Resumen

ROBLEDO TADEO, Margarita et al. Atziri Puma: white grain corn hybrid for the High Valleys of Mexico. Rev. Mex. Cienc. Agríc [online]. 2022, vol.13, n.7, pp.1339-1343.  Epub 22-Nov-2022. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v13i7.2397.

Mexico imported 18 million tons of yellow grain corn in the last two years. It is the world’s largest importer. Due to its importance in the economy and food, it is convenient to achieve food sufficiency and sovereignty in corn. It is urgent to increase production, so public improved corn varieties, with good productivity, are required. The Atziri Puma hybrid was generated in the Corn Genetic Improvement Program of the Cuautitlán Faculty of Higher Studies, with the collaboration of researchers from the National Institute of Forestry, Agricultural and Livestock Research, Valle de México Experimental Field. It is a trilinear hybrid, with C-type androsterility and restoration of fertility. It solves the problem of removing tassels from female plants in the production of hybrid corn seed. It favors the genetic quality of the seed and saves 24 to 50 daily wages ha-1. This hybrid is the first with fertility restoration in 79 years of public research in Mexico. It is of intermediate cycle, its male flowering (tassel) appears at 86 days and the female flowering (ear) at 88 days, at altitudes of 2 250 m. It reaches physiological maturity at 164-167 days. It can be cut and then harvested, if this work is done manually, on the other hand, with machinery it can be threshed at 179 days. Its average yield is 10.5 t ha-1. Atziri Puma is recommended for the High Valleys of Mexico (2 200 to 2 600 masl).

Palabras llave : Zea mays L.; androsterility; fertility restoration; seed production..