Data from: Genomic variation in recently collected maize landraces from Mexico

The present dataset comprises 36,931 SNPs genotyped in 46 maize landraces
native to Mexico as well as the teosinte subspecies Zea maiz ssp.
Parviglumis and ssp. Mexicana. These landraces were collected directly
from farmers mostly between 2006 and 2010. We accompany these data with a
short description of the variation within each landrace, as well as maps,
principal component analyses and neighbor joining trees showing the
distribution of the genetic diversity relative to landrace, geographical
features and maize biogeography. High levels of genetic variation were
detected for the maize landraces (HE = 0.234 to 0.318 (mean 0.311), while
slightly lower levels were detected in Zea m. mexicana and Zea m.
parviglumis (HE = 0.262 and 0.234, respectively). The distribution of
genetic variation was better explained by environmental variables given by
the interaction of altitude and latitude than by landrace identity. This
dataset is a following up product of the Global Native Maize Project, an
initiative to update the data on Mexican maize landraces and their wild
relatives, and to generate information that is necessary for implementing
the Mexican Biosafety Law.