The influence of gibberellic acid on growth and development of callas cultivated in the greenhouse

Abstract

Popular plant known and used as a cut flower or as a pot plant, Calla is less pretentious to the environmental conditions and easy to grow. In this paper it is analyzed the influence of gibberellic acid (GA3) treatment on Zantedeschia (cv. 'Black Eyed - Beauty') plants grown in the greenhouse soil. Treatment with GA3 has been achieved by soaking the tubers for 30 minutes in 250 ppm solution. The start of the vegetation period and the appearance of the floral stems were favored by GA3 treatment, causing early flowering with 2-10 days. Also, the number of leaves and inflorescences increased, but the height of the plant and the floral stems was reduced.