Nghiên cứu tạo cây dưa kiểng mang nhiều giống dưa, nhiều tầng trái bằng kỹ thuật ghép

Abstract

Three experiments were conducted at the High-Tech greenhouse, Can Tho University from July 2023 - February 2024, to determine the type of melon, the number of grafting layers and the appropriate pot volume to help the plant bear many fruits and achieve a high rate of finished pots used as ornamental plants. Using watermelon, cantaloupe and honeydew melon, wedge grafting technique onto squash rootstock and  grafting approach (N-shaped matching cuts) with 1, 2 and 3 layers, grow squash rootstock (double rootstock is grafting the stem of 2 squash roots at the cotyledon position) in plastic pots. The results of all 3 types of melon grafted onto a double luffa rootstock showed no significant difference in the rate of sucessful plant pots through statistical analysis (ranging from 71.3-77.9%). Grafting a layer with 3 melon buds bearing 3 fruits on a double luffa rootstock in a 16-liter pot achieved from 93.7 and 100% of sucessful   plant pot rates in 2 experiments, and statistical significantly diferences higher than grafting 5 and 7 buds with a 24-liter pot. Grafting 2 layers with 6 fruits and 3 layers with 9 fruits, 24-liter pots both had very low sucessful plant pots (33.3%). The both sucessful  pots of ornamental melon grafted with 1 and 2 layers  had plant anhd pot heights under 93 cm and canopy diameter under 61 cm. It is recommended to grow ornamental melon grafted 1 layer on a double luffa rootstock, with 3 fruits on the plant.