Abstract
The effect of introgression of temperate germplasm into an elite tropical maize population, EV8443SR, was studied for different traits. Two temperate lines, FS14 and DEA, were crossed with EV8443SR. The F1 of each cross was backcrossed to EV8443SR to produce the BC1. F1 and BC1 were subjected to two cycles of random mating. Random sets of S1 families were derived from the tropical-temperate populations and the tropical parent for evaluation in two tropical locations. Introgression of FS14 and DEA into EV8443SR significantly increased earliness, and reduced plant height, number of grains per ear, 1000 grains weight and grain yield. Significant harvest index increases were observed. The effect of introgression on genetic variance of EV8443SR varied with trait and sometimes with cross and location. The highest expected genetic progress was obtained in a tropical-temperate population for most of the traits studied. EV8443SR appeared better than, or pratically equal to, the tropical-temperate populations as a foundation population to improve grain yield and husk cover.
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References
Albrecht, B. & J.W. Dudley, 1987. Evaluation of four maize populations containing different proportions of exotic germplasm. Crop Sci 27: 480–486.
Avila, G., 1985. Using temperate germplasm in tropical maize improvement in Bolivia. In: A. Brandolini & F. Salamini (Eds.), Breeding strategies for maize production improvement in the tropics, pp. 133–141. FAO/Instituto Agronomico per l'Oltremare, Firenze, Italy.
Beck, D.L., S.K. Vasal & J. Crossa, 1991. Heterosis and combining ability among subtropical and temperate intermediate-maturity maize germplasm. Crop Sci 31: 68–73.
Crossa, J. & C.O. Gardner, 1987. Introgression of an exotic germplasm for improving an adapted maize population. Crop Sci 27: 187–190.
Crossa, J., C.O. Gardner & R.F. Mumm, 1987. Heterosis among populations of maize (Zea mays L.)with different levels of exotic germplasm. Theor Appl Genet 73: 445–450.
Eagles, H.A. & A.K. Hardacre, 1990. Genetic changes from introgression of highland Mexican germplasm into a Corn Belt dent population of maize. Theor Appl Genet 79: 543–549.
Eagles, H.A., A.K. Hardacre & R.K. Bansal, 1989. Testcross performance of maize lines from backcross populations containing highland Mexican or highland Peruvian germplasm. Euphytica 41: 263–272.
Efron, Y., 1985. Use of temperate and tropical germplasm for maize breeding in the tropical area of Africa. In: A. Brandolini & F. Salamini (Eds.), Breeding strategies for maize production improvement in the tropics, pp. 105–131. FAO/Instituto Agronomico per l'Oltremare, Firenze, Italy.
Gallais, A., 1990. Théorie de la sélection en amélioration des plantes. Masson, Paris.
Gomez, K.A. & A.A. Gomez, 1984. Statistical procedures in agricultural research. Second edition. John Wiley & Sons, New York.
Gracen, V.E., 1986. Sources of temperate maize germplasm and potential usefulness in tropical and subtropical environments. Advances in Agronomy 39: 127–172.
Griffing, B. & E.W. Lindstrom, 1954. A study of the combining abilities of corn inbreds having varying proportions of Corn Belt and non Corn Belt germplasm. Agron J 46: 545–552.
Guttierez-Gaitan, M.A., H. Cortez-Mendoza, E.N. Wathica, C.O. Gardner, M. Oyervides-Garcia, A.R. Hallauer & L.L. Darrah, 1986. Testcross evaluation of Mexican maize populations. Crop Sci 26: 99–104.
Hallauer, A.R. & J.B. Miranda, 1981. Quantitative genetics in maize breeding. Iowa State University Press, Ames.
Hoffbeck, M.D., S.J. Openshaw, J.L. Geadelmann, R.H. Peterson & D.D. Stuthman, 1995. Backcrossing and intermating in an exotic x adapted cross of maize. Crop Sci 35: 1359–1364.
Iglesias, C.A. & A.R. Hallauer, 1989. S2 recurrent selection in maize populations with exotic germplasm. Maydica 34: 133–140.
Kramer, H.H. & A.J. Ullstrup, 1959. Preliminary evaluations of exotic maize germplasm. Agron J 51: 687–689.
Mungoma, C. & L.M. Pollak, 1988. Heterotic patterns among ten Corn Belt and exotic maize populations. Crop Sci 28: 500–504.
Oyervides-Garcia, M., A.R. Hallauer & H. Cortez-Mendoza, 1985. Evaluation of improved maize populations in Mexico and the US Corn Belt. Crop Sci 25: 115–120.
SAS Institute, 1982. SAS user's guide: statistics. SAS Institute Inc., Cary, NC.
Sauvaire, D. & J. Sanou, 1989. Un exemple d'introgression de génotypes tempérés dans le materiel tropical chez le maïs. L'Agron Trop 44: 197–201.
Tracy, W.F., 1990. Potential contributions of five exotic maize populations to sweet corn improvement. Crop Sci 30: 918–923.
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Abadassi, J., Hervé, Y. Introgression of temperate germplasm to improve an elite tropical maize population. Euphytica 113, 125–133 (2000). https://doi.org/10.1023/A:1003916928181
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DOI: https://doi.org/10.1023/A:1003916928181