A STUDY ON THE AGRO-BIOLOGICAL CHARACTERISTICS OF “DO NGOT” (RED AND SWEET) PUMMELO CULTIVAR GROWN IN HOAI DUC DISTRICT, HA NOI CITY

Abstract

Considered as one of preciously valued germplasm of pummelo in Day river delta cultivated in Duong Lieu commune, Hoai Duc district, Ha Noi city, “Do Ngot” (red and sweet) cultivar has paid an important role in improving living standard of local people. Results conducted from the research into its agrobiological characteristics, growth and development showed  that the trees of “Do Ngot” cultivar are healthy, rarely affected by serious pests and diseases, early blooming (about 20 days earlier than other pummelo varieties cultivated in the region), quite high rate of fruiting set (2.14%), high yield (194.1 kg/tree). The fruit is easy to peel, drained juice vesicle, crispy with strong sweet taste. It is also specially mentioned that high concentration of lycopene, beta-carotene and vitamin C that are helpful for mankind health were recorded in the fruit of the cultivar (2.18 mg/100 mg, 0.33 mg/100 mg and 76.00 mg/100 g respectively).