Table 5.
Mean values of agronomic traits of soybeans having different genotype combinations measured at Columbia, MO, in 2020 (20MO).
| Genotype category | Gene | n | Agronomic traits | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dt1 | Dt2 | E1 | SD | DTF | DTM | Branch | Pod | RL | ||
| Dt1_e1 | Dt1 | dt2 | e1-as | 4 | 4.9 ± 1.1 b | 45.3 ± 2.2 b | 122.7 ± 2.6 a | 1.9 ± 2.0 a | 0.8 ± 0.5 c | 0.3 ± 0.4 c |
| dt1_e1 | dt1 (R166W) | dt2 | e1-as | 4 | 6.5 ± 1.5 a | 44.7 ± 1.9 b | 116.8 ± 4.4 bc | 1.7 ± 1.5 ab | 8.9 ± 4.0 ab | 4.3 ± 2.2 a |
| dt1-t1_e1 | dt1-t1 (R130K) | dt2 | e1-as | 1 | 6.5 ± 1.3 a | 43.7 ± 0.5 c | 116.0 ± 2.5 cd | 1.3 ± 1.0 ab | 10.3 ± 2.6 a | 4.6 ± 1.7 a |
| dt1-t2_e1 | dt1-t2 (R62S) | dt2 | e1-as | 1 | 6.1 ± 1.4 a | 47.0 ± 0.0 a | 118.0 ± 2.9 b | 1.1 ± 1.4 b | 8.1 ± 3.2 b | 4.4 ± 2.0 a |
| Dt2_e1 | Dt1 | Dt2 | e1-as | 4 | 5.3 ± 1.0 b | 42.1 ± 2.9 d | 114.8 ± 3.0 d | 1.5 ± 1.2 ab | 7.8 ± 2.9 b | 2.2 ± 0.7 b |
| LSD (0.05) | 0.7 | 0.7 | 1.4 | 0.8 | 1.4 | 0.7 | ||||
n represents the number of lines within each of the genotype categories. Means ± standard deviations are presented. SD represents the mean of stem diameters (mm) measured at the first, middle, and last internodes at maturity; DTF and DTM represent days to flowering and maturity, respectively; Branch represents number of branches on the main stem; Pod represents number of pods at apical stems; RL represents raceme length in cm. DTF and DTM were measured by a plot. For the other traits, a total of fifteen individual plants per line (five plants by 3 replications) were sampled for phenotyping. Mean values of each trait were obtained by averaging the means of lines within each genotype category; means followed by the same letter were not significantly different from each other at 95% confidence with Fisher's least significant difference (LSD) procedure.