气候变化领域集成服务门户(CCPortal): No post-drought compensatory growth of corns with root cutting based on cytokinin induced by roots

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DOI	10.1016/j.agwat.2018.04.035
	No post-drought compensatory growth of corns with root cutting based on cytokinin induced by roots
	Wang, Xiao-Ling; Qin, Rong-Rong; Sun, Run-Hong; Wang, Jing-Jing; Hou, Xiao-Gai; Qi, Lin; Shi, Jiang; Li, Xue-Lin; Zhang, You-Fu; Dong, Pu-Hui; Zhang, Li-Xia; Qin, De-Hua
发表日期	2018
ISSN	0378-3774
起始页码	9
结束页码	20
卷号	205
英文摘要	The effect of shallow and deep roots on compensatory growth of potted corn seedlings during post-drought rewatering was investigated on the basis of leaf cytokinin induced by roots. Two treatment conditions, namely, root cutting and nitrate (NO3-) addition, were used in the study. Results showed that drought stress retained corn growth. In the absence of root cutting, rewatering increased the net photosynthetic rates of corn and induced compensatory growth. However, under root cutting, no compensatory growth occurred in the rewatered corns. In the absence of root cutting, significantly higher zeatin riboside (ZR) concentrations in the leaves and xylem saps were recorded under rewatering treatment than under wet treatment. However, these results were not observed under root cutting owing to loss of deep roots. Furthermore, corns with deep roots added with NO3- showed significantly higher ZR concentration in the leaves and xylem saps than those with shallow roots added with NO3-. High leaf cytokinin concentration is known to induce rapid corn growth. Thus, no compensatory growth occurred during post-drought rewatering in corns with few deep roots, likely due to lack of leaf cytokinin enhancement induced by deep roots.
英文关键词	Corn; Cytokinin; Compensatory growth during post-drought; rewatering; Seedling stage; Root cutting; Deep roots
WOS研究方向	Agriculture ; Water Resources
WOS类目	Agronomy ; Water Resources
来源期刊	AGRICULTURAL WATER MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158521
作者单位	Hou, XG (corresponding author), Henan Univ Sci & Technol, Coll Agron, Luoyang 471003, Henan, Peoples R China.
推荐引用方式 GB/T 7714	Wang, Xiao-Ling,Qin, Rong-Rong,Sun, Run-Hong,et al. No post-drought compensatory growth of corns with root cutting based on cytokinin induced by roots[J],2018,205.
APA	Wang, Xiao-Ling.,Qin, Rong-Rong.,Sun, Run-Hong.,Wang, Jing-Jing.,Hou, Xiao-Gai.,...&Qin, De-Hua.(2018).No post-drought compensatory growth of corns with root cutting based on cytokinin induced by roots.AGRICULTURAL WATER MANAGEMENT,205.
MLA	Wang, Xiao-Ling,et al."No post-drought compensatory growth of corns with root cutting based on cytokinin induced by roots".AGRICULTURAL WATER MANAGEMENT 205(2018).