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Appendix 2

General combining ability (GCA) estimates of female parents, parental rankings (according to the GCA estimates) and family-level inbreeding depression (FIDk) due to open pollination (OP) for DBH at ages 4 and 6 from planting. The results pertain to the 48 parents that are represented in both the OP and Polymix (POL) cross types.

Parent
Code
4 years 6 years


GCA Ranking FID k GCA Ranking FID k
297 10.673 32 2.208 (0.207) 12.995 28 0.906 (0.070)
299 11.399 4 1.214 (0.106) 13.747 9 1.309 (0.095)
314 10.140 48 0.849 (0.084) 12.610 41 0.004 (0.0)
330 10.622 36 1.214 (0.114) 12.905 35 1.081 (0.084)
340 10.379 42 2.744 (0.264) 12.336 45 2.018 (0.164)
349 10.711 29 0.578 (0.054) 12.579 42 0.535 (0.043)
464 10.648 34 –0.364 (–0.033) 13.122 22 –0.668 (–0.048)
487 10.790 24 3.371 (0.312) 13.069 24 2.024 (0.155)
501 10.836 21 2.566 (0.237) 12.999 27 2.288 (0.176)
503 10.772 25 2.375 (0.220) 12.939 34 2.306 (0.178)
506 10.708 30 –0.301 (–0.027) 13.134 21 –0.171 (–0.013)
507 10.679 31 2.198 (0.206) 12.490 43 0.536 (0.043)
508 10.978 15 0.400 (0.036) 13.648 10 0.788 (0.058)
509 11.237 7 1.867 (0.166) 13.865 7 1.562 (0.113)
510 11.224 8 0.318 (0.028) 13.892 6 0.483 (0.035)
511 10.809 23 0.779 (0.072) 13.181 19 1.506 (0.114)
512 11.187 10 0.136 (0.012) 13.970 5 0.410 (0.029)
513 10.929 19 2.543 (0.233) 12.963 32 2.436 (0.188)
514 11.241 6 3.010 (0.268) 14.464 4 2.711 (0.187)
515 10.452 40 1.917 (0.183) 12.433 44 1.074 (0.086)
516 10.412 41 0.216 (0.021) 13.089 23 –0.436 (–0.032)
518 10.722 28 2.922 (0.272) 12.726 39 2.616 (0.206)
519 10.627 35 0.585 (0.055) 12.980 30 0.289 (0.022)
520 11.801 1 1.354 (0.115) 14.545 1 1.624 (0.112)
521 11.199 9 2.186 (0.195) 13.361 15 –0.217 (–0.016)
523 10.376 43 0.441 (0.042) 13.488 13 0.319 (0.024)
524 10.229 45 –0.236 (–0.022) 12.986 29 –0.593 (–0.044)
526 10.216 46 –0.021 (–0.002) 12.275 46 –0.616 (–0.048)
530 10.735 27 1.542 (0.144) 12.743 38 1.075 (0.084)
531 10.996 14 1.706 (0.155) 12.958 33 1.586 (0.122)
532 10.936 18 –0.084 (–0.008) 12.892 36 0.014 (0.001)
533 10.821 22 2.769 (0.256) 13.015 26 2.561 (0.197)
536 11.042 11 2.733 (0.247) 13.491 12 1.106 (0.082)
537 11.290 5 –0.330 (–0.028) 13.854 8 –0.235 (–0.017)
538 10.960 16 0.940 (0.086) 13.172 20 0.824 (0.063)
539 10.950 17 1.097 (0.100) 13.057 25 0.274 (0.021)
540 11.713 2 1.480 (0.126) 14.526 2 1.733 (0.119)
541 11.656 3 0.347 (0.030) 14.519 3 0.654 (0.045)
542 10.908 20 –0.435 (–0.038) 12.975 31 –0.370 (–0.028)
543 11.011 12 0.555 (0.050) 13.515 11 0.490 (0.036)
544 10.511 38 0.351 (0.033) 12.176 47 0.070 (0.006)
545 10.320 44 –0.237 (–0.022) 12.807 37 0.047 (0.004)
547 10.142 47 0.569 (0.056) 12.166 48 –0.012 (–0.001)
548 11.004 13 2.623 (0.238) 13.456 14 1.394 (0.104)
549 10.534 37 1.488 (0.141) 13.304 16 1.001 (0.075)
550 10.465 39 0.585 (0.056) 13.193 18 0.902 (0.068)
551 10.747 26 0.853 (0.079) 13.227 17 0.637 (0.048)
553 10.667 33 –0.173 (–0.016) 12.687 40 –0.644 (–0.048)

The GCA estimate of each parent is based on the data from the POL crosses, and it is given in cm on an absolute scale (i.e. after adding the least-squares mean of the POL crosses to the BLUP of the parent effect). FIDk is given in cm on an absolute scale, as well as on a relative scale in parenthesis. Relative values of FIDk were calculated as FIDk/maximum, with “maximum” = LSM when POL outperformed OP, or “maximum” = LSM when OP outperformed POL (Ågren and Schemske, 1993; Dudash et al., 1997).