A new resistance gene to Pep YMV ( Pepper yellow mosaic virus ) in Capsicum annuum L

• Published in: Plant breeding Vol. 139; no. 1; pp. 65 - 72
• Main Authors: Rezende, Jéssica Figueiredo, Leite, Monik Evelin, Nogueira, Douglas Willian, Nogueira, Danilo Gustavo, Silva, Alex Antonio da, Maluf, Wilson Roberto
• Format: Journal Article
• Language: English
• Published: 01-02-2020
• ISSN: 0179-9541; 1439-0523
• DOI: 10.1111/pbr.12752

Pvr4
locus, commonly associated with a co‐dominant
CAPS
marker, confers monogenic dominant resistance to potyvirus complex in
Capsicum
spp. Aiming to investigate whether the resistance found in resistant genotypes not bearing
Pvr4
marker is due to allelism in the
Pvr4
locus, or due to a new locus of the
pvr
series, segregation analyses of an F
2
population obtained from a cross between two pepper lines “Myr‐29‐10” (P
1
) (resistant to
Pep
YMV
, showing a single band of
444 bp
,
Pvr4/Pvr4
) and “
PIM
‐025” (P
2
) (resistant to
Pep
YMV
, showing a single band of
458 bp, Pvr4
+
/Pvr4
+
) were performed. According to the results, there is strong evidence that the locus controlling
Pep
YMV
resistance in
PIM
‐025 (P
2
) is not
Pvr4
. These results provide evidence that those resistant genotypes, bearing a susceptible band pattern in the
Pvr4
locus (
458 bp, Pvr4
+
/Pvr4
+
), carry a different gene from those described in the literature up to the present time.