Large-Scale Evaluation of Maize Germplasm for Low-Phosphorus Tolerance

doi:10.1371/journal.pone.0124212

	Large-Scale Evaluation of Maize Germplasm for Low-Phosphorus Tolerance
	Zhang, Hongwei 1; Xu, Ruineng 2,3; Xie, Chuanxiao 1; Huang, Changling 1; Liao, Hong 2,3; Xu, Yunbi 1,4; Wang, Jinxiang 2,3; Li, Wen-Xue 1
刊名	PLOS ONE
	2015
卷号	10 期号:5 页码:-
ISSN号	1932-6203
DOI	10.1371/journal.pone.0124212
通讯作者	Zhang, Hongwei
英文摘要	Low-phosphorus (LP) stress is a global problem for maize production and has been exacerbated by breeding activities that have reduced the genetic diversity of maize. Although LP tolerance in maize has been previously evaluated, the evaluations were generally performed with only a small number of accessions or with samples collected from a limited area. In this research, 826 maize accessions (including 580 tropical/subtropical accessions and 246 temperate accessions) were evaluated for LP tolerance under field conditions in 2011 and 2012. Plant height (PH) and leaf number were measured at three growth stages. The normalized difference vegetation index (NDVI) and fresh ear weight (FEW) were also measured. Genetic correlation analysis revealed that FEW and NDVI were strongly correlated with PH, especially at later stages. LP-tolerant and -sensitive accessions were selected based on the relative trait values of all traits using principal component analysis, and all the 14 traits of the tolerant maize accessions showed less reduction than the sensitive accessions under LP conditions. LP tolerance was strongly correlated with agronomic performance under LP stress conditions, and both criteria could be used for genetic analysis and breeding of LP tolerance. Temperate accessions showed slightly better LP tolerance than tropical/subtropical ones, although more tolerant accessions were identified from tropical/subtropical accessions, which could be contributed by their larger sample size. This large-scale evaluation provides useful information, LP-tolerant germplasm resources and evaluation protocol for genetic analysis and developing maize varieties for LP tolerance.
学科主题	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000353943000021
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/4715]
专题	作物科学研究所_分子生物学系
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing, Peoples R China 2.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou, Guangdong, Peoples R China 3.South China Agr Univ, Coll Agron, Root Biol Ctr, Guangzhou, Guangdong, Peoples R China 4.Int Maize & Wheat Improvement Ctr CIMMYT, El Batan, Texcoco, Mexico
推荐引用方式 GB/T 7714	Zhang, Hongwei,Xu, Ruineng,Xie, Chuanxiao,et al. Large-Scale Evaluation of Maize Germplasm for Low-Phosphorus Tolerance[J]. PLOS ONE,2015,10(5):-.
APA	Zhang, Hongwei.,Xu, Ruineng.,Xie, Chuanxiao.,Huang, Changling.,Liao, Hong.,...&Li, Wen-Xue.(2015).Large-Scale Evaluation of Maize Germplasm for Low-Phosphorus Tolerance.PLOS ONE,10(5),-.
MLA	Zhang, Hongwei,et al."Large-Scale Evaluation of Maize Germplasm for Low-Phosphorus Tolerance".PLOS ONE 10.5(2015):-.