000 04040nab|a22005057a|4500
999 _c59907
_d59899
001 59907
003 MX-TxCIM
005 20240919021003.0
008 190115s2019||||gw |||p|op||||00||0|eng|d
024 8 _ahttps://doi.org/10.1007/s00122-018-3206-3
040 _aMX-TxCIM
041 _aeng
100 1 _aJULIANA P.
_8001710082
_gFormerly ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Global Wheat Program
_gFormerly BISA
_92690
245 1 _aIntegrating genomic-enabled prediction and high-throughput phenotyping in breeding for climate-resilient bread wheat
_h[Electronic Resource]
260 _aGermany :
_bSpringer,
_c2019.
500 _aPeer review
500 _aOpen Access
520 _aGenomic selection and high-throughput phenotyping (HTP) are promising tools to accelerate breeding gains for high-yielding and climate-resilient wheat varieties. Hence, our objective was to evaluate them for predicting grain yield (GY) in drought-stressed (DS) and late-sown heat-stressed (HS) environments of the International maize and wheat improvement center?s elite yield trial nurseries. We observed that the average genomic prediction accuracies using fivefold cross-validations were 0.50 and 0.51 in the DS and HS environments, respectively. However, when a different nursery/year was used to predict another nursery/year, the average genomic prediction accuracies in the DS and HS environments decreased to 0.18 and 0.23, respectively. While genomic predictions clearly outperformed pedigree-based predictions across nurseries, they were similar to pedigree-based predictions within nurseries due to small family sizes. In populations with some full-sibs in the training population, the genomic and pedigree-based prediction accuracies were on average 0.27 and 0.35 higher than the accuracies in populations with only one progeny per cross, indicating the importance of genetic relatedness between the training and validation populations for good predictions. We also evaluated the item-based collaborative filtering approach for multivariate prediction of GY using the green normalized difference vegetation index from HTP. This approach proved to be the best strategy for across-nursery predictions, with average accuracies of 0.56 and 0.62 in the DS and HS environments, respectively. We conclude that GY is a challenging trait for across-year predictions, but GS and HTP can be integrated in increasing the size of populations screened and evaluating unphenotyped large nurseries for stress?resilience within years.
526 _aWC
_cFP3
546 _aText in English
591 _aGonzalez-Perez, L. : Not in IRS Staff list but CIMMYT Affiliation
650 7 _2AGROVOC
_91132
_aGenomics
650 7 _2AGROVOC
_93634
_aPhenotypes
650 7 _aBreeding
_gAGROVOC
_2
_91029
650 7 _2AGROVOC
_91048
_aClimatic factors
650 7 _91265
_aSoft wheat
_2AGROVOC
650 7 _2AGROVOC
_91045
_aClimate change
650 7 _2AGROVOC
_95030
_aResilience
700 1 _aMontesinos-Lopez, O.A.
_92700
700 1 _aCrossa, J.
_gGenetic Resources Program
_8CCJL01
_959
700 1 _aMondal, S.
_gFormerly Global Wheat Program
_8INT3211
_9904
700 1 _93850
_aGonzalez-Perez, L.
700 1 _92092
_aPoland, J.A.
700 1 _aHuerta-Espino, J.
_gGlobal Wheat Program
_8CHUE01
_9397
700 1 _92608
_aCrespo-Herrera, L.A.
_gGlobal Wheat Program
_8I1706538
700 1 _aVelu, G.
_8INT2983
_9880
_gGlobal Wheat Program
700 1 _9851
_aDreisigacker, S.
_gGlobal Wheat Program
_8INT2692
700 1 _aShrestha, S.
_98259
700 1 _92703
_aPerez-Rodriguez, P.
700 1 _aPinto Espinosa, F.
_8I1707012
_gFormerly Global Wheat Program
_94431
700 1 _aSingh, R.P.
_gGlobal Wheat Program
_8INT0610
_9825
773 0 _dGermany
_gv. 132, no. 1, p. 177-194
_tTheoretical and Applied Genetics
_wu444762
_x1432-2242
856 4 _uhttps://hdl.handle.net/10883/19787
_yOpen Access through DSpace
942 _cJA
_2ddc
_n0