CASTRO, G.M.; C.O. GARDNER; J.H. LONNQUIST. 1968.Cumulative effects and the nature of heterosis in maize crosses involving genetically diverse race. Crop. Sci. 8:97-101.
CORTEZ, H.M.; A.c. RODRIGUEZ; M.G. GUTIERREZ; J.I. DURON; R.c. GIRON; M.G. OYERVIDES. 1985. Evaluation of broad-base improved populations of maize (Zea mays L.). I. Cumulative gene effects and heterosis. Univ. Aut. Agraria "Antonio Narro" Res.Pub. p. 1-43. Buenavista, Saltillo, México.
CROSSA, J.; S.K. VASAL; D.L. BECK. 1990. Combining ability estimates of CIMMYT's tropical late yellow maize germplasm. Maydica. 35:273- 278.
GARDNER, C.O. 1967. Simplified methods for estimating constants and computing sums of squares for a diallel cross analysis. Fitotec. Latinoamer. 4:11-22.
GARDNER, C.O.; E. PATERNIANI. 1967. A genetic modelused to evaluate the breeding potential of openpollinated varieties of corno Ciencia E Cultura 19:95-101.
GARDNER, C.O.; SA. EBERHART. 1966. Analysis and interpretation of variety cross dialell and related populations. Biometrics 22:439-452.
GRIFFING, B. 1956. Concept of general and specific combining ability in relation to diallel crossing systems. Australian J. Biol. Sci. 9:463-493.
HA YMAN, B.I. 1954. The theory and analysis of diallel crosses Genetics 39:789-809.
________1958. The theory and analysis of diallel crosses II. Genetics 43:63-85.
________1960. The theory and analysis of diallel crosses III. Genetics 45: 157-172.
ROBINSON, H.F.; C.C. COCKERHAM. 1961. Heterosis and inbreeding depression in populations involving two open pollinated varieties of maize. Crop. Sci.1:68-71.
Enrique Navarro G.
Affiliation not stated
Fernando Borrego E.
Universidad Aut. Agr. Antonio Narro, (UAAAN) Saltillo, Coah México
How to Cite
Genic effects and heterosis of parental populations and related corn (Zea mays L.) populations.
Agronomía Mesoamericana: Vol. 4 (January-December)
Published: Jun 21, 2016
This study with the Gardner-Eberhart model (1966) involved eight maize parental populations and their related populations. The objectives were to estimate the cumulative gene effects (additive, dominance and heterotic) which could The justify support of a maize hybrid programo The grain yield inter-varietal dominance effects accounted for 55.54% of the generation means, suggesting large genetic variability within populations. Heterotic effects accounted for 12.11 %, indicating little difference in gene frequency for loci controlling grain yield. Plant height followed the same pattero as grain yield, since dominance effects were the most important. However, homozygote loci (aj) were important in explaining genetic variability for days to bloom and number of ears. For grain yield, the cross Pop. 32 x Pop. 21 maximized the heterotic effects. Population 21 exhibited a high average heterosis, so we suspect that its, combination with Popo 32 and CN(S)-C3, among others, would be a great genetic material for a Reciprocal Recurrent Selection Programo