词	Active Root Surface Area (Ara) Maize Single Root Hydraulic Conductivity (Lp(Sr)) Water Channels (Aquaporins) Whole Root Surface Area (Wra) Whole Root Systems Hydraulic Conductivity (Lp(Wr))
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4902
专题	水保所知识产出(1956---)
通讯作者	Zhang, SQ
推荐引用方式 GB/T 7714	Mu ZX,Zhang SQ,Zhang LS,et al. Hydraulic conductivity of whole root system is better than hydraulic conductivity of single root in correlation with the leaf water status of maize[J]. BOTANICAL STUDIES,2006,47(2):145-151.
APA	Mu ZX,Zhang SQ,Zhang LS,&Zhang, SQ.(2006).Hydraulic conductivity of whole root system is better than hydraulic conductivity of single root in correlation with the leaf water status of maize.BOTANICAL STUDIES,47(2),145-151.
MLA	Mu ZX,et al."Hydraulic conductivity of whole root system is better than hydraulic conductivity of single root in correlation with the leaf water status of maize".BOTANICAL STUDIES 47.2(2006):145-151.