Large-scale screening for maize drought resistance using multiple selection criteria evaluated under water-stressed and well-watered environments

doi:10.1016/j.fcr.2011.06.003

	Large-scale screening for maize drought resistance using multiple selection criteria evaluated under water-stressed and well-watered environments
	Lu, Yanli 2,3; Hao, Zhuanfang 1; Xie, Chuanxiao 1; Crossa, Jose 2; Araus, Jose-Luis 2; Gao, Shibin 3; Vivek, Bindiganavile S.4; Magorokosho, Cosmos 5; Mugo, Stephen 6; Makumbi, Dan 6
刊名	FIELD CROPS RESEARCH
	2011
卷号	124 期号:1 页码:37-45
关键词	Maize Drought resistance Selection criteria Germplasm evaluation Normalized difference vegetation index (NDVI)
ISSN号	0378-4290
DOI	10.1016/j.fcr.2011.06.003
通讯作者	Lu, Yanli
英文摘要	A total of 550 maize inbred lines collected from global breeding programs were evaluated for drought resistance under both well-watered and water-stressed environments. The evaluation was based on multiple measurements of biomass taken before and after the drought stress was applied using the normalized difference vegetation index (NDVI), along with other selection criteria including anthesis-silking interval, leaf senescence, chlorophyll content, root capacitance, final grain yield, and grain yield components. Kernel weight was the most stable trait under drought stress. Correlations between the primary trait (grain yield) and the secondary traits, except the root capacitance and ASI under water-stressed condition, were all significant. Root capacitance had relatively low heritability and low genetic correlation with other drought resistance criteria, and is not recommended as a drought resistance criterion. Significant reduction of NDVI values measured in the afternoon when the leaves became rolling, compared to those measured in the morning when the leaves were open, provides a reliable index for leaf rolling, which however was not significantly correlated with grain yield. NDVIs measured across different developmental stages were highly correlated with each other and with most of the secondary traits as well as, grain yield, indicating that NDVI can be used as a secondary trait for large-scale drought resistance screening. Regression models built based on non-yield drought criteria and yield components explained about 40% and 95% of the variation for the grain yield, respectively. Some maize lines developed in China for temperate regions showed strong drought resistance comparable to tropical maize lines when tested under tropical condition, indicating that temperate lines with a wide adaptability can be used in drought resistance breeding for both temperate and tropical environments. (C) 2011 Elsevier B.V. All rights reserved.
学科主题	Agronomy ; AGRONOMY
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000296595800004
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5260]
专题	作物科学研究所_遗传育种系
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Genet Resources & Improvement, Beijing 100081, Peoples R China 2.Int Maize & Wheat Improvement Ctr CIMMYT, Global Maize Program, El Batan, Texcoco, Mexico 3.Sichuan Agr Univ, Maize Res Inst, Wenjiang 611130, Sichuan, Peoples R China 4.Int Crops Res Inst Semi Arid Trop, CIMMYT Int, Greater Hyderabad 502324, AP, India 5.CIMMYT, Harare, Zimbabwe 6.CIMMYT, Nairobi 00621, Kenya 7.Chinese Acad Agr Sci, Natl Key Facil Crop Genet Resources & Improvement, Inst Crop Sci CIMMYT, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Lu, Yanli,Hao, Zhuanfang,Xie, Chuanxiao,et al. Large-scale screening for maize drought resistance using multiple selection criteria evaluated under water-stressed and well-watered environments[J]. FIELD CROPS RESEARCH,2011,124(1):37-45.
APA	Lu, Yanli.,Hao, Zhuanfang.,Xie, Chuanxiao.,Crossa, Jose.,Araus, Jose-Luis.,...&Xu, Yunbi.(2011).Large-scale screening for maize drought resistance using multiple selection criteria evaluated under water-stressed and well-watered environments.FIELD CROPS RESEARCH,124(1),37-45.
MLA	Lu, Yanli,et al."Large-scale screening for maize drought resistance using multiple selection criteria evaluated under water-stressed and well-watered environments".FIELD CROPS RESEARCH 124.1(2011):37-45.