Biotypes of insect pests of agricultural crops

Saxena, R. C.; Barrion, A.A.

doi:10.1017/s1742758400022475

Cited by 35 publications

(36 citation statements)

References 17 publications

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“…For that reason the study of insect biotypes should be included in breeding programs for resistance to insects in crop plants. This can lead to a better understanding of mechanisms of host plant resistance (Saxena & Barrion, 1987). Several methods are used to identify insect biotypes (Smith et al, 1994).…”

Section: Discussionmentioning

confidence: 99%

“…Populations of the same pest species that differ in performance on different plant species or varieties are commonly referred to as biotypes (Claridge & den Hollander, 1983;Diehl & Bush, 1984;Saxena & Barrion, 1987;Menken & Raijmann, 1996). The units that are identified as 'biotypes' may be different clones, groups of clones, different populations, or simply phenotypically similar groups composed of an unknown number of different genotypes (Via, 1989).…”

Section: Introductionmentioning

confidence: 99%

“…For example in a study on resistance to the cabbage aphid Brevicoryne brassicae (L.) of Brussels sprouts it was found that only one out of seven sprout clones that were highly resistant to aphids from one location was also resistant to aphids from several other locations (Dunn & Kempton, 1972). Saxena & Barrion (1987) have listed 36 insect species with known biotypes. Well known examples are the Hessian fly, the brown planthopper, and several aphid species.…”

Section: Introductionmentioning

confidence: 99%

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Variation in performance of western flower thrips populations on susceptible and partially resistant cucumber

Kogel

Hoek

Mollema

1997

Entomologia Exp Applicata

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Variation in performance of western flower thrips populations on susceptible and partially resistant cucumber de Kogel, W.J.; van der Hoek, M.; Mollema, C. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Key words: Frankliniella occidentalis, Cucumis sativus, biotype, host plant resistance, life history, population growth rate AbstractBiotypic variation is of major concern in breeding for host plant resistance to insects. The existence or development of aggressive biotypes can lead to a rapid break-down of host plant resistance. Therefore the study of biotypic variation should be included in breeding programs for resistance to insects. In the present study we measured the reproduction of randomly collected females of ten different populations of the insect herbivore Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) on one susceptible and two resistant cucumber (Cucumis sativus L.) accessions. Significant differences between thrips populations were observed on all three cucumber accessions. None of the populations had a significantly higher reproduction than the Dutch reference population NL1. For three populations, the Dutch population NL1, a population from New Zealand (NZ), and an Italian population (IT), partial life history parameters, such as reproduction rate, developmental time and survival were determined and the relative rate of increase r r was calculated. On all three cucumber accessions the r r -value of population NZ was lower than of populations NL1 and IT. It is concluded that there is biotypic variation in F. occidentalis with regard to performance on cucumber plants with different levels of resistance. Reproduction is a good criterion for differentiating biotypes of F. occidentalis on cucumber.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Variation in performance of western flower thrips populations on susceptible and partially resistant cucumber

Kogel

Hoek

Mollema

1997

Entomologia Exp Applicata

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“…Isso deveria ser feito em razão do marcante efeito do ambiente na resistência da planta, como mostrou CHALFANT (1985), ao relatar que cultivares resistentes ao A. craccivora na África não tinham o mesmo comportamento na Geórgia, Estados Unidos (SANTOS & QUINDERÉ, 1988 (MESSINA et al, 1985). Essas discrepâncias podem estar ligadas à existência de biotipos de pulgão-preto, pois, segundo SAXENA & BARRION (1987), só na Nigéria são encontrados cinco biotipos.…”

Section: Introductionunclassified

Preferência do pulgão-preto, Aphis craccivora Koch, a diferentes genótipos de feijão-de-corda, Vigna unguiculata (L.) Walp

Moraes

Bleicher

2007

Cienc. Rural

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Este trabalho foi desenvolvido visando a avaliar a resposta de cultivares de feijão-de-corda, Vigna unguiculata (L.) Walp., à presença do pulgão-preto (Aphis craccivora Koch). Os experimentos foram conduzidos de agosto a outubro de 2004, em casa-de-vegetação da Universidade Federal do Ceará (UFC). As cultivares foram: "Epace-10", "Epace-11", "Patativa", "Pingo de Ouro", "Pitiúba", "BR-10 Piauí", "BR-12 Canindé", "BR-14 Mulato" e "BR-17 Gurguéia". O experimento constou de três ensaios, cada um com cinco tratamentos e seis repetições, sendo o delineamento estatístico inteiramente casualizado. Os genótipos foram cultivados em copos plásticos de 300ml e mantidos em gaiolas protegidas por tela antiafídeos. As plantas foram infestadas após doze dias do plantio através da liberação de cinco fêmeas adultas do pulgão-preto por planta. As avaliações foram realizadas após o terceiro e o quinto dia da infestação, constando da contagem direta das formas adulta e jovem do inseto presentes nas plantas. Os dados obtidos foram analisados através de análise de variância e pelo teste de Tukey em 5% de probabilidade de erro. As cultivares "Epace-10" e "Patativa" foram as menos preferidas por A. craccivora.

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“…Approximately 50% of the recognized insect biotypes on agricultural crops are aphids (Saxena and Barrion 1987), and it is reported that cereal aphids, such as greenbug, Schizaphis graminum (Rondani) (Burd and Porter 2006), and the Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Weiland et al 2008), have biotypic diversity. For example, 22 greenbug biotypes were reported previously Porter 2006, Weng et al 2010).…”

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confidence: 99%