Partial unidirectional translocation from 5AL to 7BS leads to dense spike in an EMS-induced wheat mutant.

ABSTRACT:

Background

As the inflorescence of wheat, spike architecture largely determines grain productivity. Dissecting the genetic basis for the spike morphology of wheat can contribute to the designation of ideal spike morphology to improve grain production.

Results

The present study characterizes a dense spike1 (ds1) mutant, derived from Nongda3753, induced by EMS treatment, which exhibits a dense spike and reduced plant height. Through bulked segregant analysis sequencing (BSA-Seq) of two segregating populations, ds1 was mapped to the short arm of chromosome 7B. Further genotypic and phenotypic analyses of the residual heterozygous lines from F₃ to F₆ of Yong3002×ds1 revealed that there was a 0-135 Mb deletion in chromosome 7B associated with the dense spike

SUBMITTER: Zhang X 

PROVIDER: S-EPMC11555835 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature