Skip to main content

Table 4 Quantitative trait loci (QTLs) identified using multiple traits-multiple interval mapping analysis for root length (RL), root diameter (RD), root surface area (SA), surface area of fine roots (SA2), root:shoot ratio (R:S), total seedling dry weight (TDW) and total P content (Pcont)

From: Multiple interval QTL mapping and searching for PSTOL1 homologs associated with root morphology, biomass accumulation and phosphorus content in maize seedlings under low-P

QTLa Bin cMb Marker/Position (Mbp) LOD Flanking markersc/Position (Mbp) Main effectd / R2 (%)e
RL RD SA SA2 R:S TDW Pcont
qMulti1.03 1.03 94.4 umc1073 18.4 bnlg1083 PZA03742_1 −0.109 0.163* −0.075 0.110 −0.168* −0.147* 0.026
    32.9 9 27.5 44.5 1.18 2.64 0.56 1.19 2.82 2.14 0.65
qMulti1.06 1.06 183. PZA00619_3 5.07 bnlg1598 umc1335 0.093 −0.028 −0.084 0.078 −0.054 −0.004 0.210**
   8 195.4   187.8 196.9 0.85 0.08 0.70 0.60 0.27 0.00 4.33
qMulti1.07 1.07 209.0 PHM114614_22 20.01 PZA01963_15 PHM12693_8 −0.185* 0.010 −0.231** −0.224** 0.373*** −0.299*** −0.138+
    205.6   203.7 223.5 3.03 0.01 4.73 4.41 12.28 7.89 1.67
qMulti2.08 2.08 72.7 PZA01885_2 16.10 PZA02077_1 PZA01885_2 0.116 −0.109 0.083 −0.041 −0.111 −0.049 −0.262***
    206.9   206.5 206.9 1.28 1.13 0.65 0.02 1.16 0.23 6.50
qMulti3.04 3.04 83.0 PZA00297_2 7.90 ZmPSTOL3.04 PHM5502_31 0.217** −0.216** 0.192* 0.119+ 0.124+ −0.023 −0.059
    39.9   20.2 67.2 4.28 4.25 3.34 1.29 1.40 0.05 0.31
qMulti3.06 3.06 138. PZA01962 8.25 PZA02212_1 PZA03735_1 −0.018 −0.097 −0.049 −0.047 0.306*** −0.077 −0.025
   0 178.2   174.5 180.5 0.03 0.81 0.20 0.19 8.07 0.51 0.05
qMulti6.06 6.06 130. PHM16607_11 6.88 PHM597_18 PZB01569_7 −0.027 0.108 0.010 0.178* −0.064 0.111 0.045
   5 160.2   157.9 160.7 0.07 1.11 0.01 3.01 0.39 1.17 0.02
qMulti8.02 8.02 48.0 ZmPSTOL8.02 15.76 ZmPSTOL8.02 PHM1978_111 −0.252** 0.164 −0.243** −0.184* −0.177* −0.095 −0.239**
    13.3   13.3 21.8 4.14 1.76 3.83 2.20 2.04 0.59 3.71
qMulti9.04 9.04 27.5 PHM13183_12 20.30 PZA0225_8 PZB01358_1 −0.022 −0.135+ −0.079 −0.286*** 0.083 −0.164+ −0.148+
    104.7   104.5 106.8 0.04 1.71 0.58 7.67 0.65 2.53 2.05
qMulti10.03 10.03 38.0 PHM1155_14 19.96 PHM1812_32 PZA01877_2 −0.180* −0.106 −0.240** −0.403*** 15.17 −0.047 −0.171* −0.013
    62.1   47.7 77.5 3.03 1.06    0.21 2.74 0.02
      fR2 T   26.17 35.54 24.51 33.53 34.04 23.41 27.28
  1. aQTLs are named using the “multi”, indicating that were detected using MT-MIM, followed by their genomic position in bin
  2. bcM and Mbp indicate the marker position in centiMorgans and in mega base pairs at maximum LOD value
  3. cFlanking markers are based on −1.5 LOD support interval
  4. dEffect measured as standard deviation from the progeny mean: Positive values indicate that L3 carries the allele for an increase in the trait, and negative values indicate that L22 contributes the allele for an increase in the trait. Effect significance based on p-values estimated via score statistics resampling (+ p < 0.1, *p < 0.05, **p < 0.01, ***p < 0.001)
  5. eR2: Ratio of the genotypic variance of the QTL effect to the phenotypic variance, times 100
  6. fR2 T: genotypic variance of the full model (including epistasis shown in Table 4)