Table 2.

Types and frequency of the different errors found among the individuals and stages analyzed.

Stage	% of 112 problematic cell lines	Diagnostic of error	Likely cause
Controlled crosses	43.7	Correct mother/wrong father	Pollen contamination
Controlled crosses	21.4	Wrong mother and sometimes wrong father	Misidentification of parental trees in the seed orchard
Somatic embryogenesis laboratory, cutting production or planting	30.2	Correct embryogenic tissue in cryobanks, but errors found among trees in the field	Misidentification of the material
Cryobanks	4.8	Wrong embryogenic tissue, but correct trees planted in the field	Misidentification of the embryogenic tissue

The percentage is the proportion of the 112 cell lines identified as problematic.