Genetic parameters and selection for resistance to bacterial spot in recombinant F6 lines of Capsicum annuum

This study aimed to advance generations and select superior sweet pepper genotypes with resistance tobacterial spot, using the breeding method Single Seed Descent (SSD) based on the segregating population derived from thecross between Capsicum annuum L. UENF 1421 (susceptible, non-pungent) and UENF...

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Bibliographic Details
Published in:Crop breeding and applied biotechnology 2009-01, Vol.9 (2), p.108-115
Main Authors: Riva-Souza, E.M., Rodrigues, R., Sudré, C.P., Pereira, M.G., Bento, C.S., Matta, F.P.
Format: Article
Language:English
Subjects:
AUDPC
Bacteria
capsaicin
Capsicum annuum
genetic disease resistance
Peppers
single seed descent
Spot
sweet pepper
Xanthomonas campestris pv. vesicatoria
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Summary:This study aimed to advance generations and select superior sweet pepper genotypes with resistance tobacterial spot, using the breeding method Single Seed Descent (SSD) based on the segregating population derived from thecross between Capsicum annuum L. UENF 1421 (susceptible, non-pungent) and UENF 1381 (resistant, pungent). Thesegregating F3 generation was grown in pots in a greenhouse until the F5 generation. The F6 generation was grown in fieldconditions. The reaction to bacterial spot was evaluated by inoculation with isolate ENA 4135 of Xanthomonas campestris pv.vesicatoria, based on a score scale and by calculating the area under the disease progress curve (AUDPC). The presence orabsence of capsaicin was also assessed. Eighteen F6 lines were bacterial leaf spot-resistant. Since no capsaicin was detectedin the F6 lines 032, 316, 399, 434, and 517, these will be used in the next steps of the sweet pepper breeding program.
ISSN:1984-7033
1518-7853
1984-7033
DOI:10.12702/1984-7033.v09n02a02