Enhancing adaptation of tropical maize to temperate environments using genomic selection.

ABSTRACT: Tropical maize can be used to diversify the genetic base of temperate germplasm and help create climate-adapted cultivars. However, tropical maize is unadapted to temperate environments, in which sensitivities to long photoperiods and cooler temperatures result in severely delayed flowering times, developmental defects, and little to no yield. Overcoming this maladaptive syndrome can require a decade of phenotypic selection in a targeted, temperate environment. To accelerate the incorporation of tropical diversity in temperate breeding pools, we tested if an additional generation of genomic selection can be used in an off-season nursery where phenotypic selection is not very effective. Prediction models were trained using flowering time recorded on random individuals in separate lineages o

SUBMITTER: Choquette NE 

PROVIDER: S-EPMC10468305 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature