Inter-clonal Variation in Dalbergia sissoo Roxb. with Respect to Photosynthetic Rate, Transpiration Rate and Stomatal Conductance in Different Climatic Zones

Inter-clonal variation in Dalbergia sissoo was found significant for photosynthetic rate, transpiration rate and stomatal conductance in different sites. Clones from the states of Uttar Pradesh, Haryana and Uttarakhand showed higher photosynthetic rate, transpiration rate and stomatal conductance in comparison to the clones from the state of Rajasthan. Effect of sites on these parameters of clones was also observed significant. Clones showed the maximum value for these parameters at Bithmera (Hisar, Haryana), while minimum at Pandhori Mindo Mind (Hoshiarpur, Punjab). The two-factor interaction effect between clones and site was also found significant at P≤0.05. On the basis of the observations recorded on physiological parameters; it was revealed that clones C019, C034, C066 and C192 are well adapted at all sites than the clones C083 & C087.