Exploring native maize germplasm in Nuevo León, Mexico

Abstract

In many states, like Nuevo León, even today there is considerable diversity of maize varieties (Zea mays L.) yet unexplored or partially studied and whose collection is required as a source of germplasm. The aim of this study was to collect native maize populations in the Great Plains of North America, Northern Gulf Coastal Plain and Sierra Madre Oriental regions, for ex situ conservation characterization and utilization in different future breeding programs. In 2008, overall 135 native maize populations were collected, of which 49.63% were pure races and 50.33% interracial crosses. Native populations were obtained from the Sierra Madre Oriental (42%), Northern Gulf Coastal Plain (30%) and Sierra Madre Oriental (28%). The collected germplasm was preserved at the INIFAP Maize Central Bank in Texcoco, State of Mexico. Germplasm collections as a source of genetic diversity should be characterized for efficient management and effective utilization, enabling improved productivity in the state. Chances are that some previously reported germplasm may be have been lost over the years, therefore the collections of native maize should continue in the physiographic regions of Nuevo León.