Germination of Lespedeza floribunda Bunge.seeds was studied in order to provide cultivation and application in gardening and landscaping.Results indicated that the seeds of Lespedeza floribunda had the characteristic of forcing dormancy that was caused by hard seed vessels.The dormancy could be released by soaking in hot water and by sulphuric acid treatment.The most appropriate treatment time was 10～30 min,resulting in average germination rate(96%),average germination power(82.53%)and average germination index(17.54).The optimum germination temperature was 25 ℃ and the germination rate,germination power and germination index was 95%,81%,22.95 respectively after treated by sulphuric acid for 20 min.
Wild resources of Pteroceltis tatarinowii Maxim.were investigated and morphological characteristics of leaves,fruits and seeds were measured in 2005.In Lingyan Temple of Shandong,the trees grow in the temple and along the roads.In addition to the two Pteroceltis tatarinowii,the average DBH and height of the other trees were 24.32 cm and 10.05 m respectively.The stands in Miaofeng Mountain distributed only in the valley of Dishuiyan with the average DBH of 16.12 cm and average height of 11.50 cm.Pteroceltis tatarinowii could naturally reproduce in wild habitat and only a few natural reproduced seedlings were found at Lingyan Temple.The results of variance analysis showed that there was significant difference of 9 characteristics among different individual trees of the same source.Except for width of fruit wing,8 morphological characteristics significantly differed among three sources.Significant difference exited in leaf length and leaf width among three sources.Although there was no significant difference in seed and nut features between two different sources in Beijing,those characteristics of Pteroceltis tatarinowii from Beijing source were obviously different with those from Shangdong.The seeds from Shandong were the smallest and lightest.There was distinctness in morphological quality characteristics from different trees.
