Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/68784
DC FieldValueLanguage
dc.contributor.authorYadav, J.en_US
dc.contributor.authorTan, C.W.en_US
dc.contributor.authorHwang, S.Y.en_US
dc.date2010zh_TW
dc.date.accessioned2014-06-11T05:57:19Z-
dc.date.available2014-06-11T05:57:19Z-
dc.identifier.issn0046-225Xzh_TW
dc.identifier.urihttp://hdl.handle.net/11455/68784-
dc.description.abstractFoliar chemicals are variable within a plant and this may affect herbivore feeding preference. This study was carried out to quantify concentrations of primary (nitrogen, water, and total nonstructural carbohydrates) and secondary substances (sinigrin) in young and old leaves of Raphanus sativus L. and to evaluate performance and survival of a generalist herbivore Spodoptera litura F. feeding on them. Forty to 50-d-old R. sativus plants were used in both foliar chemical analysis and insect performance bioassays. Leaves located on the third to the sixth node from the base of the plant were defined as old leaves and the remaining leaves (from seventh node to the plant apex) of the plant were referred as young leaves in this study. All foliar chemicals except water differed significantly between young and old leaves. Moreover, young leaves were more nutritious but much more defended, based on sinigrin content, against S. litura than old leaves. Performance and survival of S. litura were reduced on young leaves as compared with old leaves. Male and female larval duration only differed significantly on young leaves. Female larval development time was longer than male development time on young leaves, but not on older leaves. Therefore, this study revealed that defenses in young leaves have differential effects upon male and female S. litura.en_US
dc.language.isoen_USzh_TW
dc.relationEnvironmental Entomologyen_US
dc.relation.ispartofseriesEnvironmental Entomology, Volume 39, Issue 6, Page(s) 1990-1996.en_US
dc.relation.urihttp://dx.doi.org/10.1603/en10118en_US
dc.subjectfoliar chemicalsen_US
dc.subjectspatial variationen_US
dc.subjectperformanceen_US
dc.subjectRaphanus sativusen_US
dc.subjectSpodoptera lituraen_US
dc.subjectbrassica-oleraceaen_US
dc.subjectglucosinolate concentrationsen_US
dc.subjectseasonal-variationen_US
dc.subjectnitrogen-contenten_US
dc.subjectleaf chemistryen_US
dc.subjectgeneralisten_US
dc.subjectherbivoryen_US
dc.subjectspecialisten_US
dc.subjectgrowthen_US
dc.subjectageen_US
dc.titleSpatial Variation in Foliar Chemicals Within Radish (Raphanus sativus) Plants and Their Effects on Performance of Spodoptera lituraen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1603/en10118zh_TW
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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