Abstract:Kanker jeruk adalah penyakit penting tanaman jeruk di dunia, termasuk Indonesia. Identifikasi patogen oleh petani masih berdasarkan gejala penyakit, padahal patogen memiliki keragaman virulensi, patotipe, genetika, dan tanaman inang. Tujuan penelitian untuk mengetahui keragaman morfologi, fisiologi, biokimia, molekuler, dan virulensi dari bakteri kanker jeruk. Bakteri diisolasi dari sampel lemon (Citrus limon), nipis (C. aurantifolia), purut (C. hystrix), siam (C. sinensis), dan fortunella (Fortunella margarit… Show more
“…Citri with symptoms that appear as white spots under the leaves, yellow spots which will turn black brown and will form necrotic lesions. According to Kristi et al (2022) that cancers that infect leaves have general symptoms, namely the presence of round yellow lesions measuring 1 mm, over time they will turn into brown lesions with a size of 10 mm surrounded by a circle of chlorosis and in the middle having a rough texture like cork. The general symptoms that appear on citrus leaves affected by this bacteria are brownish chlorosis lesions surrounded by a yellow halo, the lesions will rise to the surface and form cork tissue.…”
The purpose of this case study is to determine the severity of citrus leaves using Plantix software and ImageJ software. Based on the results of this case study, it was found that the severity of the disease using ImageJ software was on citrus leaves at the first location (10.641%), citrus leaves at the second location (53.278%), and citrus leaves at the third location (15.828%) which were generally the fruit plants caused by fungi and based on the results of Plantix software data, diseases in the first, second, and third locations of citrus leaves were caused by bacterial diseases. Based on the results of bacterial cell culture, isolates were found to be round white in color with a slight yellowness which is a characteristic of Xanthomonas axonopodis bacteria with a large number of ±12 colonies and a smaller number of ±35 colonies. Using software and imageJ can help farmers to find out the types of pests that attack citrus plants so that farmers can handle plants to minimize damage to citrus plants caused by pests.
“…Citri with symptoms that appear as white spots under the leaves, yellow spots which will turn black brown and will form necrotic lesions. According to Kristi et al (2022) that cancers that infect leaves have general symptoms, namely the presence of round yellow lesions measuring 1 mm, over time they will turn into brown lesions with a size of 10 mm surrounded by a circle of chlorosis and in the middle having a rough texture like cork. The general symptoms that appear on citrus leaves affected by this bacteria are brownish chlorosis lesions surrounded by a yellow halo, the lesions will rise to the surface and form cork tissue.…”
The purpose of this case study is to determine the severity of citrus leaves using Plantix software and ImageJ software. Based on the results of this case study, it was found that the severity of the disease using ImageJ software was on citrus leaves at the first location (10.641%), citrus leaves at the second location (53.278%), and citrus leaves at the third location (15.828%) which were generally the fruit plants caused by fungi and based on the results of Plantix software data, diseases in the first, second, and third locations of citrus leaves were caused by bacterial diseases. Based on the results of bacterial cell culture, isolates were found to be round white in color with a slight yellowness which is a characteristic of Xanthomonas axonopodis bacteria with a large number of ±12 colonies and a smaller number of ±35 colonies. Using software and imageJ can help farmers to find out the types of pests that attack citrus plants so that farmers can handle plants to minimize damage to citrus plants caused by pests.
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