Screening of pepper accessions for resistance against two thrips species (<Emphasis Type="Italic">Frankliniella occidentalis</Emphasis> and <Emphasis Type="Italic">Thrips parvispinus</Emphasis>) |
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| Authors: | Awang Maharijaya Ben Vosman Greet Steenhuis-Broers Asep Harpenas Agus Purwito Richard G F Visser Roeland E Voorrips |
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| Institution: | (1) Wageningen UR Plant Breeding, Wageningen University and Research Center, P.O. Box 16, 6700 Wageningen, The Netherlands;(2) Bogor Agricultural University, Jalan Raya Darmaga, 16680 Bogor, Indonesia;(3) East–West Seeds, P.O. Box 1, 41181 Campaka, Purwakarta, Indonesia; |
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| Abstract: | Thrips are damaging pests in pepper worldwide. They can cause damage directly by feeding on leaves, fruits or flowers, and
also indirectly by transferring viruses, especially tomato spotted wilt virus (TSWV). Although thrips are among the most damaging
pests in pepper, until now there is no commercial variety with a useful level of resistance to thrips. This is at least partly
due to the lack of knowledge on resistance levels in pepper germplasm of QTLs and/or genes for resistance, and of information
about resistance mechanisms to thrips in pepper. This paper describes our research aimed at developing practical and reliable
screening methods for thrips resistance in pepper and at identifying pepper accessions showing a strong resistance to thrips.
Thirty-two pepper accessions from four species of pepper (Capsicum annuum, C. baccatum, C. chinense and C. frutescens) and two species of thrips (Frankliniella occidentalis and Thrips parvispinus) were used in this study. Our results indicate that the laboratory based leaf disc test and the detached leaf test can be
used as reliable screening methods for thrips resistance in pepper. We observed a large variation for resistance to thrips
in Capsicum that can be exploited in breeding programs. |
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