Abstract

• The experiment was conducted at the field of VFRDC (Vegetable and Fruit Research and Development Center) Yemon, Hlegu Township, Yangon Region from June 2018 to September 2018. The Key point of the experiment was the effect of ethylene treatments on female flowers emergence and the fruit production of Trichosanthes cucumerina L. (Bon-Lon) plants. The experiment was set up in a randomized complete block design (RCBD) with three treatments (1.5ml, 1.0ml, 0.5ml) and each replicated by four. The control plants received none of ethylene treatments. In the experiment, ethylene solutions were sprayed to the plants in alternate weeks, before flower bud emergence. The ethylene solutions applied two times during the life cycle. The statistical results showed that the plant height of ethylene treated plants were reduced than control plants and also the stem girth, number of nodes, internode length, leaf length and leaf width as well. However, the reverse effect of ethylene was observed in the female flower emergence and the fruit yield. Among treatments, T2 (1.0ml) treated plant had higher female flowers and fruit yield. Regarding to the fruit quality, the most sweetness fruit were obtained from T2 (1.0ml). The experiment showed that T2 (1.0ml) ethylene was the proper dosage for female flower, fruit quality and fruit production in Bon-Lon plants.