Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 4/5/2002
Publication Date: 6/25/2002
Citation: THIES, J.A., FERY, R.L., MUELLER, J.D., MILLER, G., VARN, J. FIELD EFFICACY OF ROOT-KNOT NEMATODE RESISTANCE IN 'CHARLESTON BELLE' AND 'CAROLINA WONDER' BELL PEPPER. PHYTOPATHOLOGY. 2002. v.92.p.S80
Technical Abstract: Two pairs of near-isogenic bell pepper (Capsicum annuum L.) cultivars that differ for resistance to root-knot nematodes (RKN) conferred by the N gene were evaluated on black plastic mulch (Blackville, S.C.) and on bare-soil beds (Charleston, S.C.). The isogenic pepper sets were Charleston Belle (CB - NN) and Keystone Resistant Giant (KRG - nn), and Carolina Wonder (CW - NN) and Yolo Wonder (YW - nn). CB and CW were highly resistant; root gall indices (GI) = 1.1 for both cultivars. KRG and YW were highly susceptible; GI = 4.7 and 4.6, respectively. CB had 96.3% fewer eggs per g fresh root than KRG and CW had 96.9% fewer than YW. The resistant CB had greater marketable fruit yield than the other cultivars, but there were no differences at Charleston. RKN-resistance conferred by the N gene is effective in bell pepper grown on black plastic mulch and on bare-soil beds. RKN-resistant bell peppers should provide economical and environmentally compatible alternatives to methyl bromide and other nematicides for managing RKN.