Abstract
Genetic parameters for rooting of stem cuttings inEucalyptus nitens (Deane & Maiden) Maiden wereestimated from almost 600 control-pollinated seedlings grown in pots in anenvironmentally controlled glasshouse. Multiple harvests spanning a 9 monthperiod were taken from the 67 families arising from a partial diallel matingdesign among 25 unrelated parents. Overall, of the 14205 cuttings that wereset, only 14% initiated roots. There was little if any biologicallyimportant harvest-by-family interaction for rooting. Individual tree narrowsense heritability (h2) was highat 0.4–0.5. The ratio of specific combining ability variance to generalcombining ability variance was low. The operational implications forincorporating this trait into a breeding program are discussed.
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