Research data and analysis code for root biomass heterosis and context-dependent associations with genome-wide SNP heterozygosity in radish

This record contains the block-level phenotypic data, cultivar metadata, detailed statistical outputs, reproducibility scripts, software requirements, and SNP-alignment input supporting the manuscript “Root biomass heterosis and context-dependent associations with genome-wide SNP heterozygosity in radish.” The data cover two designed parent–hybrid field experiments (2015 and 2022) and a commercial radish cultivar panel evaluated during 2021–2023. The code reproduces the reported BLUE/BLUP, heterosis, correlation, cultivar-group interaction, population-structure, temporal robustness, and marker-callability sensitivity analyses. Raw GBS reads are archived separately in the Korea Sequence Read Archive under BioProject KAP240933 and KAP230636.