Nadeem M, Palni L M S, Kumar A, Nandi S K
G.B. Pant Institute of Himalayan Environment & Development, Kosi-Katarmal, Almora, Uttaranchal, India.
Planta Med. 2007 Apr;73(4):388-91. doi: 10.1055/s-2007-967154. Epub 2007 Mar 29.
The morphological features of Podophyllum hexandrum Royle, a 'critically endangered' medicinal herb and a source of podophyllotoxin, were studied in populations growing in different parts of the Kumaun region of the Indian Central Himalaya. Plant growth performance in terms of biomass accumulation and podopyllotoxin levels in the rhizomes collected from eleven natural populations (P1 to P11, altitude ranging from 2740 to 3350 m) were analyzed. Morphological features, e. g., plant height, stem diameter and leaf area were, in general, negatively correlated with an increase in the altitude. Maximum aboveground (8.46 g/individual) and belowground (48.18 g/individual) biomass values were recorded from a population (P9) at the lowest altitude (2740 m) and, in general, the species was found to perform better at the lower altitudes. The podophyllotoxin content of rhizomes ranged between 0.36-1.08% (on dry wt. basis) in different populations, and a positive correlation was observed between podophyllotoxin content and an increase in the altitude.
印度中部喜马拉雅山脉库马盎地区不同区域生长的“极度濒危”药用植物喜马拉雅鬼臼（Podophyllum hexandrum Royle），是鬼臼毒素的来源，对其形态特征进行了研究。分析了从11个自然种群（P1至P11，海拔范围为2740至3350米）采集的根茎中，植物在生物量积累和鬼臼毒素水平方面的生长表现。形态特征，如株高、茎直径和叶面积，总体上与海拔升高呈负相关。在最低海拔（2740米）的一个种群（P9）中，地上部分（8.46克/个体）和地下部分（48.18克/个体）的生物量达到最大值，总体而言，该物种在较低海拔地区表现更佳。不同种群根茎中鬼臼毒素含量在0.36 - 1.08%（以干重计）之间，且观察到鬼臼毒素含量与海拔升高呈正相关。
