Genetic analysis and identification of QTLs for resistance to cucumber mosaic virus in chili pepper (Capsicum annuum L.)
Euphytica, ISSN: 0014-2336, Vol: 193, Issue: 2, Page: 135-145
2013
- 37Citations
- 30Captures
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Review Description
A pepper (Capsicum annuum) inbred line 'BJ0747-1-3-1-1' was found to exhibit resistance to a cucumber mosaic virus (CMV) local isolate (CMV-HB). In order to exploit the genetic mechanism of CMV resistance in this pepper line, inheritance and genetic linkages of CMV resistance were studied. The CMV-resistant 'BJ0747-1-3-1-1' (P) was crossed to the susceptible line 'XJ0630-2-1-2-1-1' (P), and the F and back-cross populations (B and B) were generated for segregation analysis following a mixed inheritance model. Analysis of the segregation data revealed that CMV resistance in 'BJ0747-1-3-1-1' is controlled by two partially additive-dominant major genes and additive-dominant polygenes. Analysis of the results from two growth seasons also identified two stable and major QTLs for CMV resistance that collectively explained 55 % of the trait variation. One of the two major QTLs was found on linkage group 8 (LG8) between markers TS52 and HpmsE1-43, and accounted for 37.7-43.5 % of the variation in the two inoculation experiments. The other QTL on LG4 between markers UBC843 and S74 was found to be responsible for 10.7-11.2 % of the trait variation. QTLs with minor effects on CMV resistance were also identified. This work provides an example for genetic analysis and QTL mapping of other disease-resistance genes in pepper and the findings should be useful for molecular marker-assisted breeding programs that aim at developing disease-resistant cultivars in peppers. © 2013 Springer Science+Business Media Dordrecht.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84882835585&origin=inward; http://dx.doi.org/10.1007/s10681-013-0953-8; https://link.springer.com/10.1007/s10681-013-0953-8; http://link.springer.com/content/pdf/10.1007/s10681-013-0953-8; https://link.springer.com/content/pdf/10.1007/s10681-013-0953-8.pdf; https://link.springer.com/article/10.1007/s10681-013-0953-8/fulltext.html; https://dx.doi.org/10.1007/s10681-013-0953-8; https://link.springer.com/article/10.1007/s10681-013-0953-8
Springer Science and Business Media LLC
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