Open Access Research Paper Views (765) In vitro regeneration of niger (Guizotia abyssinica L.F.) Cass.) Tesfaye Disasa, Tileye Feyissa, Kefle Dagne Int. J. Biosci. 1(6), 110-118, December 2011. Keywords: Acclimatization, Guizotia abyssinica, In vitro regeneration, Rooting Details