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On-farm evaluation of pepper grafting technology for managing soil-borne diseases of sweet peppers during hot-wet season in highland tropics

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Date
2012-08-31
Author
Wu, Deng-Lin
Palada, Manuel C.
Luther, Gregory C.
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Abstract
A major constraint limiting yield and production of sweet pepper (Capsicum annuum) during the hot-wet season in the highland tropics is the high incidence of soil-borne diseases including bacterial wilt-BW (Ralstonia solanacearum) and Phytophthora blight-PB (Phytophthora capsici). High temperature and humidity during the wet season favor development of these soil pathogens. A technology on grafting sweet pepper scion onto chili pepper rootstock with resistance to both diseases and flooding was developed at AVRDC – The World Vegetable Center since 2002. Several chili pepper lines were identified with high resistance to BW and PB. From 2007 to 2008, on-farm trials were conducted in Nantou, Central Taiwan to evaluate disease resistance and subsequent yield of sweet pepper cultivars grafted onto resistant chili pepper rootstocks. In both years, the incidence of PB and BW was significantly (P<0.05) lower in grafted than non-grafted plants. Marketable fruit yields averaged over four sweet pepper cultivars (scions) were significantly (P<0.05) greater in plants grafted onto seven chili rootstock lines compared to non-grafted plants. Outstanding and high yielding sweet pepper cultivars were ‘Andalus’ and ‘Hazera’. Six outstanding chili pepper rootstock lines with low incidence of BW and PB were identified in these trials. This study indicates that grafting technology is effective in reducing soil-borne diseases of sweet pepper which leads to increased yield and production during the hot-wet season in tropical highlands.
Description
Conference paper
URI
https://hdl.handle.net/20.500.12852/2149
Suggested Citation
Wu, D. L. , Palada, M. C. and Luther, G. C. (2012). On-farm evaluation of pepper grafting technology for managing soil-borne diseases of sweet peppers during hot-wet season in highland tropics. In Rosa, E. (Ed.), XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Quality-Chain Management of Fresh Vegetables: From Fork to Farm. International Society for Horticultural Science. https://doi.org/10.17660/ActaHortic.2012.936.13
DOI
10.17660/ActaHortic.2012.936.13
Type
Conference paper
ISSN
0567-7572; 2406-6168
ISBN
978-90-66054-94-3
Subject(s)
Taro leaf blight OCLC - FAST (Faceted Application of Subject Terminology); Bacterial wilt diseases OCLC - FAST (Faceted Application of Subject Terminology); Phytopathogenic microorganisms--Control OCLC - FAST (Faceted Application of Subject Terminology); Grafting OCLC - FAST (Faceted Application of Subject Terminology); Plant diseases OCLC - FAST (Faceted Application of Subject Terminology); Soilborne plant diseases OCLC - FAST (Faceted Application of Subject Terminology); Capsicum annuum OCLC - FAST (Faceted Application of Subject Terminology); Sweet peppers OCLC - FAST (Faceted Application of Subject Terminology); Sweet peppers--Yield; Tropics OCLC - FAST (Faceted Application of Subject Terminology)
Keywords
Phytophthora blight; Bacterial wilt; Disease management; Abiotic/biotic stress; Capsicum annuum AGROVOC
Series
ISHS Acta Horticulturae;936
Collections
  • Conference papers [17]

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