(DOC) Con Lắc Dơn | Phúc Võ Quang

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Khảo sát hiện tượng nứt trái chôm chôm Rongrien (Nephelium lappaceum Linn) tại huyện Phong Điền, thành phố Cần ThơLe Bao Long 002029

Can Tho University Journal of Science, 2016

The survey was aimed to understand the fruit cracking phenomenon and its relationship with physiological-biochemical characteristics of fruits. The survey was begun in March 2014 and ended in July 2014. Fruit samples were collected randomly from 30 rambutan trees (4 years old) in one orchard under the same care regime at My Khanh Commune-Phong Dien District-Can Tho City. The first collection was on March 15 th , 2014 (two weeks after fruit set) with the interval of 15 days. Results showed that fruit cracking occurred when fruits began to mature (after 12 weeks of fruit set) and then increased until harvest. Heavy rain during rapid fruit flesh growth periods but the peel of fruit has stopped growing and low total Ca 2+ content in the peel are factors related to fruit cracking. At harvest time, the cracking fruits had thin-peel and total Ca 2+ content were lower than those in the normal ones. There is a strong positive correlation between the ratio of fruit cracking and total Ca 2+ content as well as peel thickness of fruits.

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