Effect of host plant resistance in some cowpea (Vigna unguiculata {L.} Walp.) cultivars on growth and developmental parameters of the flower bud thrips, Megalurothrips sjostedti (Trybom)

Alabi, O.Y.; Odebiyi, J. A.; Tamò, Manuele

doi:10.1016/s0261-2194(03)00171-6

Cited by 10 publications

(13 citation statements)

References 12 publications

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“…This was perhaps to be expected, as the level of resistance was assessed based on leaf injury (Maharijaya et al., ) and not on the duration of the developmental stages. Also in other studies, no effect of resistance on the duration of developmental stages of thrips was observed (Trichillo & Leigh, ; Soria & Mollema, ; Alabi et al., ; Maris et al., ). Obviously, a longer developmental period would further delay thrips population development from reaching the threshold level for economic damage.…”

Section: Discussionmentioning

confidence: 79%

Resistance factors in pepper inhibit larval development of thrips (Frankliniella occidentalis)

Maharijaya

Vosman

Verstappen

et al. 2012

Entomologia Exp Applicata

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The western flower thrips [Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)] is a major pest in pepper cultivation. Therefore, host plant resistance to thrips is a desirable trait. The objectives of this study were to determine the effect of resistance on the development of thrips and to identify metabolite compounds related to the resistance. Three highly resistant, three medium resistant, and three susceptible pepper accessions were used in this study. Adult and pre‐adult survival, developmental time, and oviposition rate were assessed. Gas chromatography‐mass spectrometry was used to identify compounds that correlate with the level of resistance to thrips. Our results show that resistance of pepper accessions has a significant effect on oviposition rate and larval mortality. Seven compounds were identified that correlate with resistance to thrips and six compounds were identified that correlate with susceptibility to thrips. Some of these compounds, such as tocopherols, were previously shown to have an effect on insects in general. Also, some specific secondary metabolites (alkanes) seem to be more abundant in susceptible accessions and were induced by thrips infestation.

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Section: Discussionmentioning

confidence: 79%

Resistance factors in pepper inhibit larval development of thrips (Frankliniella occidentalis)

Maharijaya

Vosman

Verstappen

et al. 2012

Entomologia Exp Applicata

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“…The range of thrips damages scores (1-7) recorded, indicated the possibility of obtaining sources of thrips resistance among the evaluated genotypes. The lowest damage scores were recorded on the cultivars IT2841*brown, MU20B, WC17, WC29, MU24C, and WC5 (most resistant cultivars); while the highest scores were recorded on WC36 (most susceptible) suggesting some factors conferring the resistance in these cultivars, since resistance to insects can be through their biology, physiology or even their behaviour (Alabi et al, 2004). In fact, cryptic behaviour of some cowpea lines possessing leafy floral structures and growing vigorously could favour gathering of thrips population (Alabi et al, 2003).…”

Section: Discussionmentioning

confidence: 94%

“…The trends in thrips damages over time, per location, showed a lower peak on resistant cultivars than on the susceptible check; suggesting the involvement of antibiosis or non-preference as resistance mechanism to thrips in these varieties. Antibiosis and non-preference have been reported in cowpea resistance to flower thrips by Alabi et al (2004) in Nigeria under laboratory conditions. Further assessment of the biochemical constituents in these resistant and susceptible cowpea cultivars as regards to M. sjostedt, could reveal additional cues of resistance mechanism of cowpea to thrips.…”

Section: Discussionmentioning

confidence: 99%

Stability and extent of resistance of cowpea lines to flower bud thrips in Uganda

Agbahoungba¹,

Karungi²,

Odong³

et al. 2017

Afr. Crop Sci. J.

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“…Our results also showed that a monocrop of French bean favoured the highest population of M. sjostedti compared to when French bean was intercropped with baby corn, Irish potato, or sunflower. Megalurothrips sjostedti also dominated in the field in the two seasons: the thrips species is native to Africa and is widespread indeed (Nabirye et al., 2003; Alabi et al., 2004; Ngakou et al., 2008). In addition, natural enemies such as Orius albidipennis Reuter play an important role in regulating M. sjostedti population (Gitonga et al., 2002).…”

Section: Discussionmentioning

confidence: 99%

“…sjostedti , F. occidentalis , F. schultzei , and Hydatothrips aldolfifriderici (Karny) (Nyasani et al., 2010). Megalurothrips sjostedti is a common and widespread pest in Africa (Karungi et al., 2000; Alabi et al., 2004; Ngakou et al., 2008). Megalurothrips sjostedti and H. aldolfifriderici feed mainly on legumes, particularly beans, cowpeas, and soya bean (Nabirye et al., 2003).…”

Section: Introductionmentioning

confidence: 99%

Effect of intercrops on thrips species composition and population abundance on French beans in Kenya

Nyasani

Meyhöfer

Subramanian

et al. 2012

Entomologia Exp Applicata

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The study aimed at determining thrips species composition and thrips population density on French bean planted as a sole crop and as an intercrop with either sunflower, Irish potato, or baby corn, in various combinations. Field experiments were conducted in two seasons to examine: (1) thrips population development and thrips species composition over time, (2) effect of intercrops on thrips population density and natural enemies, and (3) effect of intercrops on French bean yield. The experiments were conducted at the Kenya Agricultural Research Institute, Embu, Kenya in a randomized complete block design with four replicates. The thrips population on French beans increased with time. It showed a peak at the flowering stage then started declining when the crops were nearing senescence. French beans hosted four thrips species, Megalurothrips sjostedti (Trybom), Frankliniella schultzei (Trybom), Frankliniella occidentalis (Pergande), and Hydatothrips aldolfifriderici (Karny) (all Thysanoptera: Thripidae) in order of decreasing abundance. The main thrips species on Irish potato and sunflower was F. schultzei. Baby corn hosted only Frankliniella williamsi (Hood) and Thrips pusillus (Bagnall). A monocrop of French bean hosted more thrips than a French bean intercrop mix. Thrips natural enemies such as Orius spp. and Ceranisus spp. were recorded in all crop plants but in especially high numbers on French bean and baby corn, respectively. Plots with French bean alone had about 1.4 times higher yields compared to intercropped plots of French bean with sunflower and French bean with baby corn. However, the percentage of pods that could get rejected on the market due to thrips damage was highest on plots with French bean alone (68 and 63%) and lowest on plots with French bean and baby corn (35 and 37%) in the first and second seasons, respectively. This study showed that a complex of thrips is found in the field and its composition varies with crop stage and species. Intercropping French bean with other crops compromises on French bean yield but reduces damage to the French bean pods, thereby enhancing marketable yield.

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Effect of host plant resistance in some cowpea (Vigna unguiculata {L.} Walp.) cultivars on growth and developmental parameters of the flower bud thrips, Megalurothrips sjostedti (Trybom)

Cited by 10 publications

References 12 publications

Resistance factors in pepper inhibit larval development of thrips (Frankliniella occidentalis)

Resistance factors in pepper inhibit larval development of thrips (Frankliniella occidentalis)

Stability and extent of resistance of cowpea lines to flower bud thrips in Uganda

Effect of intercrops on thrips species composition and population abundance on French beans in Kenya

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