AUXINS INCREASE FRUIT SIZE OF 'BING' (PRUNUS AVIUM L.) CHERRY IN A WARM CLIMATE
The main cherry cultivar grown in the warm climate of Israel, Bing, produces relatively small fruit. Over three consecutive years (2003-2005), application of 50 mg L-1 2,4-dichlorophenoxypropionic acid (2,4-DP) as butoxyethyl ester (Power), or 10 mg L-1 3,5,6-trichloro-2-pyridyloxyacetic acid (3,5,6-TPA) as free acid (Maxim), or 25 mg L-1 2,4-dichlorophenoxyacetic acid (2,4-D) + 30 mg L-1 naphthaleneacetic acid (NAA) (0.3% Amigo) at the beginning of pit-hardening, when fruitlet diameter was ca. 13 mm, caused an appreciable and significant increase in fruit size and total yield. Anatomical studies revealed that the main effect of these synthetic auxins was via direct stimulation of fruit cell enlargement. The above auxins had no negative effect on fruit quality, either at harvest or after one month at 0°C storage, or on the return yield of the trees in the following year.
Stern, R.A., Applebaum, S., Flaishman, M. and Ben-Arie, R. (2008). AUXINS INCREASE FRUIT SIZE OF 'BING' (PRUNUS AVIUM L.) CHERRY IN A WARM CLIMATE. Acta Hortic. 774, 243-250
auxins, cherry, fruit size, Prunus avium