The inheritance of root vigor and days to flowering were studied in the F2 populations derived from winter- and spring-type crosses and their reciprocal crosses. Root vigor was found to be controlled by three genes whereas, a single dominant gene was found to be responsible for days to flowering. Positive and significant correlation was found between seed yield and yield attributing traits, seed yield and root length, days to flowering and root length. Days to flowering was negatively correlated to seed yield. Linkage map was constructed with 262 SNP and 3 SSR markers. Two QTL for both root vigor and days to flowering were identified. One of the root vigor QTL was assigned on B. rapa chromosome A03 and B. oleracea C09, and two putative candidate genes, ASA1 and RLF were identified. Flowering time QTL was assigned on the A07 and C01, and a candidate gene, ATH1 was detected.