Effects of Growth Substances on Strawberry Growth1

Abstract

Abstract 6-(Benzylamino)-9-(2-tetrahydrophyranyl)-9H-purine (PBA) promoted production of stolons, branch stolons, branch crowns and daughter plants in ‘Sparkle’ Junebearing and ‘Ozark Beauty’ everbearing strawberries ( Fragaria × ananassa Duch.). Gibberellic acid (GA 3 ) induced no promotion on either cultivar. Combinations of PBA and GA 3 induced a greater effect on stolon and daughter plant production for ‘Ozark Beauty’ than did PBA alone. Increase in the number of daughter plants was proportional to the number of stolons produced. PBA suppressed rooting of the daughter plants. Addition of GA 3 to the foliar treatment did not overcome rooting suppression of PBA.