From maize native varieties to transgenic hybrids: II. hybridization
Abstract
This article, which is a follow-up to one where maize germplasm
collection and obtention of improved Creole varieties were shown,
is presented with the somewhat historic objective of showing that
the professional improvers of this plant in our country have
continued to work in the development of corn hybrids of different
types: from double to simple crosses, including trilinear hybrids
and synthetic varieties. This review about recent hybrids shows
that maize regions in México have not been left unattended, from
the important irrigation areas in the center, northwest and
northeast, to the south and southeastern regions where rainfed
agriculture prevails, not less important than the former. We
insist in the fact that with the production of new hybrids, the
general seed price will tend to be balanced in relation to those of
commercial companies, and we highlight two relevant problems
with the development of transgenic hybrids: contamination of
Creole varieties and the health of consumers.
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