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侧柏叶枯病病原菌研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1992年01期
Page:
59-65
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
THE CAUSAL FUNGUS OF LEAF BLIGHT OF PLATYCLADUS ORIENTALIS
Article ID:
1000-2006(1992)01-0059-07
Author(s):
Dai Yusheng (Forestry Reseatch Institute of Jiangsu Province)Wang Xuedao (Diversified Economy Bureau of Xuyi County)Lin Qirui
Forestry Station of Xuyi County
Keywords:
Platycladus arientalis Leaf blight Cloroscypha flatycladus Medium
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1992.01.015
Document Code:
A
Abstract:
The leaf blight of Platycladus orientalis in the hilly mountains of Xuyi County, Jiangsu Province is caused by Chlaroscypha platycldus Dai sp. nov. , a new parasitic cup fungus. This fungus can infect both young and matural trees. The current leaves are infected in June and the symptom appears in late February of the next year with a incubation period about 250 days. The apothecia are produced on the dead leaves of Platycladus arientalis in June, cup-shaped olive green with 0. 21 to 0. 46 mm in diameter. The asci are cylinder-shaped, no blue reaction with Metxer’ s reagent, eight spores within each ascus measuring 80-129×10-15 μm. Ascospores are oval, hyaline, and unicelular 15-18μm long and 8-15μm wide. The mycelium on PDA medium shows white to purple-red, produces olivecolour grains, but difficultly forms ascospores. The optimum temperature for ascospore germination is 25℃ to 30℃ and for mycelium growth is 15℃ to 25℃. The optimum pH for mycelium growth is 4. 5 to 6. 5.

References

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Last Update: 1900-01-01