Zhang Zhao, Xia Tianrui, Tao Yuehong, Dai Lingchao, Liu Yanlu, Zhang Bengang
Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China.
Zhongguo Zhong Yao Za Zhi. 2011 Feb;36(3):285-8.
Through the study of allelopathy of the pericarp of Phellodendron amurense, the role of self-regeneration barriers was investigated in order to find ways and means for the protection of wild populations of P. amurense. Solution preparation: soaked pericarp of P. amurense in distilled water at 4 degrees C to get solution A, and reflux extraction of pericarp with distilled water at 100 degrees C to get solution B. Both of the solution A and solution B were used in the experiment of seed germination and seedling growth with the seeds of cabbage and wheat. The results showed that 20 g x L(-1) concentration of solution A and solution B inhibited significantly seed germination of cabbage and wheat, while 100 g x L(-1) concentration of solution A even completely inhibited the seed germination of wheat. 20 g x L(-1) concentration of solution A significantly inhibited the cabbage and wheat seedling growth, completely inhibited the root growth of cabbage, while 100 g x L(-1) concentrations of solution A completely inhibited seedling growth of cabbage and wheat. Comparing to solution A, the intensity of solution B are diminished on seed germination and seedling growth. It is concluded that the allelopathy of pericarp of P. amurense is multi-material role in the results, some of allelochemicals are easily degradable when exposed to heat. Overall, the allelopathy of pericarp of P. amurense can affect the seed germination and seedling growth. It is supposed that allelochemicals existed in the pericarp of P. amurense is one of the reason leading to difficulties in self-regeneration of its population.
通过对黄檗果皮化感作用的研究，探讨其自我更新障碍的作用，以寻找保护黄檗野生种群的方法和途径。溶液制备：将黄檗果皮在4℃蒸馏水中浸泡得溶液A，在100℃蒸馏水中回流提取得溶液B。溶液A和溶液B均用于白菜和小麦种子的发芽及幼苗生长实验。结果表明，20 g·L⁻¹浓度的溶液A和溶液B显著抑制白菜和小麦种子发芽，而100 g·L⁻¹浓度的溶液A甚至完全抑制小麦种子发芽。20 g·L⁻¹浓度的溶液A显著抑制白菜和小麦幼苗生长，完全抑制白菜根系生长，而100 g·L⁻¹浓度的溶液A完全抑制白菜和小麦幼苗生长。与溶液A相比，溶液B对种子发芽和幼苗生长的抑制强度减弱。结果表明，黄檗果皮化感作用具有多物质作用，部分化感物质受热易降解。总体而言，黄檗果皮化感作用会影响种子发芽和幼苗生长。推测黄檗果皮中存在的化感物质是其种群自我更新困难的原因之一。
