In vitro Effect of Activated Charcoal and microcutting type on microtuberization of potato CV. Desiree

Abstract

Tips of sprouts (0.3–0.5 mm) of Desiree potato sterilized and cultured on proliferation media. The cultures were incubated for 35 days at 16 hours photoperiod at 25 ± 2 º C under 1000 loux light intensity. In vitro – proliferated shoot were cut at 1-2 cm into three types of microcuttings (i.e. apical, subapical and basal) and cultured onto MS media supplimented with 10% sucrose for microtuberization. Activated Charcoal treatments 0.0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 gm /l were added to the microtuberization media .The weight, size and eyes number cultured of microtubers were significantly increased when basal microcuttings cultured on microtuberization media supplimented with 3gm /l charcoal while 2gm/l charcoal with the subapical cuttings resulted in high proliferation rate