• Title/Summary/Keyword: 바나나

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Occurrence of Rhizopus Soft Rot on Musa sapientum Caused by Rhizopus stolonifer in Korea (Rhizopus stolonifer에 의한 바나나 무름병 발생)

  • Kwon, Jin-Hyeuk
    • The Korean Journal of Mycology
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    • v.35 no.1
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    • pp.54-57
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    • 2007
  • Rhizopus soft rot caused by Rhizopus stolonifer occurred on banana (Musa sapientum) in the box at Jinju City Wholesale Market of Agricultural Products at Gyeongnam province in Korea. The infected fruits were rapidly water-soaked, softened, blackened and eventually rotted. They were infected from wounds at harvest time. The colony of the isolate from the infected fruit was white to light brown and formed many sporangiospores. The optimum growth temperature of the fungus on potato dextrose agar was $30^{\circ}C$. Sporangiophores were $12{\sim}26\;{\mu}m$ in width. Sporangia were globose or hemispheric, white at first and changed gradually to black, and $83{\sim}195\;{\mu}m$ in size. Columella were hemispheric, and $72{\sim}125\;{\mu}m$ in size. Sporangiospores were irregular round or oval, brownish-black and $9{\sim}20{\times}7{\sim}8\;{\mu}m$ in size. On the basis of symptom, mycological characteristics and pathogenicity to banana, the causal fungus was identified as Rhizopus stolonifer. This is the first report of Rhizopus soft rot by R. stolonifer on banana in Korea.

Residual Characteristics of Methyl Bromide and Hydrogen Cyanide in Banana, Orange, and Pineapple (수입과실류(바나나, 오렌지, 파인애플)를 대상으로 Methyl Bromide (CH3Br)와 Hydrogen Cyanide (HCN) 훈증소독 처리 후 약제 잔류 특성)

  • Park, Min-Goo;Sung, Bo-Kyung;Cho, Jae-Young
    • Journal of Applied Biological Chemistry
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    • v.54 no.3
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    • pp.214-217
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    • 2011
  • Fumigant, methyl bromide which is used in most countries for plant quarantine, has been designated and under control as ozone depleting substance. For developing alternative chemicals for methyl bromide, many countries have been intensifying their capacity. This study was carried out to investigate the residue patterns of hydrogen cyanide which is commonly used for plant quarantine. Hydrogen cyanide was treated onto the orange, banana, and pineapple at recommended and double doses and then sampling was done at 1 and 3 day after fumigation treatment. Residue of hydrogen cyanide was found safe because average residue levels on orange, banana, and pineapple after 3 days of fumigation treatment were $0.57{\pm}0.05$, $0.21{\pm}0.17$, and $0.41{\pm}0.08$ ppm, which were lower than the MRLs of Korea (5 ppm), Japan (5 ppm), USA (50 ppm), and Canada (25 ppm). Hydrogen cyanide are expected to be used as alternative chemicals for methyl bromide fumigant for orange, banana, and pineapple.