Article | . 2014 Vol. 32, Issue. 1
Resistance of Chili Pepper Cultivars to Isolates of Phytophthora capsici


2014.. 66:76


Resistance of one hundred commercialized cultivars of chili pepper to four isolates of Phytophthora capsici was evaluated under controlled environmental conditions. The cultivars are commercialized as resistant (59%) and susceptible (41%) to Phytophthora blight in Korea. Mean disease severities of the cultivars on P. capsici MY-1, KPC-1, JHAI1-7, and KPC-7 isolates were 37, 55, 60, and 74%, respectively. In addition, 38 for MY-1, 48 for KPC-1, 56 for JHAI1-7, and 76 cultivars for KPC-7 showed susceptibility. To P. capsici MY-1, the weakest pathogenicity isolate among them, 59 cultivars represented high resistance. By contrast, only six cultivars showed high resistance to P. capsici KPC-7, the strongest isolate. Furthermore, resistance of most cultivars except for three cultivars was negatively correlated with the virulence of P. capsici isolates. And isolate-specific resistance of the chili pepper cultivars could not be found. Among them, six cultivars showing resistance to all the tested isolates were selected for further study. The development of Phytophthora blight on the six cultivars according to inoculum density (5 × 104 to 1.5 × 106 sporangia/pot) and incubation temperature (25 to 30°C) after inoculation of P. capsici was tested. Resistance of the cultivars to P. capsici KPC-1 and JHAI1-7, moderately pathogenic isolates, was hardly affected. But to KPC-7 isolate, the highly resistant cultivars showed susceptiblility or moderate resistance when the seedlings were inoculated with inoculum density of 1.5 × 106 sporangia/pot and incubated at 28 to 30°C. From these results, it is likely that resistance of chili pepper cultivars to Phytophthora blight is affected by the virulence of P. capsici isolate.

1. Ares, J.L., A.R. Martinez, and J.F. Paz. 2005. Resistance of pepper germplasm to isolates collected in northwest Spain. Span. J. Agric. Res. 3:429-436.  

2. Barksdale, T.H., G.C. Papavizas, and S.A. Johnston. 1984. Resistance to foliar blight and crown rot of pepper caused by . Plant Dis. 68:506-509.  

3. Bosland, P.W. 1993. An effective plant field cage to increase the production of genetically pure chilli (.) seed. HortScience 29:1182-1183.  

4. Bosland, P.W. and D.L. Lindsey. 1991. A seedling screen for Phytophthora root rot of pepper, . Plant Dis. 75:1048-1050.  

5. Bowers, J.H. and D.J. Mitchell. 1991. Relationship between inoculum level of and mortality of pepper. Phytopathology 81:178-184.  

6. Erwin, D.C. and O.K. Ribeiro. 1996. Phytophthora diseases worldwide. American Phytopathological Society, St. Paul, MN.  

7. Foster, J.M. and M.K. Hausbeck. 2010. Resistance of pepper to Phytophthora crown, root, and fruit rot is affected by isolate virulence. Plant Dis. 94:24-30.  

8. Gil Ortega, R.G., C. Palazon- Espanol, and J. Cuartero-Zueco. 1991. Genetics of resistance to in the pepper line ‘SCM-334’. Plant Breed. 107:50-55.  

9. Glosier, B.R., E.A. Ogundiwin, G.S. Sidhu, D.R. Sischo, and J.P. Prince. 2008. A differential series of pepper () lines delineates fourteen physiological races of . Euphytica 162:23-30.  

10. Hwang, B.K. 2002. Studies of resistance of pepper to Phytophthora blight and its control. Res. Plant Dis. 8:131-145.  

11. Hwang, B.K., A.W.A.M. de Cock, G. Bahnweg, H.H. Prell, and R. Heitefuss. 1991. Restriction fragment length polymorphisms of mitochondrial DNA among isolates from pepper (). Systematic Appl. Microbiol. 14:111-116.  

12. Kim, B.-S., T.-R. Kwon, J.-E. Hwang, J.-M. Lee, D.-G. Park, J.-H. Ahn, and H.Y. Kim. 2010. Resistance to Phytophthora blight of commercial pepper cultivars in Korea. Res. Plant Dis. 16:141-147.  

