January
2003
, Volume
87
, Number
1
Pages
75
-
77
Authors
J. K.
Uyemoto
,
United States Department of Agricultural-Agricultural Research Service
, and
L. R.
Bulluck
,
III
,
Department of Plant Pathology, University of California, Davis 95616
;
Sarah
Pethybridge
,
University of Tasmania-North West Centre, Burnie, Tasmania, 7320, Australia
;
Bruce
McCorkell
,
Department of Primary Industries, Water and Environment, New Town, Tasmania, 7001, Australia
; and
W. K.
Asai
,
(formerly) University of California Cooperative Extension, Stanislaus County, Modesto 95358
Affiliations
Go to article:
RelatedArticle
Accepted for publication 3 September 2002.
Abstract
ABSTRACT
Natural spread of Prune dwarf virus (PDV) and Prunus necrotic ring-spot virus (PNRSV) was monitored among healthy trees of six peach (Prunus persica (L.) Batsch) cultivars interplanted into a mature peach orchard between virus-infected trees of the cultivar Carson. Spread of PDV to a few trees of cvs. Andross, Carson, and Halford occurred during bloom just after the dormant test trees were planted in the orchard, as indicated by serological and biological assays during the next season. In contrast, virus infections in cvs. Dr. Davis, Loadel, and Ross were not detected until the fourth to sixth growing seasons. By the seventh season, cumulative transmissions for PDV and PNRSV were 41 and 9, respectively, which included double virus infections in five test trees. Significant differences in cumulative transmission of PDV but not of PNRSV occurred by the fourth season (P = 0.0020). Overall, virus infections among the six cultivars ranged from 70 to 100%.
JnArticleKeywords
Additional keywords:
horizontal spread,
peach stunt disease,
Prune dwarf virus,
Prunus necrotic ring spot virus
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ArticleCopyright
© 2003 The American Phytopathological Society
