Minitubérculos produzidos ‘in vitro’ como método de propagação alternativa para a produção comercial de batata (Solanum tuberosum L.)

Abstract

The aim of this study is to test the viability of in vitro produced mini-tuber as potato propagules (Jeat Bintje cultivar) under field conditions. We set up a 8X2 factorial type experiment, testing eight different growth regulators balances and the number of explants per vial (1 and 4 explants/vial). The evaluated variables were: number of mini-tubers, total weight and average weight of mini-tubers. The number of mini-tubers produced shows no significant difference between treatments was observed. The use of auxin concentration 1mg/l produced the best results in total and average weight. The number of explants per vial also produced significant difference in the mini-tuber average weight, one explants per vial treatment (1 explant /10 ml medium) showing better results than four explants per vial (1 explant / 6.25 ml media). Subsequently, the material was planted first in a greenhouse, and then transplanted to beds under conditions similar to the field. Seventy percent (70%) of the planted material yielded tubers, indicating the possibility of using mini-tubers as field propagules. Other experiments are suggested to optimize the production of tubers in the field using mini-tubers as propagules.