Genotype-Site Interactions in Growth, Physiological and Biochemical Parameters in Clones of Dalbergia Sissoo Roxb

A plantation trial of six selected clones of Dalbergia sissoo Roxb. laid out in randomized block design at four sites in northern India during July, 1996 was evaluated for growth, physiological and biochemical parameters. Genotype-site interactions were significant for collar diameter increment, photosynthetic rate, transpiration rate, stomatal conductance, photosynthetic pigments, total soluble protein, total soluble sugar and starch content at 5 per cent level of significance. The variability estimates for these characters also indicated strong genetic control than the environment. However, stomatal conductance amongst these clones exhibited strong influence of environment that was non-additive in nature.