Characterization Of Fungi Associated With Leaf Spot Of Mango (Mangifera indica L.)

• Main Author: Omar, Nurul Husna
• Format: Thesis
• Language: English
• Published: 2016
• Subjects: QH1 Natural history (General - Including nature conservation, geographical distribution)
• Online Access: http://eprints.usm.my/31549/

Mangga (Mangifera indica L.) merupakan tanaman buah-buahan yang popular di Malaysia dan mudah terdedah kepada penyakit bintik daun disebabkan oleh pelbagai kumpulan kulat Askomiset dan mitosporik. Penyakit ini akan mengganggu fotosintesis dan mengurangkan pertumbuhan pokok mangga. Kajian ini dijalankan untuk mengenalpasti dan mencirikan kulat yang berasiosiasi dengan penyakit bintik daun mangga. Ujian kepatogenan telah dijalankan untuk menentukan patogen penyebab penyakit ini. Berdasarkan pengecaman secara morfologi, 264 pencilan kulat telah dikenalpasti secara tentatif kepada 11 genus dan 18 spesies, iaitu Colletotrichum (n = 93, C. acutatum dan C. gloeosporioides), Fusarium (n = 90, F. proliferatum, F. semitectum, F. mangiferae, F. solani dan F. chlamydosporum), Pestalotiopsis (n = 28, P. theae dan P. mangiferae), Phomopsis (n = 13, Phomopsis sp.), Curvularia (n = 12, Cur. geniculata dan Cur. lunata), Guignardia (n = 9, G. mangiferae), Lasiodiplodia (n = 9, L. theobromae), Nigrospora (n = 5; N. sphaerica), Botryosphaeria (n = 3, B. dothidea), Nodulisporium (n = 1, Nodulisporium sp.) dan Corynespora (n = 1, Cor. cassiicola). Mango (Mangifera indica L.) is a popular fruit crop in Malaysia and is susceptible to leaf spot disease caused by diverse groups of Ascomycete and mitosporic fungi. The disease will interrupt photosynthesis and reduce the growth of mango trees. The present study was conducted to identify and characterize fungi associated with leaf spot of mango. Pathogenicity test was performed to determine the causal pathogen of the disease. Based on morphological identification, 264 fungal isolates were tentatively identified into 11 genera and 18 species, namely Colletotrichum (n = 93, C. acutatum and C. gloeosporioides), Fusarium (n = 90, F. proliferatum, F. semitectum, F. mangiferae, F. solani and F. chlamydosporum), Pestalotiopsis (n = 28, P. theae and P. mangiferae), Phomopsis (n = 13, Phomopsis sp.), Curvularia (n = 12, Cur. geniculata and Cur. lunata), Guignardia (n = 9, G. mangiferae), Lasiodiplodia (n = 9, L. theobromae), Nigrospora (n = 5; N. sphaerica), Botryosphaeria (n = 3, B. dothidea), Nodulisporium (n = 1, Nodulisporium sp.) and Corynespora (n = 1, Cor. cassiicola).