August
2000
, Volume
84
, Number
8
Pages
885
-
891
Authors
Rebecca C.
Grube
,
Graduate Research Assistant
, and
Yiping
Zhang
,
Former Graduate Research Assistant, Department of Plant Breeding, Cornell University, Ithaca, NY 14853
;
John F.
Murphy
,
Associate Professor, Department of Plant Pathology, Auburn University, Auburn, AL 36849
;
Fernando
Loaiza-Figueroa
,
Former Graduate Research Assistant
, and
Vincent K.
Lackney
,
Research Support Specialist, Department of Plant Breeding, Cornell University
;
Rosario
Provvidenti
,
Professor, Department of Plant Pathology, NYSAES-Cornell University, Geneva, NY 14456
; and
Molly K.
Jahn
,
Associate Professor, Department of Plant Breeding, Cornell University
Affiliations
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RelatedArticle
Accepted for publication 3 May 2000.
Abstract
ABSTRACT
A small-fruited pungent pepper accession, Capsicum frutescens ‘BG2814-6’, is resistant to several isolates of Cucumber mosaic virus (CMV). Resistance in BG2814-6 is incompletely penetrant and is controlled by at least two major recessive genes. The accession BG2814-6 and C. annuum ‘Perennial’, the leading source of CMV tolerance, appear to share one or more CMV resistance genes. CMV was detected in uninoculated leaves in a small percentage of both BG2814-6 and Perennial plants, indicating that resistance is not absolute in either genotype. Enzyme-linked immunosorbent assay absorbance values of samples taken from inoculated leaves corresponded well with visible viral symptoms for parental genotypes. While Perennial plants accumulated CMV antigen in inoculated leaves, CMV antigen was not detected in inoculated leaves of 73% of BG2814-6 plants, suggesting that there may be a mechanistic difference in resistance between the two genotypes.
JnArticleKeywords
Additional keywords:
cucumovirus,
disease resistance,
pepper,
polygenic resistance
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ArticleCopyright
© 2000 The American Phytopathological Society
