Study on the Adaptability of Two Introduced Medicinal Plants Dendrobium in Guangyuan

Authors He Tao; Fan Xiaoli; Huang Tianfang; Lu Lu

Journal Chinese Wild Plant Resources , 2020,3:39

Abstract Objective: It was evaluated scientifically that the adaptability of introduction of Dendrobium denneanum and Dendrobium nobile in Guangyuan area,in order to provide theoretical basis for large-scale extend.Methods: The data of geographical location,meteorological elements,morphological characters and stress resistance were obtained by means of investigation,observation and measurement.The total ash,acid insoluble ash,the alcohol soluble extract and the dendrobine content were determined respectively.Results: The average tillering index I of D.denneanum was 1.50,and that of D.nobile was 0.71.There was significant difference in stem diameter of D.denneanum before and after introduction.The fresh weight of single stem decreased significantly after introduction of D.nobile,and the average width of leaf increased significantly.The differences of other morphological characters were not significant.The quality of D.denneanum reached the provincial standard,and the content of dendrobine in D.nobile reached the standard of Chinese Pharmacopoeia.The average survival rate of D.denneanum after overwintering was 99.75%,the average disease resistance rate was 97.75%,and that of D.nobile in plastic house was 97.00% and 96.75%,respectively.Conclusion: D.denneanum can adapt to the climate environment of Guangyuan owing to its stronger cold resistance and disease resistance.D.nobile could be planted in plastic house so as to improve the survival rate in winter,which has strong disease resistance and poor cold resistance.

Species covered 石斛 Dendrobium nobile