Abstract

ESPINOSA-CALDERON, Alejandro et al. H 49 AE: corn hybrid for the High Valleys of Mexico with androsterility for seed production. Rev. Mex. Cienc. Agríc [online]. 2022, vol.13, n.7, pp.1333-1338.  Epub Nov 22, 2022. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v13i7.1768.

In Mexico, corn (Zea mays L.) is the most important crop due to its sown area, its consumption of more than 200 kg per person per year, as well as due to the role it plays in the economy. Every year more than 12 million tonnes of corn are imported, so it is urgent to increase grain production, for this, improved varieties with good productivity are required, such as the H 49 AE hybrid, which was generated in the Corn Genetic Improvement Program of the National Institute of Forestry, Agricultural and Livestock Research based in the Valle de México Experimental Field, the H 49 AE hybrid, with androsterility in its progenitors, solves the problem present in the production of hybrid corn seed, since it limits the detasseling, which favors maintaining the genetic quality of the seed; saves from 24 to 50 daily wages ha-1, work that causes economic loses in seed companies and waste of registered seed, in addition to limited grain production, for not using the best hybrid corns. The average yield of H 49 AE, in the validation, in the State of Mexico was 10 700 kg ha-1, with a variation from 8.5 to 12.5 t ha-1. On average the behavior is higher by 23.7% with respect to the control hybrid ‘H-48’.

Keywords : Zea mays L.; androsterility; hybrids; yield..