Abstract
Ten pepper cultivars (Capsicum annuum L), that is, Doux D’Alger, Sonar, Esterel, Doux, Marconi, Magister, Belconi, Italico II, Lipari, Arabal, and Doux d’Espagne commercially grown in Algeria were inoculated with six isolates of Phytophthora capsici Leon, and susceptibility of pepper was assessed by evaluation of disease severity in different plant organs. The cultivar Italico II was found to be more resistant to P. capsici isolates compared to other cultivars, for example Esterel which was the very susceptible one. In addition, the pepper cultivars differed significantly (P 0.05). However, velocity of disease development varied between resistant pepper cultivars, that is, Italico II and susceptible ones, for example Esterel. In conclusion, data suggest that pepper cultivars differ in their susceptibility to P. capsici isolates. Key words: Susceptibility, Capsicum annuum, Phytophthora capsici, greenhouse conditions.
Highlights
Ten pepper cultivars (Capsicum annuum L), that is, Doux D’Alger, Sonar, Esterel, Doux, Marconi, Magister, Belconi, Italico II, Lipari, Arabal, and Doux d’Espagne commercially grown in Algeria were inoculated with six isolates of Phytophthora capsici Leon, and susceptibility of pepper was assessed by evaluation of disease severity in different plant organs
Data suggest that pepper cultivars differ in their susceptibility to P. capsici isolates
Disease caused by Phytophthora capsici strains, is one of the serious issues for peppers grown in Algeria and in other regions of the world (Silvar et al, 2006)
Summary
Disease caused by Phytophthora capsici strains, is one of the serious issues for peppers grown in Algeria and in other regions of the world (Silvar et al, 2006). It was first identified in the Mesilla Valley of southern New Mexico in 1922 and is considered the causal agent of pepper wilt and infects virtually any under-ground or upper-ground organs of pepper plants (Ristaino and Johnston, 1999; Hausbeck and Lamour, 2004; Tamietti and Valentino, 2001). Chemical control has various environmental and safety limitations and often sometimes is ineffective against Phytophthora strains
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