Table 3. Summary of allelic additive (A) effects according to all four possible genotypes.
|
Genotype
a
|
Aphid resistance scores
b
|
||||
|---|---|---|---|---|---|
| QTL_13_1 | QTL_13_2 | Field2W | Field4W | GH2W | GH4W |
| r1r1 | r2r2 | 4.87 (46)a | 4.72 (46)a | 4.37 (46)a | 4.74 (46)a |
| r1r1 | R2R2 | 4.58 (33)a | 4.12 (33)b | 3.97 (33)b | 4.33 (33)a |
| R1R1 | r2r2 | 3.75 (32)b | 2.69 (32)c | 1.65 (31)c | 2.29 (31)b |
| R1R1 | R2R2 | 1.89 (64)c | 1.31 (64)d | 1.03 (63)d | 1.63 (63)c |
a
QTL_13_1: BARCSOYSSR_13_1139 on chromosome 13, r1: susceptible allele, and R1: resistant allele; QTL_13_2: Satt649 on chromosome 13, r2: susceptible allele, and R2: resistant allele.
b
Field2W: aphid scores after 2 weeks in the field cage, Field4W: aphid scores after 4 weeks in the field cage, GH2W: aphid scores after 2 weeks in the greenhouse, and GH4W: aphid scores after 4 weeks in the greenhouse. Means followed by the same letters in the phenotype columns are not significantly different by the least significant difference at P=0.05. The numbers in parentheses refer to number of plants for each genotype generated by combination of alleles from two quantitative trait loci.