Cornell University, affiliation not provided to SSRN, Cornell University, Cornell University, International Maize and Wheat Improvement Centre, affiliation not provided to SSRN, affiliation not provided to SSRN, CGIAR - International Livestock Research Institute (ILRI), affiliation not provided to SSRN, Government of India - Indian Council of Agricultural Research, International Rice Research Institute (IRRI), Indian Council of Agricultural Research (ICAR) - National Rice Research Institute and Cornell University