Conclusion
It is concluded from current research work that Different drought levels had substantial effects on physiological traits of wheat. Photosynthetic pigments and Relative Water Contents were decrease when increase in drought stress. It is observed that over expression of genes (TaLhca1, TaLhca2, TaLhca3, TaLhcb1, TaLhcb4 and TaLhcb6 ) that encodes for LHCI and LHCII proteins is directly proportional to drought stress. Among the studied genotypes wheat variety Chirya-1 and SD-28 performed well with higher level of gene expression under drought stress condition; considered drought tolerant genotypes with potential to enrich the genetic background of locally adapted wheat lines against drought stress.