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Table 7 Summary of chromosomal regions with co-localized QTLs for seedling root traits identified in this study and QTLs for six other traits reported previously in the same RIL population

From: Genetic analysis of seedling root traits reveals the association of root trait with other agronomic traits in maize

QTLs identified in this study QTLs reported in previous studies
QTL Bin Traita Marker interval Bin Reference
4dPSC1–1, 4dPSC1–2, 4dRTN1–1, 4dTRL1–1, 4dRSA1–1, 4dTRV1–1, 9dTRV1–1 1.02 As content in stem phi001–bnlg1083 1.02–1.03 [40]
   Internode number phi427913–phi001 1.02 [38]
   MARL in HN phi427913–bnlg1614 1.01–1.02 [42]
4dTRV1–2, 9dPRL1–1, 14d ARD1–1 1.03 Grain yield, Row number bnlg2180–umc1169 1.03–1.04 [34]
   Internode number phi001–bnlg1484 1.03 [38]
   ARL in LN/HN bnlg1866–bnlg2180 1.03 [42]
9d RTN1–1 1.07 Plant height umc2151–bnlg1556 1.07 [38]
Leaf number umc1335–umc1122 1.07 [38]
Internode number umc2151–umc1122 1.07 [38]
MARL in LN, AARL in LN bnlg1025–umc2029 1.07–1.09 [42]
RSFW, RSDW bnlg1556–umc2029 1.07–1.08 [36]
14d RSA2–1 2.06–2.07 As content in stem bnlg1633–umc1042 2.07 [40]
Plant height umc2372–umc1497 2.07 [38]
AARL in LN bnlg1633–umc1042 2.07 [42]
RSFW, RSDW, LTD umc1042–bnlg2144 2.07–2.08 [36]
14dLRN3–1, 14dRTN3–1 3.04 Leaf number umc1223–umc1773 3.04 [38]
Leaf number umc2002–bnlg1035 3.04 [38]
Average internode length umc1773–bnlg1035 3.04 [38]
ARN in LN/HN umc1504–umc1523 3.04 [42]
4dLRN4–1 4.03 Grain yield umc2082–umc2176 4.03 [34]
4d ARD5–1 5.03 Plant height, Average internode length umc1692–umc2373 5.03 [38]
Resistance to common smut phi109188–umc2373 5.03 [35]
14dPRL5–1, 14dTRL5–1, 14dRSA5–1 5.05 Ear length Plant height umc1019–bnlg1237 umc1155–bnlg1237 5.05–5.06 5.05 [34] [38]
Average internode length umc1155–umc1019 5.05 [38]
LRL in LN/HN bnlg278–phi048 5.05–5.07 [42]
14d TRV5–1 5.09 AARL in LN/HN umc1792–umc1829 5.08–5.09 [42]
4d PRL6–1 6.07 Internode number umc1020–phi299852 6.07 [38]
AARL in LN/HN umc1063–phi299852 6.07 [42]
9d LRN7–1 7.02–7.03 Ear length bnlg1792–umc2142 7.02 [34]
Grain yield bnlg339–umc1865 7.03 [34]
As content in leaves umc2142–mmc0411 7.02–7.03 [40]
Internode number blg1792–mmc0411 7.02 [38]
14d ARD8–1 8.04–8.05 Row number umc1460–umc1562 8.04–8.05 [34]
9dRSA8–1, 9dTRV8–1, 14dTRV8–1 8.05 Ear length umc1562–bnlg666 8.05 [34]
9d TRL9–1 9.04 Row number bnlg127–bnlg1209 9.03–9.04 [34]
Leaf number bnlg1208–umc1771 9.04 [38]
Average internode length bnlg1209–umc1771 9.04 [38]
LTD bnlg1209–umc2119 9.04 [36]
9d PSC10–1 10.05 Kernel weight umc1911–umc2043 10.04–10.05 [34]
14d PSC10–1 10.06 Row number umc1993–phi323152 10.05–10.06 [34]
ARN in HN umc2043–umc1061 10.05–10.06 [42]
LTD umc2122–phi323152 10.05–10.06 [36]
  1. aFor the abbreviations of the traits reported previously, five seedling root traits generated under low nitrogen (LN) or high nitrogen (HN) conditions (MARL, ARL, AARL, ARN, and LRL) [42] and three traits associated with water stress responses (LTD, RSFW, and RSDW) [36] are included. MARL, ARL, AARL, ARN, and LRL represent maximal axial root length, axial root length, average axial root length, axial root number, and lateral root length, respectively. LTD, RSFW, and RSDW represent leaf temperature differences, shoot fresh weight, and shoot dry weight, respectively