10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 4 2015 (October - December) Salicylic acid and lessThan i greaterThan Piriformospora indica lessThan /i greaterThan colonized plants were reported as potent enhancers of growth and photosynthetic activity. The present study was conducted to study the comparative alteration of plant growth and photosynthetic activity of the medicinal plant lessThan i greaterThan Artemisia annua lessThan /i greaterThan treated with lessThan i greaterThan P. indica lessThan /i greaterThan and salicylic acid under lessThan i greaterThan in vitro lessThan /i greaterThan condition. The lessThan i greaterThan in vitro lessThan /i greaterThan grown plantlets treated with lessThan i greaterThan P. indica lessThan /i greaterThan showed a higher value in all the growth parameter and photosynthetic pigments content followed by salicylic acid. The callus showed highest values of fresh weight on salicylic acid treatment. PORI DEKA AND DEBABRAT BAISHYA Artemisia annua , in vitro, callus and plant growth 345-351