Effect of paclobutrazol on in vitro formation of potato microtubers and their sprouting after storage

Abstract

Paclobutrazol, the gibberellin biosynthesis inhibitor, accelerated in vitro tuber initiation of potato cv. Rema and increased the uniformity of tuberization period. However, the high concentrations (10-1000 mg l-1) of this retardant, strongly decreased mass and/or number of microtubers. The microtubers were harvested and stored in darkness (22±2°C) for 250 d. After this period both sprouting and growth of sprouts were affected by previous paclobutrazol treatment. © 1994 Institute of Experimental Botany.