version ISSN 0717-9200 TALAMO, Andrés; CARDOZO, Silvana and
MOHR, Federico. Seed production in relation to fruit size of
quebracho blanco (Aspidosperma quebracho-blanco) in the semiarid
Chaco forest. Bosque (Valdivia) [online]. 2012, vol.33, n.1, pp.
87-91. ISSN 0717-9200. doi: 10.4067/S0717-92002012000100010.
Effective management and conservation of a biological population
requires knowledge of the different phases of its life cycle. We
present data on seed production of quebracho blanco (white
quebracho), Aspídosperma quebracho-blanco, a key tree species in
the Chaco ecosystem of South America. In the southwestern sector
of Copo National Park, Argentina, we recorded numbers of viable
(with embryo) and non-viable (without embryo) seeds per fruit.
The average fruit held 23 viable and 2 non-viable seeds
(medians). Using a simple regression model we determined the
relation between number of viable seeds and fruit size (width
and length, respectively): bwidth = 4.9, R2 = 0.18; blength =
0.35, R2 = 0.33. The low