01803naa a2200193 a 450000100080000000500110000800800410001910000170006024501080007726000090018552011960019465300210139065300130141165300260142465300280145070000200147870000180149877300930151611305552021-01-25       2020    bl uuuu     u00u1 u    #d1 aPETRI, J. L.  aPlant Growth Regulators in Flowering Alternation of the Fuji Suprema Apple Tree.h[electronic resource]  c2020  aResearch  on  alternate  bearing  in  apple  trees  is  usually  focused  on  chemical thinning  techniques,  but  in  recent  decades  synthetic  bioregulatorshave  proven  to  be effective  in  promoting  or  inhibiting  floral  induction  in  apple  trees.  However,  the  results  can  be variable since some cultivars are prone to alternation, as Fuji and its clones. The objective of the present  study  was  to  observe  the  effect  of  naphthalene  acetic  acid  (NAA),  Ethephon, and their combinations in the formation of flowering buds avoiding flowering alternation, in Cv, Fuji Suprema.Place and Duration of Study:The experiments were carried out in southern Brazil, municipality of Ca??ador / SC, during the cycles from 2014 to 2019, in the cultivar Fuji Suprema / Marubakaido / M9, with 12 years old.Methodology:Several variables were evaluated such as flowering return, fruit set, yield, number of fruits per plant, average fresh fruit mass, and biennial bearing index (BBI).Results:The  results  were  variable  and  showed  that  NAA  and  Ethephon  had  little  effect  on reducing flowering alternation when applied during the vegetative phase of the Fuji Suprema apple.  abiennial bearing  aethephon  aMalus domestica Borkh  anaphthalene acetic acid1 aSEZERINO, A. A.1 aFENILI, C. L.  tJournal of Experimental Agriculture International, Londongv. 42, n. 10, p. 11-18, 2020.