|
KMID : 0379120000280040177
|
|
Korean Journal of Mycology
2000 Volume.28 No. 4 p.177 ~ p.179
|
|
|
Occurrence of Rhizopus Soft Rot on Peach (Prunus persica var. vulgaris) Caused by Rhizopus nigricans in Korea
|
|
Kang, Soo Woong
Park, Chang Seuk/Kwon, Jin Hyeuk
|
|
|
Abstract
|
|
|
|
A soft rot of fruits caused by Rhizopus nigricans occurred on peach (Prunus persica var. vulgaris) in The Chinju City Agricultural Products Wholesale Marke during in summer season of 2000. The disease infection usually started from wounding after harvest fruits, and then moved to outside. At first, the 1started with water soaked and rapidly softened and diseased area gradually expanded. In severely infected film house, the rate of infected fruits reached 65.2%. Numerous sporangiospores were produced on the diseased Emits. Most of the sporangiospores were appeared to be readily dispersed in the air. The mycelia grew surface of fruits and produced stolons. Colonies on potato dextrose agar at 25∼30℃ white cottony at first becoming heavily speckled by the presence of sporangia and the browinish bledc at maturity, spreading rapidly by means of stolons fired at various points to the substrate by rhizoids. Sporangia were 85.3∼243.5×53.4∼219.2 ㎛ in size and were globose or sub-globose with somewhat flattened base. The color of sporangia was white at first and then turned black with many spores, and never overhanging. Sporangiophores were 8.9∼36.6 ㎛ in width, smooth-walled, non-septate, light brown, simple, long, arising in soups of 3∼5 from stolons opposite rhizoids. Sporangiospores was 9.7∼24.8×5.9∼15.8 ㎛, irregular, round, oval, elongate, angular, and browinish-black streaked. Columella was 70.2×149.7 ㎛. brownish gray, and umberella-shaped when dehisced. The causal organism was identified as. Rhizopus nigricans Lind on the basis of the morphological characteristics of the fungus. Rhizopus soft rot on peach (Prunes persica) caused by the fungi has not been reported in Korea. This is the first report of rhizopus soft rot on peach caused by Rhizopus nigricans in Korea.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|
|