February
1997
, Volume
81
, Number
2
Pages
185
-
188
Authors
Moshe
Lapidot
,
Department of Virology
,
Ilan
Paran
,
Department of Plant Genetics
, and
Rachel
Ben-Joseph
,
Department of Virology, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
;
Serge
Ben-Harush
,
Hazera Seed Company Kiryat Gat, Israel
; and
Meir
Pilowsky
,
Department of Plant Genetics
,
Shlomo
Cohen
,
Department of Virology
, and
Chen
Shifriss
,
Department of Plant Genetics, Agricultural Research Organization, The Volcani Center
Affiliations
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Accepted for publication 8 November 1996.
Abstract
ABSTRACT
Tolerance to cucumber mosaic virus (CMV) was introduced from an Indian small-fruited hot pepper accession, Perennial, into several bell-type sweet pepper lines by means of pedigree and backcrossing breeding procedures. Tolerance was determined to be incompletely dominant and quantitatively inherited. Breeding lines with variable degrees of tolerance were developed based on inspection of visual symptoms after mechanical inoculation. The breeding lines were subsequently tested for their agronomic performance in the field after mechanical inoculation. Their levels of tolerance in the field closely resembled their previous performances in the greenhouse. There was no association between virus accumulation levels in the upper leaves, as determined by enzyme-linked immunosorbent assay (ELISA), and the degree of tolerance to the virus, as determined by either visual symptoms or field performance. We concluded that the basis for developing tolerant breeding lines from Perennial is primarily their ability to recover from high virus titer and not their restriction of virus multiplication.
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© 1997 The American Phytopathological Society