Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

A preliminary study on population, seed germination characters and adaptability of Buddleja davidii Franch.

Abstract

The biological characters of wild Buddleja davidii populations were investigated in the vicinal regions of Sichuan and Yunnan, China. The results suggested that the average branch, numbers of individuals, the average diameter of the biggest stems of individuals in a population and the average height of population showed distinct pertinence as the altitude changed. However, the average inflorescence (infructescence) length of a population and the average quality of 1000 seeds showed little pertinence as the altitude changed. Furthermore, germination percentage of B. davidii enhanced as time elapsed for four years. Light had a minor effect on the germination percentage. Finally, the reasons why B. davidii can become an invasive species in some other countries and may not endanger the native biodiversity are discussed according to the present results.