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003 MX-TxCIM
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040 _aMX-TxCIM
072 0 _aA50
072 0 _aE16
082 0 4 _a631.53
_bBOO
100 1 _aMiranda Filho, J.B. de
_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 _aChain crosses for estimationg components of the genetic variance
260 _aMexico, DF (Mexico)
_bCIMMYT :
_c2003
300 _ap. 274-275
340 _aPrinted
520 _aThe partition of the hereditary variance was outlined by Fisher (l9l8) on the basis of the genetic covariation and correlation between relatives. Comstock and Robinson (1948; 1952) provided mating designs for the estimation of the variance components on an experimental basis. Cockerham (1954) and Kempthome (1954) extended Fisher's theory by providing general formulations that fucluded an unlimited number of alleles per locus, arbitrary fubreeding, and epistasis. Hallauer and Miranda Filho (1995) presented the details of the genetic statistical procedures for the estimation of the components of genetic variance in maize populations. The mating scheme, known as chain crosses, was suggested by Lonnquist (1961) as a variation of recurrent selection based on full-sib progenies. However, the components of genetic variance expressed amongst progenies from chain crosses have not been studied. This study provides the statistical models and procedures for futerpreting the analysis of variance for the estimation of the components of the genetic variance from chain crosses in random mating populations.
546 _aEnglish
591 _a0309|AGRIS 0301|AL-Maize Program
593 _aJuan Carlos Mendieta
595 _aCPC
650 1 0 _aAnalysis
650 1 0 _aCrossbreeding
650 1 0 _aExperimentation
650 1 0 _aGenetic correlation
650 1 0 _91386
_aHeritability
_gAGROVOC
650 1 0 _aInbreeding
650 1 7 _aMaize
_gAGROVOC
_2
_91173
650 1 0 _91134
_aGenotypes
_gAGROVOC
942 _cPRO
999 _c7021
_d7021