Table 7. Digenic epistatic effects detected for kernel weight conditioned on four other kernel-related traits and kernel volume conditioned on three kernel-structure characteristics in the immortalized F2 population.
Trait | Chr-inia | Marker interval | Chr-inja | Marker interval | AiAjb | R2(%)c | AiDjb | R2(%) | DiAjb | R2(%) | DiDjb | R2(%) |
KW|KL | 9–15 | umc1714-umc1982 | 10–18 | bnlg1450-bnlg1185 | −0.011** | 3.6 | ||||||
2–11 | umc2380-bnlg1329 | 5–14 | umc1722-umc1482 | 0.008** | 2.1 | 0.023** | 0.6 | |||||
2–16 | bnlg2144-umc1464 | 7–7 | umc1929-bnlg1808 | 0.014** | 1 | −0.013* | 0.9 | |||||
2–17 | umc1464-bnlg1520 | 5–9 | umc2159-phi331888 | −0.028** | 3.1 | |||||||
2–18 | bnlg1520-phi101049 | 7–5 | umc1666-bnlg1792 | 0.008** | 1.2 | −0.019** | 5.1 | −0.014* | 0.9 | |||
4–11 | bnlg1784-umc1194 | 9–3 | umc1430-umc1037 | 0.009** | 2.2 | |||||||
KW|KWI | 3–13 | umc1174-umc1773 | 10–13 | bnlg1677-umc1640 | −0.012** | 2.5 | ||||||
KW|KT | 1–26 | phi227562-bnlg504 | 3–15 | umc1495-umc2261 | 0.013** | 0.4 | 0.046** | 7.1 | ||||
3–1 | umc1793-phi104127 | 10–4 | umc1432-bnlg1716 | −0.013** | 1.6 | 0.015** | 1.9 | |||||
6–25 | bnlg1600-umc2196 | 10–15 | umc2172-phi323152 | −0.009** | 1.4 | 0.033** | 6.6 | |||||
KW|KV | 1–7 | umc1044-phi339017 | 4–1 | phi072-umc1017 | 0.013** | 8.8 | −0.015** | 1.7 | 0.024** | 3.5 | ||
1–23 | phi308707-umc1553 | 4–4 | umc1288-umc2280 | 0.007** | 1.5 | −0.027** | 5.5 | |||||
1–23 | phi308707-umc1553 | 4–6 | umc1945-umc1963 | 0.007* | 0.6 | |||||||
KV|KL | 2–8 | bnlg1036-umc2402 | 6–2 | phi299852-umc1341 | −0.025** | 5.4 | 0.028** | 2.7 | ||||
2–18 | bnlg1520-phi101049 | 6–19 | bnlg1867-umc1444 | −0.01** | 2.5 | 0.010** | 1.5 | 0.025** | 4.2 | |||
4–6 | umc1945-umc1963 | 7–9 | umc1987-bnlg1305 | 0.005* | 0.8 | −0.009** | 3.7 | |||||
KV|KWI | 1–4 | bnlg1429-bnlg1803 | 10–9 | umc2043-umc2122 | −0.021** | 2.8 | ||||||
4–7 | umc1963-umc1652 | 4–9 | umc1662-bnlg2291 | −0.010** | 0.6 | 0.014** | 5 | 0.016** | 1.4 | |||
4–7 | umc1963-umc1652 | 7–1 | mmc0171-umc1545 | −0.007** | 2.1 | −0.012** | 1.9 | |||||
KV|KT | 3–22 | bnlg1160-phi046 | 7–11 | dupssr11-dupssr9 | −0.014** | 4.3 | 0.021** | 1.5 | ||||
6–14 | umc1006-bnlg1188 | 7–2 | umc1545-umc1401 | 0.007* | 0.03 | 0.011** | 0.1 | |||||
6–18 | umc2312-bnlg1867 | 7–2 | umc1545-umc1401 | −0.021** | 2 | −0.011** | 0.3 |
Notes: a Chr-ini is the first marker interval chromosomal location, and Chr-inj is the second marker interval chromosomal location;
The digenic effect of the two interacting loci; AiAj, the effect of additive-by-additive interaction between points i and j; AiDj, the effect of additive-by-dominant interaction between points i and j; DiAj, the effect of dominant-by-additive interaction between points i and j; DiDj, the effect of dominant-by-dominant interaction between points i and j; a positive or negative epistatic effect indicates that the parental allele or recombinant allele combinations, respectively, increase phenotypic values;
Contribution explained by the locus pair interaction;
p≤0.0005; ** p≤0.0001;
Bold indicates the interval is identical to conditional or unconditional QTL.