Resistance of Citrus Rootstocks toPhytophthora citrophthoraDuring Winter Dormancy

1 January 1984

journal article
research article
Published by Scientific Societies in Plant Disease

Vol. 68 (6) , 502-505
https://doi.org/10.1094/pd-69-502

Abstract

Resistance of 70 citrus genera, species and cultivars to P. citrophthora was investigated during winter dormancy. Aeglopsis chevalieri; Citrus yatsushiro; C. sulcata; C. aurantium ''Alibert'' and ''Granito''; C. reshni ''Kibris''; Poncirus trifoliata ''Yerli'', ''Jacobson'', ''SEAB'', ''Luisi'', ''Rubidoux'', ''Benecke'', ''Rich'', ''Ferme Blanche'', ''Troyer'' citrange, and C. ampullaceae were found to be very resistant. C. celebica; C. aurantium ''Cardosi'', ''Santucci'' and ''Curacao''; C. pennivesiculata ''CRC''; C. depressa ''CRC''; Carrizo citrange, C. trifoliata ''Menager''; C. wilsonii; and C. webberi ''SRA'' were resistant. C. keraji; C. nobilis; C. aurantium ''Azaguie''; C. trifoliata ''Christian'', ''Town'', and ''Yamagushi''; C. assamensis; and C. micrantha were very susceptible. C. aurantium ''Yerli'' showed medium resistance and ''Okan'' was susceptible. Among the citrus rootstocks used widely, C. taiwanica, C. macrophylla, C. aurantium ''Brazilian'', and C. junos were ranked as susceptible to P. citrophthora.

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