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Relationship of phenotypic structures and allelochemical compounds of okra (Abelmoschus spp.) to resistance against Aphis gossypii Glover

dc.contributor.authorAbang, A.F.
dc.contributor.authorSrinivasan, R.
dc.contributor.authorKekeunou, S.
dc.contributor.authorYeboah, M.
dc.contributor.authorHanna, R.
dc.contributor.authorLin, M.Y.
dc.contributor.authorTenkouano, A.
dc.contributor.authorBilong-Bilong, C.F.
dc.date.accessioned2019-12-04T11:04:07Z
dc.date.available2019-12-04T11:04:07Z
dc.date.issued2016
dc.identifier.citationAbang, A.F., Srinivasan, R., Kekeunou, S., Yeboah, M., Hanna, R., Lin, M.Y., ... & Bilong Bilong, C.F. (2016). Relationship of phenotypic structures and allelochemical compounds of okra (Abelmoschus spp.) to resistance against Aphis gossypii Glover. International Journal of Pest Management, 62(1), 55-63.
dc.identifier.issn0967-0874
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1343
dc.descriptionPublished online: 29 Oct 2015
dc.description.abstractThe cotton aphid (Aphis gossypii) is one of the major pests of okra. Eleven okra varieties collected from farmers’ fields in Cameroon and four aphid-resistant accessions from The World Vegetable Center (AVRDC, Asian Vegetable Research and Development Center) were evaluated from October 2012 to March 2013, and another seven aphid-resistant accessions from AVRDC were evaluated from March to July 2013 at AVRDC’s Nkolbisson station, Yaound e, Cameroon. Accessions selected from these trials were screened in an advanced confirmatory screening in autumn (October December) 2013 in Shanhua, Taiwan. Results showed that none of the farmers’ landraces were resistant to aphids. Two accessions (VI041210 and VI033824) with the lowest aphid populations had the highest trichome density. Analysis of various phytochemicals in selected okra accessions revealed that higher nitrogen and potassium levels made the okra accessions susceptible to aphids during the reproductive stage of the plants. Similarly, the total phenol content was lower in moderately resistant accessions during their reproductive stage. Aphid feeding induced an increase in phenols, and to a lesser extent, tannins. Accessions VI041210 and VI033824 could be incorporated into an integrated pest management strategy to enhance productivity of okra.
dc.format.extent55-63
dc.language.isoen
dc.subjectResistance
dc.subjectOkra
dc.subjectAphids
dc.subjectAllelochemicals
dc.subjectAbelmoschus
dc.titleRelationship of phenotypic structures and allelochemical compounds of okra (Abelmoschus spp.) to resistance against Aphis gossypii Glover
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpIntegrated Systems for the Humid Tropics
cg.contributor.affiliationWorld Vegetable Center
cg.contributor.affiliationUniversité de Yaoundé
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionCentral Africa
cg.coverage.regionEast Asia
cg.coverage.countryCameroon
cg.coverage.countryTaiwan
cg.researchthemePLANT PRODUCTION & HEALTH
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Health
cg.journalInternational Journal of Pest Management
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid79307
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/09670874.2015.1095372


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