Hi K. Suresh Naidu,

Please go through the pdf attachment and the links given below for the answer.

http://www.biotecharticles.com/Agriculture-Article/Conversion-of-C3-to-C4-Plants-The-Case-of-C4-Rice-2968.html

http://cordis.europa.eu/result/rcn/146147_en.html

http://www.science20.com/humboldt_fellow_and_science/blog/converting_c3_plant_rice_c4-80544

Best of Luck

 Thank you arvind singh sir for your help. The review paper of Christoph Peterhansel was so good. 

Please find the research articles and links which may help you

https://au.answers.yahoo.com/question/index?qid=20080605083056AAFaHbF

http://www.sciencedirect.com/science/article/pii/S1573521409000025

http://www.biotecharticles.com/Agriculture-Article/Conversion-of-C3-to-C4-Plants-The-Case-of-C4-Rice-2968.html

Thank you salamma sugali mam for your help. Which helps me further understanding of the topic