G2H: A Precise Block-Scanning Strategy for Genetic Background Assessment in Maize Backcross Breeding.

ABSTRACT: (1) Background: Backcross (BC) breeding is a key technology of crop improvement, yet its efficiency largely depends on the precise assessment of the genetic background recovery. Conventional molecular marker-assisted techniques suffer from inadequate genomic coverage or an inability to resolve true chromosomal structure. (2) Methods: To address major issues in maize BC breeding, we devised a G2H block-scanning strategy. This approach converts high-density point markers into haplotype blocks, enabling precise evaluation of the genetic background in backcross progenies. A key innovation is the CFDI, which quantifies the distribution of unrecovered fragments, allowing for visual tracking of chromosomal recombination and identification of ideal individuals with both a high genetic background r

SUBMITTER: Qing X 

PROVIDER: S-EPMC12733054 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature