A Genome-Wide Association Study Dissects the Genetic Architecture of the Metaxylem Vessel Number in Maize Brace Roots.

ABSTRACT: Metaxylem vessels in maize brace roots are key tissue, and their number (MVN) affects plant water and inorganic salt transportation and lodging resistance. Dissecting the genetic basis of MVN in maize brace roots can help guide the genetic improvement of maize drought resistance and lodging resistance during late developmental stages. In this study, we used 508 inbred lines with tropical, subtropical, and temperate backgrounds to analyze the genetic architecture of MVN in maize brace roots. The phenotypic variation in MVN in brace roots was evaluated in three environments, which revealed broad natural variation and relative low levels of heritability (h ² = 0.42). Stiff-stalk lines with a temperate background tended to have higher MVNs than plants in other genetic backgro

SUBMITTER: Liu M 

PROVIDER: S-EPMC8961028 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature