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Revista mexicana de ciencias agrícolas

versão impressa ISSN 2007-0934

Resumo

QUIROZ MERCADO, Jorge et al. Response of 10 maize cultivars to population density in three localities of the mexiquense center. Rev. Mex. Cienc. Agríc [online]. 2017, vol.8, n.7, pp.1521-1535. ISSN 2007-0934.

The population density is one of the main factors that contribute to increase grain yield in maize. The present work was established in 2013 in three localities of the center of the State of Mexico, Mexico to evaluate the yield of grain and its main components in ten maize cultivars in three population densities. The three trials were established in the field in an experimental design of complete random blocks with three replicates in a divided plot arrangement: in the large plots the population densities were distributed and in the girls the cultivars. There were significant differences (p= 0.01) between cultivars in the 13 variables recorded, in population density, as were ear length, ear diameter, “olote” weight, grain weight per plant, and grain yield. An increase in population density decreased the number and weight of grain per plant but at 104 167 plants ha-1 the yield was 10.03 t ha-1. The highest grain yield (10 t ha-1) was obtained with P204W, but this did not differ statistically from IC 2010, ASMJ9082, H-40 and AS-723 The main components analysis explained 65.94% of the original total variation, in which a high correlation was observed between grain yield, grains per plant, prolificacy index and “olote” weight.

Palavras-chave : Zea mays L. multivariate analysis; outstanding variests; plants ha-1; High Valleys of Central Mexico.

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