Quantitative genetic analyses
Mean values of at least three replicates were calculated for each
isoprenoid compound measured, for each AI-RIL and each natural
accession. These values were used in QTL mapping and GWAS. The broad
sense heritability (H2) for isoprenoid accumulation
for the AI-RIL population was estimated according to the formula:
H2 = VG /(VG +
VE), where VG is the among-genotype
variance component and VE is the residual (error)
variance. For GWAS heritability, estimates have been extracted from the
mixed model accordingly.