Three temperate maize populations, DEA, FS14 and BUGARD which may be useful for the improvement of tropical maize populations through introgression, were evaluated agronomically during two consecutive years in two tropical agroecological zones (north and south of Benin). The traits studied were: earliness (days to silking and maturity, number of leaves), plant and ear heights, reaction to diseases, husk cover, grain yield and its components, and harvest index. All the populations were early maturing, susceptible to rust, tropical blight and maize streak and showed intermediate or poor husk cover. Their grain yields were low but FS14 and DEA yielded significantly higher than BUGARD in savanna zone. FS14 and DEA harvest indexes were high and significantly greater than that, very low, of BUGARD. FS14 and DEA can be used in tropical breeding programs, through introgression, to improve tropical maize populations for traits such as earliness, reduced plant and ear heights, and harvest index.
Justin Abadassi. Research Article: Agronomic evaluation of temperate maize populations in tropical zone. J App Biol Biotech. 2014; 2 (03): 008-011. DOI: 10.7324/JABB.2014.2302
1. IITA (International Institute of Tropical Agriculture). Maize. Ibadan: IITA; 2009.
2. Prasanna BM. Diversity in global maize germplasm : characterization and utilization. J. Biosci. 2012; 37:843-855.
3. FAO. FAO Statistical Yearbook 2013. Rome: FAO; 2013.
4. Shiferaw B, Prasanna B, Hellin J, Banzigen M. Crops that feed the world 6. Past successes and future challenges to the role played by maize in global food security. Food Security. 2011; 3:307-327.
5. Gracen VE . Sources of temperate maize germplasm and potential usefulness in tropical and subtropical environments. Advances in Agronomy. 1986; 39:127-172.
6. Avila G . Using temperate germplasm in tropical maize improvement in Bolivia. In: Brandolini A, Salamini F, editors. Breeding strategies for maize production improvement in the tropics, Firenze: FAO/Instituto Agronomico per l’Oltremare; 1985, p. 133-141.
7. Efron Y. Use of temperate and tropical germplasm for maize breeding in the tropical area of Africa. In: Brandolini A, Salamini F, editors. Breeding strategies for maize production improvement in the tropics, Firenze: FAO/Instituto Agronomico per l’Oltremare; 1985, p. 105-131.
8. Sauvaire D, Sanou J. Un exemple d’introgression de génotypes tempérés dans le matériel tropical chez le maïs. L’Agronomie Tropicale.1989; 44:197-201.
9. Abadassi J, Hervé Y, Hainzelin E. Effet de l’introgression de matériel tempéré sur des populations tropicales de maïs. Bulletin de la Recherche Agronomique. 1998; 22:1-29.
10. Hainzelin E. Exotic introgression incidence on two elite tropical maize populations. Maydica. 1998; 43:19-26.
11. Abadassi J, Hervé Y. Introgresssion of temperate germplasm to improve an elite tropical maize population. Euphytica. 2000; 113:125-133.
12. Santos (dos) MX, Pollak LM, Pacheco CAP, Guimaraes PEO, Peternelli LA, Parentoni SN, Lourenço L. Incorporating different proportions of exotic germplasm into two adapted populations. Genet. Mol. Biol. 2000; 23:445-451.
13. Brewbaker JL. Continuous genetic conversions and breeding of corn in neutral environment. Proc. Corn and Sorghum Ind. Res. Conf. 1974; 29:118-133.
14. Kim SK. Breeding of temperate maize germplasm for tropical adaptation. Paper presented at the CIMMYT Asian Regional Maize Program Workshop, Islamabad, Pakistan, september 22-28, 1990.
15. Pollak LM, Torres-Cardona S, Sotomayor-Rios A. Evaluation of heterotic patterns among Carribbean and tropical ï‚´ temperate maize populations. Crop Science. 1991; 31:1480-1483.
560 Absract views 174 PDF Downloads 734 Total views