Seed dormancy and germination in Albizia falcataria and Albizia procera.
Twenty-two pretreatments were tested on Albizia falcataria [Paraserianthes falcataria] and A. procera seeds in order to speed germination. The study showed that in addition to the presence of an impermeable seed coat and micropylar plug, dormancy in these 2 species is due to a water soluble inhibitor present in the seed coat. The possibility of difference in the solubility and/or quantity of the inhibitor present in these 2 species was indicated; the inhibitor in A. procera may be less in quantity and/or less water soluble. Although treatments such as manual nicking and acid scarification improved the germination percentage, the most effective and practical method of pretreatment to obtain quicker and higher germination was physical scarification followed by soaking in flowing water for 24 hours.