Experiences in germination and vegetative reproduction applied to reforestation with Polylepis australis (Rosaceae) in the Sierras Grandes de Córdoba, Argentina
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Abstract
Propagation experiments with Polylepis australis BITT were conducted in a greenhouse and in the Córdoba mountains to facilitate forest recovery through reforestation. Germination percentage varied greatly among seeds collected from different individuals and was positively correlated with the cover of P. australis at the collection site. No differences in germination were observed among substrates (sand, leaf litter, or a soil-sand mix) or with substrate sterilization. However, treating seeds with damp cold was harmful. Vegetative propagation through cuttings proved feasible, with spring being the best season, and the use of root promoters was not advisable. The survival rate of transplanted seedlings and cuttings in their natural habitat was high, with seedlings showing greater growth compared to cuttings.
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