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Grapevine twigs tip die-back disease in Egypt [electronic resource].

By:

Aly, A. Z

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Language: English Summary language: Arabic Description: p.45-56Other title:

مرض الموت الرجعي لأطراف أغصان العنب فى مصر [Added title page title]

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Egyptian journal of phytopathology, 2002 v. 30 (1) [electronic resource].

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In: Egyptian journal of phytopathology 2002.v.30(1)Summary: Several fungi cause grapevine twigs tip die-back disease in Egypt. Botryodiplodia theobramoe Pat; Phomopsis viticola Sacc. and Fusarium solani (Mart.) Sacc. were the most frequently isolated fungi from diseased twigs. These fungi caused the disease symptoms either in the current growing season or in the next. Among the isolated fungi B. theobromae was the most pathogenic one in the current growing season. It showed twigs tip die-back and long necrotic parts in pathogenicity test, while, P. viticola and F. solani were the lowest, in this respect. The fungi tested were able to cause twigs tip die-back and bads mortality in the following season. B. theobromae isolates were categorized into 3 biotypes, biotype 1 included El-Sharkia and El-Giza isolates, while, biotype 2 included North Sinai isolates and the third one included El-Ismaelia isolates.

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Several fungi cause grapevine twigs tip die-back disease in Egypt. Botryodiplodia theobramoe Pat; Phomopsis viticola Sacc. and Fusarium solani (Mart.) Sacc. were the most frequently isolated fungi from diseased twigs. These fungi caused the disease symptoms either in the current growing season or in the next. Among the isolated fungi B. theobromae was the most pathogenic one in the current growing season. It showed twigs tip die-back and long necrotic parts in pathogenicity test, while, P. viticola and F. solani were the lowest, in this respect. The fungi tested were able to cause twigs tip die-back and bads mortality in the following season. B. theobromae isolates were categorized into 3 biotypes, biotype 1 included El-Sharkia and El-Giza isolates, while, biotype 2 included North Sinai isolates and the third one included El-Ismaelia isolates.

Summary in Arabic.

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