The Genetic Basis of Haploid Induction in Maize Identified with a Novel Genome-Wide Association Method.

ABSTRACT: In vivo haploid induction (HI) triggered by pollination with special intraspecific genotypes, called inducers, is unique to Zea maysL. within the plant kingdom and has revolutionized maize breeding during the last decade. However, the molecular mechanisms underlying HI in maize are still unclear. To investigate the genetic basis of HI, we developed a new approach for genome-wide association studies (GWAS), termed conditional haplotype extension (CHE) test that allows detection of selective sweeps even under almost perfect confounding of population structure and trait expression. Here, we applied this test to identify genomic regions required for HI expression and dissected the combined support interval (50.34 Mb) of the QTL qhir1, detected in a previous study, into two closely linked genom

SUBMITTER: Hu H 

PROVIDER: S-EPMC4905542 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature