نوع مقاله : علمی پژوهشی
نویسندگان
1 گروه فیزیولوژی و فناوری پس از برداشت، پژوهشکده مرکبات و میوه‌های نیمه‌گرمسیری، موسسه تحقیقات علوم باغبانی، سازمان تحقیقات، آموزش
2 پژوهشکده مرکبات و میوه‌های نیمه‌گرمسیری، موسسه تحقیقات علوم باغبانی، سازمان تحقیقات، آموزش و ترویج کشاورزی، رامسر، ایران
3 گروه ژنتیک و بهنژادی، پژوهشکده مرکبات و میوه‌های نیمه‌گرمسیری، موسسه تحقیقات علوم باغبانی، سازمان تحقیقات، آموزش و ترویج کشاورزی،
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Fungal rots are the most important cause of fruit loss in storage and cold storage. This research was conducted in two experiments, including the effect of a mineral fungicide in reducing the growth of Alternaria, green and blue mold in laboratory conditions and its effect on decreasing the rot caused by green and blue mold and the quality of Thomson oranges along with Britex Wax, Tecto fungicide and ckeck treatments. During storage in packinghouse and cold storage, sampling was done at 0, 30, 60 and 90 days intervals in Thomson oranges. According to the first experiment result, hyfal growth of Alternaria alternata, Penicillium digitatum and P. italicum was decreased by mineral fungicide. In treated fruits, the least and the most infection was in Tecto and control treatments respectively. Mineral fungicide and Wax treatments in various experiments had almost the same effects on the quality of treated fruits. fruit quality experiment showed that among the treatments, fruits covered with wax had the least weight loss in common (3.39%) and cold storages (2.94%). The lowest fruit skin thickness was in fruits treated by mineral fungicide (3.28mm in packinghouse and 3.51mm in cold storages). Some characters such as juice percentage, TSS, TSS/TA, TA, TI, L* and a*, antioxidant capacity, had not significant differences with the control. A decreasing trend of phenol was observed in all treatments. In general, the amount of ascorbic acid was different in all treatments compared to the control. The highest intensity and percentage of pitting belonged to mineral fungicide treatment. In general, mineral fungicide did not have a negative effect on the fruit nutritional and chemical characters, but it caused water loss and drying of the fruit skin, which has a negative effect on the marketability of the fruit.
کلیدواژه‌ها [English]
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