TABLE 4.

Single-environment genomic best linear unbiased predictor (GBLUP) (GB) and Gaussian kernel (GK) prediction accuracy (±standard deviation) for potato tuber characteristics considering pseudo-diploid (A) (model 1), additive tetrasomic polyploid (B) (model 1), full tetraploid (C) (model 1), and B-C (model 2) with 30 random partitions (70% training and 30% testing) in Umeå 2020 (N = 252).

Characteristic	A Pseudo-diploid (model 1)	B Additive tetrasomic polyploidy (model 1)	C Full tetraploid (model 1)	B-C (model 2)
GB
Total tuber weight	0.448 ± 0.078	0.431 ± 0.092	0.455 ± 0.077	0.455 ± 0.084
Tuber weight < 40	0.450 ± 0.093	0.515 ± 0.075	0.490 ± 0.075	0.514 ± 0.075
Tuber weight 40–50	0.280 ± 0.091	0.336 ± 0.097	0.348 ± 0.083	0.354 ± 0.091
Tuber weight 50–60	0.495 ± 0.085	0.500 ± 0.083	0.531 ± 0.061	0.528 ± 0.076
Tuber weight > 60	0.458 ± 0.074	0.456 ± 0.080	0.482 ± 0.058	0.474 ± 0.073
Starch (%)	0.636 ± 0.058	0.714 ± 0.038	0.642 ± 0.061	0.716 ± 0.041
Reducing sugars	0.351 ± 0.136	0.390 ± 0.133	0.351 ± 0.153	0.375 ± 0.138
GK
Total tuber weight	0.471 ± 0.074	0.454 ± 0.086	0.456 ± 0.077	0.464 ± 0.086
Tuber weight < 40	0.465 ± 0.085	0.513 ± 0.075	0.480 ± 0.076	0.511 ± 0.077
Tuber weight 40–50	0.310 ± 0.080	0.335 ± 0.083	0.342 ± 0.082	0.342 ± 0.086
Tuber weight 50–60	0.519 ± 0.084	0.529 ± 0.076	0.531 ± 0.065	0.534 ± 0.074
Tuber weight > 60	0.486 ± 0.068	0.473 ± 0.079	0.485 ± 0.064	0.483 ± 0.076
Starch (%)	0.660 ± 0.048	0.716 ± 0.038	0.651 ± 0.057	0.715 ± 0.039
Reducing sugars	0.346 ± 0.131	0.387 ± 0.133	0.317 ± 0.138	0.367 ± 0.127