E.T. Mwenda ,J.H.Ringo and E.R.Mbega
1Department of Sustainable Agriculture and Biodiversity Ecosystem Management, School of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology (NM –AIST), P.O. Box 447 Arusha, Tanzania.
2Sorghum and Millets Research Program, Tanzania Agricultural Research Institute (TARI – Ilonga), P.O. Box 33 Kilosa, Morogoro, Tanzania.