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040 _aMX-TxCIM
072 0 _aA50
072 0 _aF03
082 0 4 _a631.53
_bBOO
100 1 _aLoffler, C.M.
_uBook of abstracts: Arnel R. Hallauer international symposium on plant breeding
110 0 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
111 2 _aArnel R. Hallauer International Symposium on Plant Breeding
_cMexico, D.F. (Mexico)
_d17-22 Aug 2003
245 0 0 _aClassification of maize environments using crop simulation and GIS
260 _aMexico, DF (Mexico)
_bCIMMYT :
_c2003
300 _ap. 242-243
340 _aPrinted
520 _aThe effectiveness of a product evaluation system largely depends on the genetic correlation between multi-environment trials (MET) and the target population of environments (TPE) (Comstock 1977). Previous classifications of maize environments relied mainly on climatic and soil data (e.g., Pollak and Corbett l993; Runge 1968). While useful to describe environmental variables affecting crop productivity I these efforts did not quantify the impact of these variables on the genetic correlations among testing sites. Consequently I plant breeders have more extensively used classifications of environments based on similarity of product discrimination in product evaluation trials (e.g., Cooper et al. 1993). However, these efforts frequently fail to provide a long-term assessment of the TPE, mainly due to the cost and impracticality of collecting empirical performance data for long-term studies. Using a crop simulation modeL Chapman et al. (2000) integrated soils and long-term weather data to classify highly variable sorghum environments in Australia. For a subset of six testing locations, they found that three drought stress environment types had a consistent relationship with simulated yield. The purpose of this study was to investigate the applicability of this approach to the characterization of the milder US maize environments.
546 _aEnglish
591 _a0309|AGRIS 0301|AL-Maize Program
593 _aJuan Carlos Mendieta
595 _aCPC
650 1 0 _aClimatic factors
_91048
650 1 0 _aCrop husbandry
_91058
650 1 0 _91081
_aDrought stress
_gAGROVOC
650 1 0 _aEnvironmental factors
650 1 0 _aExperimentation
650 1 0 _aGenetic correlation
650 1 0 _aGrain yield
_91339
650 1 7 _aMaize
_gAGROVOC
_2
_91173
650 1 0 _aSoils
650 1 0 _aStatistical analysis
_91276
650 1 0 _aTaxonomy
_91284
650 1 0 _91151
_aHybrids
_gAGROVOC
700 1 _aFast, T.,
_ecoaut.
700 1 _aMerrill, R.,
_ecoaut.
700 1 _aWei, J.,
_ecoaut.
942 _cPRO
999 _c7014
_d7014