Characterization of sources of resistance to bacterial spot in Capsicum peppers

Si Eun Byeon, Alebel Mekuriaw Abebe, Yoon Hyuk Jegal, Khin Pa Pa Wai, Muhammad Irfan Siddique, Hwang Sung Mo, Hee Ju Yoo, Kil Su Jang, Ji Eun Hwang, Su Gyeong Jeon, Su Heon Lee, Byung Soo Kim

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A total of 33 accessions of pepper (Capsicum spp.), including previously reported and newly discovered sources of resistance to bacterial spot caused by Xanthomonas euvesicatoria, were evaluated for their resistance to bacterial spot. The selected accessions were then grown and their horticultural characteristics were recorded. In a test for hypersensitive resistance (HR) to four races (P1, P3, P7, P8) of the pathogen found in Korea, KC00939 and Chilbok No.2, which carry the Bs2 gene, exhibited a hypersensitive response to all four races, as expected. Chilbok No.3, which carries the Bs3 gene, showed a hypersensitive reaction to race 1 and 7, as expected. KC00939 exhibited a high ASTA color value and tolerance to multiple infections from a viral complex of Cucumber mosaic virus (CMV) and Broad bean wilt virus (BBWV). Thus, this accession represents a promising genetic resource for breeding cultivars with multiple disease resistance and strong red coloration. KC01327, KC01617, KC01015, KC01760, KC01779, KC01137, KC01328, KC01006, KC00127, KC01704, and KC00995 did not exhibit hypersensitivity but showed a high level of general resistance when evaluated by spray inoculation. KC01617, KC01760, KC01779, KC01137, KC01704, and KC01777 are newly identified sources of resistance to bacterial spot. The previously and newly identified sources of resistance to bacterial spot evaluated in this study, including information about their resistance to CMV and BBWV complex in the field, the contents of pungent and sweet taste components, and the color values of dry fruits, will be useful for breeding pepper cultivars with resistance to bacterial spot.

Original languageEnglish
Pages (from-to)779-789
Number of pages11
JournalHorticultural Science and Technology
Volume34
Issue number5
DOIs
StatePublished - Oct 2016

Keywords

  • Capsicum spp.
  • General resistance
  • Hypersensitive resistance
  • Race
  • Xanthomonas euvesicatoria

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