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RICERCHE PRELIMINARI SULLA “ PSOROSI A CONCAVITÀ GOMMOSE „ DEGLI AGRUMI

G. MAJORANA
Rivista di Patologia Vegetale
Serie III, Vol. 4, No. 2 (Aprile-Giugno 1964), pp. 177-186
Stable URL: http://www.jstor.org/stable/42555868
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
RICERCHE PRELIMINARI SULLA “ PSOROSI A CONCAVITÀ GOMMOSE „ DEGLI AGRUMI
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Abstract

La presenza della malattia della « Psorosi a concavità gommose » (PCG) è stata sperimentalmente accertata in Sicilia. Prove preliminari di trasnmissione meccanica della « PCG », su piantine da seme di Arancio amaro (Citrus aurantium L.) e C. volkameriana Pasq. hanno dato risultati negativi. E' stata, inoltre, effettuata un'accurata valutazione della frequenza di sintomi di clorosi « a foglia di quercia » su piante di diverse specie e cultivar di Agrumi. The presence of « Concave gum psorosis » has been experimentally ascertained in Sicilly. Preliminary sap trasmission tests on seedlings of sour orange (Citrus curantium L.) and G. volkameriana Pasq., have given negative results. Frequency of « oak leaf patterns » on trees of different Citrus species and varieties have been accurately evaluated.

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