000			03455nab a22004937a 4500
001			G95390
003			MX-TxCIM
005			20230731172209.0
008			210621s2012 ne |||p|op||| 00| 0 eng d
022			_a1572-9788 (Online)
022			_a1380-3743
024	8		_ahttps://doi.org/10.1007/s11032-011-9631-5
040			_aMX-TxCIM
041			_aeng
090			_aCIS-6363
100	0		_aYanli Lu _96408
245	1	0	_aComparative LD mapping using single SNPs and haplotypes identifies QTL for plant height and biomass as secondary traits of drought tolerance in maize
260			_aDordrecht (Netherlands) : _bSpringer, _c2012.
500			_aPeer review
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=1380-3743
520			_aDrought often delays developmental events so that plant height and above-ground biomass are reduced, resulting in yield loss due to inadequate photosynthate. In this study, plant height and biomass measured by the Normalized Difference Vegetation Index (NDVI) were used as criteria for drought tolerance. A total of 305 lines representing temperate, tropical and subtropical maize germplasm were genotyped using two single nucleotide polymorphism (SNP) chips each containing 1536 markers, from which 2052 informative SNPs and 386 haplotypes each constructed with two or more SNPs were used for linkage disequilibrium (LD) or association mapping. Single SNP- and haplotype-based LD mapping identified two significant SNPs and three haplotype loci [a total of four quantitative trait loci (QTL)] for plant height under well-watered and water-stressed conditions. For biomass, 32 SNPs and 12 haplotype loci (30 QTL) were identified using NDVIs measured at seven stages under the two water regimes. Some significant SNP and haplotype loci for NDVI were shared by different stages. Comparing significant loci identified by single SNP- and haplotype-based LD mapping, we found that six out of the 14 chromosomal regions defined by haplotype loci each included at least one significant SNP for the same trait. Significant SNP haplotype loci explained much higher phenotypic variation than individual SNPs. Moreover, we found that two significant SNPs (two QTL) and one haplotype locus were shared by plant height and NDVI. The results indicate the power of comparative LD mapping using single SNPs and SNP haplotypes with QTL shared by plant height and biomass as secondary traits for drought tolerance in maize.
536			_aGlobal Maize Program
546			_aText in English
591			_aCIMMYT Informa No. 1767
594			_aINT2735
595			_aCSC
650		7	_91173 _aMaize _2AGROVOC
650		7	_91082 _aDrought tolerance _2AGROVOC
650		7	_91897 _aBiomass _2AGROVOC
650		0	_aSingle nucleotide polymorphisms _gAGROVOC _910805
700	0		_96518 _aJie Xu
700	0		_920482 _aZhimin Yuan
700	0		_98385 _aZhuanfang Hao
700	0		_92730 _aChuanxiao Xie
700	0		_94207 _aXinhai Li
700	1		_917711 _aShah, T.
700	0		_96533 _aHai Lan
700	0		_96604 _aShihuang Zhang
700	0		_96522 _aTingzhao Rong
700	1		_9857 _aYunbi Xu _gGlobal Maize Program _8INT2735
773	0		_tMolecular Breeding _gv. 30, no. 1, p. 407-418 _dDordrecht (Netherlands) : Springer, 2012. _wG78961 _x1380-3743
856	4		_uhttps://hdl.handle.net/20.500.12665/540 _yAccess only for CIMMYT Staff
942			_cJA _2ddc _n0
999			_c28598 _d28598