Journal of Crop Science and Biotechnology

The Korean Society of Crop Science (한국작물학회)
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Resistance to Anthracnose Caused by Colletotrichum acutatum in Chili Pepper(Capsicum annuum L.)

  • Kim, Sang-Hoon (Pepper and Breeding Institute, Business Incubator, College of Agriculture and Life Sciences, Seoul National University) ;
  • Yoon, Jae-Bok (Pepper and Breeding Institute, Business Incubator, College of Agriculture and Life Sciences, Seoul National University) ;
  • Do, Jae-Wahng (Pepper and Breeding Institute, Business Incubator, College of Agriculture and Life Sciences, Seoul National University) ;
  • Park, Hyo-Guen (Pepper and Breeding Institute, Business Incubator, College of Agriculture and Life Sciences, Seoul National University)
  • Published : 2007.12.31
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Abstract

Pepper fruit anthracnose, caused by Colletotrichum acutatum, results in serious yield loss and affects crop quality in many Asian countries, making it a disease of economic consequence. A source resistant to C. acutatum was identified by the AVRDC within the line Capsicum chinense Jacq. PBC932. The resistant breeding line C. annuum AR is the $BC_3F_6$ generation derived from C. chinense Jacq. PBC932. The inheritance of resistance to C. acutatum was analyzed in segregating populations derived from the two crosses HN 11$\times$AR and Daepoong-cho$\times$AR. Detached mature green fruits were inoculated using microinjection method. The disease response was evaluated as the disease incidence at 7 DAI. The segregation ratios of resistance and susceptibility to C. acutatum in the $F_2$ and $BC_R$ populations derived from the two crosses fit significantly to a 1:3 Mendelian model. This indicates that the resistance of AR to C. acutatum is controlled by a single recessive gene.

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