However, the PGC genetics are complicated; therefore, in the molecular breeding process,
multiple factors should be taken into account. Additionally, the PGC10 locus can only explain 10.5%
of the variation. Therefore, 12 markers became reference points for design breeding, and these 12
markers were closely associated with PGC5, PGC8-2, and PGC8-3, which accounted for 25.5, 15.4,
and 10.9% of the explained variation, respectively (Table 1). These integrated genotype combinations
in PGC or other complicated traits are compulsory for molecular breeding, because quantitative traits
are so intricate that no quantitative trait was completely associated with one genotype.