H 49 AE: híbrido de maíz para Valles Altos de México con androesterilidad para producción de semilla

Abstract

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’.

Cruzas Simples Progenitoras E Híbrido Trilineal De Maíz H-53 Ae: Densidades Y Productividad

“…El rendimiento de grano del híbrido H-53 AE, difiere con el potencial productivo que señalan Espinosa-Calderón et al, (2015) y Espinosa-Calderón et al, (2019) con rendimientos de 9 a 12,5 t ha -1 , lo que se debe a la fecha de siembra, pues Espinosa-Calderón et. al.…”

“…La floración masculina, los dos progenitores en su versión fértil (M53F x M59) y androestéril (M53AE x M59) mostraron ser más precoces con 80 días después de la siembra, según lo reportado por Tadeo-Robledo et al, (2012). En cruzas simples existe una diferencia notable de casi 10 días; por el contrario, el H-53 AE resultó ser más tardío con 84 días similar a lo que reportan Espinosa-Calderón et al, (2015).…”