Open Access Research Paper Views (238) Download (7) Demarcating day-light-length from temperature effects in PGMS rice using back tracking method Njiruh Paul Nthakanio, Xue Qingzhong Int. J. Agron. Agri. Res.5( 5), 40-52, November 2014. Key: Critical Sterility PointForward trackingPGMS geneRiceShort day Details