Changes in biochemical attributes during acclimatization of Polygonum species at different altitudes in Garhwal Himalaya

Some biochemical attributes in three Polygonum species viz. P. amplexicaule, P. macrophyllum and P. rumicifolium were analyzed dnring acclimatization at three different altitudes in Garhwal Himalaya. In general, all the species did not show much difference along with altitudinal changes, especially within Tungnath (3600m) and Mastura (1700m), although some minor changes were observed which might be due to altitudinal adaptation of these species. Except P. amplexicaule, the plants of other two species got deteriorated during four to six months acclimation at Srinagar (550m), probably due to marked changes in climatic conditions. Study indicates that Mastura (1700m) can be an ideal site for the cultivation of these species without any major change in their biochemical attributes.