000 02892nab a22004337a 4500
001 G90417
003 MX-TxCIM
005 20240919020946.0
008 210927s2008 xxk|||p|op||| 00| 0 eng d
022 _a1439-0523 (Online)
022 _a0179-9541
024 8 _ahttps://doi.org/10.1111/j.1439-0523.2007.01484.x
040 _aMX-TxCIM
041 _aeng
090 _aCIS-5273
100 1 _aOrtiz, R.
_9244
245 1 0 _aCombining ability and heterosis under pest epidemics in a broad-based global wheat-breeding population
260 _aUnited Kingdom :
_bWiley,
_c2008.
340 _aComputer File|Printed
500 _aPeer review
500 _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0179-9541
520 _aWheat breeders rarely apply population improvement schemes or select parental sources according to combining ability and heterotic patterns. They rely on pedigree selection methods for breeding new cultivars. This experiment was undertaken to assess the advantages of using diallel crosses to define combining ability and understand heterosis in a broad-based wheat-breeding population across different environments affected by yellow rust. Sixty-four genotypes derived from a full diallel mating scheme were assessed for grain yield in two contrasting growing seasons at two locations for two consecutive years. Parental genotypes showed significant combining ability for grain yield that was affected by yellow rust and genotype-by-environment (GE) interactions, both of which affected heterosis for grain yield. Significant GE interactions suggested that decentralized selection for specific environments could maximize the use of this wheat germplasm. Cultivar effects and specific heterosis were the most important factors influencing grain yield. Some crosses capitalized on additive genetic variation for grain yield. This research shows the power of available quantitative breeding tools to help breeders choose parental sources in a population improvement programme.
536 _aGenetic Resources Program
546 _aText in English
591 _aJohn Wiley
594 _aCCJL01
650 7 _91296
_aTriticum aestivum
_2AGROVOC
650 7 _94687
_aDiallel analysis
_2AGROVOC
650 7 _91133
_aGenotype environment interaction
_2AGROVOC
650 7 _91233
_aQuantitative genetics
_2AGROVOC
650 7 _91251
_aRusts
_2AGROVOC
700 1 _aWagoire, W.W.
_923349
700 1 _aStolen, O.
_9324
700 1 _aAlvarado Beltrán, G.
_8N1202289
_91935
_gGenetic Resources Program
700 1 _aCrossa, J.
_gGenetic Resources Program
_8CCJL01
_959
773 0 _tPlant Breeding
_n635171
_gv. 127, no. 3, p. 222-227
_dUnited Kingdom : Wiley, 2008.
_wG445212
_x1439-0523
856 4 _yAccess only for CIMMYT Staff
_uhttps://hdl.handle.net/20.500.12665/1477
942 _cJA
_2ddc
_n0
999 _c26982
_d26982