Abstract
Recently, attempts have been made to produce sweet cherry in the warm region of Japan, although the occurrence of double fruit, resulting from double pistil formation, and poor fruit set due to frequent physiological fruit drop have become serious problems preventing stable production; however, the inducing factors have not been clarified. Therefore, we investigated the effects of environmental and nutritional conditions on the occurrence of double pistils and poor fruit set. Based on those results, we studied the regulation of pistil doubling and fruit set in this region. In this review, we summarize our studies on the reproduction of sweet cherry in a warm climate.
