Table 7

Epistatic QTLs (E-QTLs) and E-QTL x Environment (E-QE) effects detected for popping traits using multi-environment analysis
E-QTLia Marker interval LG (position)b E-QTLja Marker interval LG (position) AAc h2(aa)d E-QE AAEe h2(aae)f
    Popping dimension index (PDI)
E-PDI3PP IAC24 -BM187 3 (71.0-84.9) E-PDI7PP BM185 -BMc294 7 (24.2-36.6) −2.98*** 2.7 ns
    Expansion coefficient (EC)
E-EC3PP BMc259 -IAC24 3 (67.8-71.0) E-EC9PP PV-at007 -BMc184 9 (60.9-70.2) 1.62* 0.2 ns
E-EC5PP E32M60-100 -BM175 5 (40.6-46.1) E-EC7PP BM185 -BMc294 7 (71.0-84.9) −7.59*** 2.6 ns
    Percentage of unpopped seeds (PUS)
E-PUS3PP BMc259 -IAC24 3 (67.8-71.0) E-PUS6PP E40M60-91 -E45M50-50 6 (5.0-5.8) −3.87*** 1.1 −4.61* AAE4 0.9
E-PUS3PP BMc259 -IAC24 3 (67.8-71.0) E-PUS7PP BMc294 -BMc248 7 (36.6-38.1) 5.47*** 0.6 ns
E-PUS5PP BM138 -E32M60-100 5 (39.8-40.6) E-PUS6PP E40M60-91 -E45M50-50 6 (5.0-5.8) −3.62*** 1.8 ns

a E-QTLi and E-QTLj are the two QTLs involved in epistatic interaction.

b Linkage group and the estimated confidence interval of QTL position in brackets (in Kosambi cM).

c Estimated additive by additive epistatic effect. Positive values indicate that alleles from PHA1037 have a positive effect on the traits, and negative values indicate that positive effect on the traits is due to the presence of the alleles from PMB0225.

d Percentage of the phenotypic variation explained by additive by additive epistatic effects.

e Predicted additive by additive epistatic effect by environment interaction effect. AAE1, AAE2, AAE3, AAE4, and AAE5: epistasis associated with environments LD09, SD09, LD10, SD10, and LD11, respectively. The meaning of sign values is described in the third footnote (c).

f Percentage of the phenotypic variation explained by additive by additive epistatic effect by environment interaction effect.

*P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001. Only significant effects are listed. ns = No significant effects on the five environmental conditions evaluated.

Yuste-Lisbona et al.

Yuste-Lisbona et al. BMC Plant Biology 2012 12:136   doi:10.1186/1471-2229-12-136

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