Abstract

Zucchini plants contain several vitamins such as vitamin B complex, vitamin C, vitamin A, fiber and potassium which can maintain human health. However, of the many nutritional contents contained, zucchini is still not widely known by the public. The relationship between phenology and several varieties of zucchini plants can add information about the appearance and results of each variety of zucchini plants in terms of plant phenology so that zucchini production can be maximized. The experiment designed used Randomized Block Design with 8 treatment and 4 replication, namely G0VZ = 0 ppm, Zacky Z-6; G0VC = 0 ppm, Carissa; G0VB = 0 ppm, Black Scoop; G0VS = 0 ppm, Shuky; G150VZ = 150 ppm, Zacky Z-6; G150VC = 150 ppm, Carissa; G150VB = 150 ppm, Black Scoop and G150VS = 150 ppm, Shuky. The results show that the phenological diversity of four varieties with different gibberelin concentration showed significant differences, where the gibberellin concentration treatment could accelerate the aging phase of plants in four varieties compared to the treatment without gibberellin. In addition, growth parameters in the form of fresh and dry weight with the Carissa variety had the best growth compared to other varieties, but were not significantly different from the Black Scoop variety. The increased growth in the Carissa variety with 150 ppm gibberellin treatment was directly proportional to the increase in harvest yield, include fruit set, total of fruit and fruit weight.