Resumo

TADEO-ROBLEDO, Margarita et al. Productivity of male sterile and fertile of maize hybrids in four evaluation environments. Rev. Mex. Cienc. Agríc [online]. 2015, vol.6, n.8, pp.1857-1866. ISSN 2007-0934.

In this work, five trilinear maize hybrids (Tsiri Puma 2, H-57 AE, H-47 AE, PUMA 1183 AEC1, Puma 1183 AEC2) were evaluated in their versions male sterile and fertile, in two sowing dates in each of two locations in High Valley. The aim was to define the production capacity of each. The research was conducted in the spring summer 2012 cycle, in the Valley of Mexico Experimental Field (CEVAMEX) and the Faculty of Higher Studies of Cuautitlán (FESC). The treatment in the study was: trilinear hybrids, the male sterile and fertile versions and the four environments (result of the two locations and two sowing dates). Statistical analysis was carried out in factorial way, considering the hybrid factors, male sterility/fertility, environments and interactions. In yield, highly significant difference were observed for environments, hybrids, as well as the interaction environments x hybrids and significant for hybrids x male sterility/fertility, but not for the factor male sterility/fertility or the other interactions. It was concluded that the locality FESC-F2 (9 892 kg ha-1) was statistically higher than the average of the other three environments. The highest yield was obtained with the hybrid Tsiri Puma 2 with 8 930 kg ha-1, the lowest one was Puma 1183 AEC1 (6 321 kg ha-1). It was found that the average of the male sterile version, considering all the genotypes and the four environments, exhibited a yield of 7 327 kg ha-1, statistically similar to the yield of the fertile version (7 294 kg ha-1).

Palavras-chave : hybrids; maize; male sterility; productivity.

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