“…Until now, a total of 61 QTLs (twenty seed length QTLs, nineteen seed width QTLs, 3 seed thickness QTLs, and nineteen QTLs of seed weight) have been identified with major variations in PVE% across the different chromosomal positions of the whole genome chromosome of watermelon “Chr-01, Chr-03, Chr-06, Chr-07, Chr-10, LG-04, and LG-09” using numerous mapping populations derived from crossing of wild type and cultivar parent lines ( Prothro et al., 2012a ; Prothro et al., 2012b ; Sandlin et al., 2012 ; Ren et al., 2012 ; Meru and McGregor, 2013 ; Liu et al., 2014 ; Kim et al., 2015 ; Zhou et al., 2016 ; Li et al., 2018 ; Meru et al., 2018 ; Luan et al., 2019 ; Guo et al., 2020 ; Li et al., 2021 ; Osae et al., 2021 ; Liang et al., 2022 ). In this study, three major QTLs of SWt (SWt-4.1, SWt-5.1, and SWt-10.1), two co-localized QTLs of STh and SL (STh-7.1 & SL-7.1), two major QTLs of SW (SW-4.1 and SW-10.1), one major QTL (SSI-6.1), and one major QTL (SCT-1.1) were detected on six differential chromosomes (Chr-01, Chr-04, Chr-05, Chr-06, Chr-07, and Chr-10) ( Table 2 ; Figure 3 ).…”