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ARS Home » Midwest Area » Columbia, Missouri » Plant Genetics Research » Research » Research Project #440515

Research Project: Mapping the Genetic Loci Controlling Highland Adaptation in Maize

Location: Plant Genetics Research

Project Number: 5070-21220-046-002-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 1, 2021
End Date: Aug 31, 2023

Identify the genetic regions underlying maize adaptation to highland growing conditions.

We will conduct QTL mapping studies of one Mexican and one South American population, each derived by crossing a landrace adapted to lowland conditions with a landrace adapted to highland conditions. The populations were phenotyped for an array of agronomic, fitness, and elevation-related phenotypes at three field locations in Mexico: lowland, intermediate, and highland. The population will be genotyped with a custom SNP array. Several iterations of QTL analysis will be conducted: on individual traits, individual traits adjusted for covariates such as flowering time, and multiple traits simultaneously.