Abstract:Eco-physiological characteristics of seed dormancy in Paulownia fortunei from six provenances were observed in order to discuss the theory of tree dormancy and the relation between dormancy and tree distribution. The six provenances were as follows: Nanning (E108°18′ N22°52), Guilin (E110°37′ N25°19′), Zhuzhou (E113°03′ N27°40′), Yichang (E111°23′ N30°44′), Guangyuan (E105°54′ N32°25′), and Shiyan (E110°54′ N32°36′). Lots of 100 seeds from each of the six provenances were placed in 9-cm petri dishes w...