INDUCCIÓN Y DIFERENCIACIÓN FLORAL DE CUATRO CULTIVARES DE MANZANO EN CHILE Flower induction and differentiation of four apple cultivars in Chile

摘要: A B S T R C The present study was conducted in San Clemente, Chile (35°33' lat; 71°24' W long), during the 19961997 and 1997-1998 growing seasons, aimed to determine approximate induction flower differentiation dates on apples (Malus domestica Borkh.) cvs. Royal Gala, Fuji, Red Chief Braeburn. Induction date determined by applying gibberellin GA 4+7 (l00 mg kg -1 ) weekly manual thinning, from full bloom up 70 days after (DDPF). Flower evaluated collection tissue dissection of floral buds, between December 1996 June 1997. period maximum sensitivity could only be application, which found 7 21 DDPF for R. Trials related with had high variation coefficients (22 57%), probably due rootstock (seedling), low G concentration or inefficient mainly tree vigor, as shown shoot length, 50 cm average, is almost twice that recommended other foreign literature. Nevertheless, data suggest this event occurred about 14 experiments, around 35 thinning experiments. January 6, 1997 (100 DDPF) cv. Braeburn, 20 (114 Gala.