Fig. 1

Crossing design using polymix breeding with paternity analysis of the progeny. Numbers in the cells (e.g. “20”) refer to the percentage of the pollen mixture (based on weight) contributed by the male clone. For example, C13 was mated with a pollen mixture of C13, C39, C46, C55, and C60 pollen; all 5 pollen fathers constituted 20% each of the pollen mixture. “S” indicates selfing. Offspring from the two internal 7 × 7 diallels were genotyped with microsatellite markers (green coloured cells). Offspring in red coloured cells were included as half-sibs (not genotyped)