000			03005nab a22003977a 4500
999			_c57343 _d57335
001			57343
003			MX-TxCIM
005			20211006085127.0
008			160127s2015 xxu|||p|op||| 00| 0 eng d
024	8		_ahttps://doi.org/10.1371/journal.pone.0124212
040			_aMX-TxCIM
041			_aeng
100	0		_92728 _aHongwei Zhang
245	1	0	_aLarge-scale evaluation of maize germplasm for low-phosphorus tolerance
260			_aSan Francisco, CA (USA) : _bPublic Library of Science, _c2015.
500			_aPeer review
500			_aOpen Access
520			_aLow-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 FEWand 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 largescale evaluation provides useful information, LP-tolerant germplasm resources and evaluation protocol for genetic analysis and developing maize varieties for LP tolerance.
536			_aGlobal Maize Program
536			_aGenetic Resources Program
546			_aText in english
594			_aINT2735
594			_aINT2542
650		7	_aMaize _gAGROVOC _2 _91173
650		7	_aGermplasm _gAGROVOC _2 _91136
700	0		_92729 _aRuineng Xu
700	0		_92730 _aChuanxiao Xie
700	0		_92731 _aChangling Huang
700	0		_92732 _aHong Liao
700	0		_92733 _aWen-Xue Li
700	1		_9842 _aJiankang Wang _gGenetic Resources Program _8INT2542
700	1		_9857 _aYunbi Xu _gGlobal Maize Program _8INT2735
773	0		_wu94957 _dSan Francisco, CA (USA) : Public Library of Science _tPLoS One _gv. 10, no. 5, e0124212.
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/19752
942			_2ddc _cJA _n0