13. Kim, Y.J., B.K. Hwang, and K.W. Park. 1989. Expression of age- related resistance in pepper plants infected with . Plant Dis. 73:745-747.  

14. Kimble, K.A. and R.G. Grogan. 1960. Resistance to Phytophthora root rot in pepper. Plant Dis. Rep. 44:872-873.  

15. Lee, S.J. and B.S. Kim. 2012. Evaluation of pepper genetic sources (.) for disease resistance breeding. Kor. J. Hort. Sci. Technol. 30:185-191.  

16. Lee, S.J., Y.J. Park, H.T. Kim, and B.S. Kim. 2010. The race differentiation of in Korea. Res. Plant Dis. 16:153-157.  

17. Lefebvre, V. and A. Palloix. 1996. Both epistatic and additive effects of QTLs are involved in polygenic induced resistance to disease: A case study, the interaction pepper- Leonian. Theor. Appl. Genet. 93:503-511.  

18. Lefebvre, V., S. Pflieger, A. Thabuis, C. Caranta, A. Blattes, J.C. Chauvert, A.M. Daubeze, and A. Palloix. 2002. Towards the saturation the pepper linkage map by alignment of three intraspecific maps including known-function genes. Genome 45:839-845.  

19. Oelke, L.M., P.W. Bosland, and R. Steiner. 2003. Differentiation of race specific resistance to Phytophthora root rot and foliar blight in . J. Am. Soc. Hortic. Sci. 128: 213-218.  

20. Park, H.G., O.H. Kwon, H.T. Kim, J.H. Na, Y. Park, J.Y. Park, C.S. Park, K.H. Song, D.H. Yang, Y.H. Om, I.W. Yoo, J.-Y. Yoon, B.S. Lee, S.S. Lee, H.D. Suh, S.Y. Jeong, D.-G. Oh, J.W. Cheong, Y.H. Cho, Y.-S. Cho, and Y.C. Cho. 2008. The recent history of vegetable seed industry in Korea. Seoul National University Press, Seoul.  

21. Pflieger, S., A. Palloix, C. Caranta, A. Blattes and V. Lefebvre. 2001. Defense response genes co-localize with quantitative disease resistance loci in pepper. Theor. Appl. Genet. 103:920- 929.  

22. Polach, F.J. and R.K. Webster. 1972. Identification of strains and inheritance of pathogenicity in . Phyto-pathology 62:20-26.  

23. Smith, P.G., K.A. Kimble, R.G. Grogan, and A.H. Millett. 1967. Inheritance of resistance in peppers to Phytophthora root rot. Phytopathology 57:377-379.  

24. Sy, O., R. Steiner, and P.W. Bosland. 2008. Recombinant inbred line differential identifies race-specific resistance to Phytophthora root rot in . Phytopathology 98:867-870.  

25. Tamietti, G. and D. Valentino. 2001. Physiological characterization of a population of Leon. from northern Italy. J. Plant Pathol. 83:199-205.  

26. Thabuis, A., V. Lefebvre, G. Bernard, A.M. Daubeze, T. Phaly, E. Pochard, and A. Palloix. 2004. Phenotypic and molecular evaluation of a recurrent selection program for a polygenic resistance to in pepper. Theor. Appl. Genet. 109:342-351.  

27. Thabuis, A., A. Palloix, S. Pflieger, A.M. Daubeze, C. Caranta, and V. Lefebvre. 2003. Comparative mapping of Phytophthora resistance loci in pepper germplasm: Evidence for conserved resistance loci across Solanaceae and for a large genetic diversity. Theor. Appl. Genet. 106:1473-1485.  

28. The Korean Society of Plant Pathology (KSPP). 2009. Vegetables, p. 99-103. In: W.-G. Kim and H.M. Koo (eds.). List of plant disease in Korea. 5th ed. KSPP, Suwon, Korea.  

29. Yang, S.S., N.K. Sung, D.I. Choi, and C.H. Kim. 1989. Pathogenic variation of Leonian on red-pepper in Korea. Korean J. Plant Pathol. 5:370-376.