000			03439nab|a22003617a|4500
999			_c62976 _d62968
001			62976
003			MX-TxCIM
005			20230731172210.0
008			201710s2017||||xxu|||p|op||||00||0|eng|d
022			_a1932-6203 (Online)
024	8		_ahttps://doi.org/10.1371/journal.pone.0185983
040			_aMX-TxCIM
041			_aeng
100	1		_aHonsdorf, N. _8I1706539 _96513 _gSustainable Intensification Program
245	1	0	_aQTL controlling grain filling under terminal drought stress in a set of wild barley introgression lines
260			_aSan Francisco, CA (USA) : _bPublic Library of Science, _c2017.
500			_aPeer review
500			_aOpen Access
520			_aDrought is a major abiotic stress impeding the yield of cereal crops globally. Particularly in Mediterranean environments, water becomes a limiting factor during the reproductive developmental stage, causing yield losses. The wild progenitor of cultivated barley Hordeum vulgare ssp spontaneum (Hsp) is a potentially useful source of drought tolerance alleles. Wild barley introgression lines like the S42IL library may facilitate the introduction of favorable exotic alleles into breeding material. The complete set of 83 S42ILs was genotyped with the barley 9k iSelect platform in order to complete genetic information obtained in previous studies. The new map comprises 2,487 SNPs, spanning 989.8 cM and covering 94.5% of the Hsp genome. Extent and positions of introgressions were confirmed and new information for ten additional S42ILs was collected. A subset of 49 S42ILs was evaluated for drought response in four greenhouse experiments. Plants were grown under well-watered conditions until ten days post anthesis. Subsequently drought treatment was applied by reducing the available water. Several morphological and harvest parameters were evaluated. Under drought treatment, trait performance was reduced. However, there was no interaction effect between genotype and treatment, indicating that genotypes, which performed best under control treatment, also performed best under drought treatment. In total, 40 QTL for seven traits were detected in this study. For instance, favorable Hsp effects were found for thousand grain weight (TGW) and number of grains per ear under drought stress. In particular, line S42IL-121 is a promising candidate for breeding improved malting cultivars, displaying a TGW, which was increased by 17% under terminal drought stress due to the presence of an unknown wild barley QTL allele on chromosome 4H. The introgression line showed a similar advantage in previous field experiments and in greenhouse experiments under early drought stress. We, thus, recommend using S42IL-121 in barley breeding programs to enhance terminal drought tolerance.
546			_aText in English
650		7	_aBarley _2AGROVOC _91018
650		7	_aIntrogression _2AGROVOC _98730
650		0	_aSingle nucleotide polymorphisms _gAGROVOC _910805
650		7	_aDrought _2AGROVOC _91080
650		7	_aCereal crops _2AGROVOC _96794
650		7	_aGenomics _2AGROVOC _91132
650		7	_aGenotypes _2AGROVOC _91134
700	1		_aMarch, T.J. _917484
700	1		_aPillen, K. _917485
773	0		_tPLoS ONE _gv. 12, no. 10, art. e0185983 _dSan Francisco, CA (USA) : Public Library of Science, 2017. _wu94957 _x1932-6203
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/21075
942			_cJA _n0 _2ddc