In vitro selection of blackberry ( 'Tupy') plants resistant to using gamma ray-irradiated shoot tips.

Blackberry is an economically important crop in Mexico, and its yield is substantially reduced by gray mold, a disease caused by . One of the means to obtain -resistant plants is gamma irradiation. Shoot tips of in vitro-micropropagated blackberry plants ( 'Tupy') were irradiated with five doses of Cobalt-60 gamma radiation (0, 15, 30, 45, and 60 Gy) and cultured on Murashige and Skoog basal medium containing 1.