Shimelis, Hussein Ali.Laing, Mark Delmege.Mangena, Precious.2020-01-292020-01-2920182018https://researchspace.ukzn.ac.za/handle/10413/16834Doctor of Philosophy in Plant Breeding. University of KwaZulu-Natal, Pietermaritzburg, 2018.Abstract available in PDF file.Sweet stem sorghum.Bio-ethanol.Male gametocide.Hybrid development.Genetic diversity assessment and evaluation of the concentration and stage of application of a male gametocide for hybrid development in sweet stem sorghum for bioethanol production.