文章基本信息

标题：Seed scarification requirements in native and alien species
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作者：Federico Colombo Speroni ; Marta Leonor De Viana
期刊名称：Ecología Austral
印刷版ISSN：1667-782X
电子版ISSN：1667-7838
出版年度：2000
卷号：10
期号：2
页码：123-131
出版社：Asociacion de Ecologia Argentina
摘要：We studied both seed scarification requirement for nine species (seven native and two alien) present in San Lorenzo mountain forest (Salta, Argentina) and the effect of seed passage through the cattle digestive tract on germination of Gleditsia triacanthos. We carried out two germination experiments in order to compare: 1) the effect of three different exposition times to HCl(c) on germination of nine tree species, and 2) the effect of mechanical and biological scarification on G. triacanthos germination. We recorded the number of germinated seeds daily and we calculated the proportion and speed of germination for each species and treatment. We evaluated the viability of non-germinated seeds with tetrazoleoum. Jacaranda mimosifolia and Tecoma stans showed the highest germination percentage and speed without scarification but a high mortality in the other treatments. On the other side, Duranta serratifolia and Celtis spinosa (dispersed by birds) did not germinate in any of the treatments. Seed passage trough cattle digestive tract did not enhance G. triacanthos