Table 2. Quantitative genetic partitioning of variation in floral, vegetative and reproductive timing traits in B. rapa RILs in three treatments, including variance components of each effect, standard error (in parentheses) and significance of effects.
Trait | Style length | Ovary length | Short anther length | Short filament length | Long anther length | Long filament length | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Random effects (Z) | ||||||||||||
Chamber (treatment) | 0.002 (0.001)‡ | 0.009 (0.004)‡ | 0.003 (0.001)§ | 0.017 (0.007)§ | 0.002 (0.001)‡ | 0.029 (0.011)§ | ||||||
Genotype | 0.053 (0.008)** | 0.173 (0.024)** | 0.067 (0.009)** | 0.186 (0.027)** | 0.071 (0.009)** | 0.203 (0.028)** | ||||||
Genotype × treatment | 0.021 (0.003)** | 0.046 (0.007)** | 0.015 (0.002)** | 0.071 (0.010)** | 0.010 (0.002)** | 0.048 (0.007)** | ||||||
Residual | 0.065 (0.002)** | 0.190 (0.007)** | 0.047 (0.002)** | 0.223 (0.008)** | 0.039 (0.001)** | 0.186 (0.006)** | ||||||
Fixed effects (F) | df | F | df | F | df | F | df | F | df | F | df | F |
Treatment | F2, 23.7 | 14.87** | F2, 20.4 | 97.29** | F2, 21.3 | 1.17 | F2, 20.1 | 70.59** | F2, 19.7 | 2.56 | F2, 17 | 14.27* |
Significant genotype × treat contrasts | WL/CL WL/CS | CL/CS WL/CL WL/CS | CL/CS WL/CL WL/CS | CL/CS WL/CL WL/CS | CL/CS WL/CL WL/CS | CL/CS WL/CL WL/CS | ||||||
Trait |
Petal blade length |
Petal claw length |
Petal width |
Petal area |
Flowers aborted |
Leaf area |
||||||
Random effects (Z) | ||||||||||||
Chamber (treatment) | 0.038 (0.015)§ | 0.019 (0.007)§ | 0.046 (0.018)§ | 2.180 (0.878)** | 0.250 (0.117)‡ | 2.995 (1.135)§ | ||||||
Genotype | 0.266 (0.038)** | 0.087 (0.012)** | 0.345 (0.047)** | 21.528 (3.083)** | 1.409 (0.245)** | 10.259 (1.999)** | ||||||
Genotype × treatment | 0.093 (0.012)** | 0.017 (0.003)** | 0.099 (0.013)** | 8.287 (1.102)** | 0.11 (0.145) | 15.345 (1.517)** | ||||||
Residual | 0.254 (0.009)** | 0.090 (0.003)** | 0.255 (0.009)** | 23.018 (0.786)** | 7.299 (0.248)** | 14.444 (0.480)** | ||||||
Fixed effects (F) | df | F | df | F | df | F | df | F | df | F | df | F |
Treatment | F2, 17..8 | 84.34** | F2, 16.1 | 0.71 | F2, 17.5 | 117.8** | F2, 19.3 | 11.43** | F2, 14.5 | 0.87 | F2, 21.7 | 53.95* |
Significant genotype × treat contrasts | CL/CS WL/CL WL/CS | WL/CL WL/CS | WL/CL WL/CS | WL/CL WL/CS | WL/CL | CL/CS WL/CL WL/CS | ||||||
Trait |
Stem length |
Days to flowering |
Collection interval |
Herkogamy |
Stamen exsertion |
Pistil exsertion |
||||||
Random effects (Z) | ||||||||||||
Chamber (treatment) | 4.632 (1.759)§ | 20.835 (7.790)§ | 1.599 (0.634)§ | 0.030 (0.012)§ | 0.01 (0.004)§ | 0.03 (0.012)§ | ||||||
Genotype | 34.074 (4.371)** | 33.542 (4.950)** | 5.3686 (0.821)** | 0.112 (0.018)** | 0.051 (0.008)** | 0.1477 (0.022)** | ||||||
Genotype × treatment | 6.361 (0.868)** | 10.726 (2.059)** | 0.7516 (0.388)‡ | 0.065 (0.01)** | 0.02 (0.003)** | 0.0638 (0.01)** | ||||||
Residual | 20.414 (0.68)** | 62.137 (2.097)** | 15.8354 (0.545)** | 0.222 (0.008)** | 0.09 (0.003)** | 0.256 (0.009)** | ||||||
Fixed effects (F) | df | F | df | F | df | F | df | F | df | F | F | |
Treatment | F2, 16.6 | 6.55§ | F2, 15.7 | 84.96** | F2, 15.5 | 23.40** | F2, 17.6 | 21.67** | F2, 17.2 | 51.04** | F2, 17.6 | 52.59** |
Significant genotype × treat contrasts | WL/CL WL/CS | CL/CS WL/CL WL/CS | WL/CL WL/CS | CL/CS WL/CL WL/CS | CL/CS WL/CL WL/CS | CL/CS WL/CL WL/CS | ||||||
Abbreviations: CL, cool temperature long photoperiod; CS cool temperature short photoperiod; RIL, recombinant inbred line; WL, warm temperature long photoperiod.
‡P<0.05, §P<0.01, *P<0.001, **P<0.0001.