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      Resistance of Sugarcane Cultivars to Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae).

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          Abstract

          The spittlebug Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae) is one of the most important pests of the sugarcane crop in Brazil. Despite of its importance, there is currently a lack of information regarding sugarcane cultivars' resistance to the spittlebug. Therefore, our objective was to evaluate the response of sugarcane genotypes to this species. Two experiments were carried out under laboratory conditions using a random block design with treatments in a factorial arrangement of 2 × 13 (experiment 1) and 2 × 12 (experiment 2), with six replicates. The first factor included two levels of infestation (infested and noninfested plants with spittlebugs), while the second consisted of the cultivars. Nymph survival varied from 47.9 to 84.5%, indicating that there are different levels of antibiosis to M. fimbriolata among the tested cultivars. The highest degree of antibiosis was found in cultivars IACSP96-7586 and IACSP96-2008, in which nymph survival was close to 48%. IACSP96-7586 also presented some degree of tolerance, but IACSP96-7569 and IACSP97-6682 stood out as the most tolerant cultivars to the pest, showing the lowest reduction in weight of aboveground biomass. On average, spittlebug infestations caused a significant reduction in relative leaf chlorophyll content and aboveground biomass weight.

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          Author and article information

          Journal
          Neotrop. Entomol.
          Neotropical entomology
          Springer Nature America, Inc
          1678-8052
          1519-566X
          Feb 2014
          : 43
          : 1
          Affiliations
          [1 ] Instituto Agronômico, Centro de Cana-de-açúcar, Rodovia SP 333, km 321, 14001-970, Ribeirão Preto, SP, Brasil. leiladinardo@iac.sp.gov.br.
          [2 ] Instituto Agronômico, Centro de Cana-de-açúcar, Rodovia SP 333, km 321, 14001-970, Ribeirão Preto, SP, Brasil.
          [3 ] Fac de Ciências Agrárias e Veterinárias, Depto de Ciências Exatas, UNESP, Jaboticabal, SP, Brasil.
          [4 ] Fac Ciências Agrárias e Veterinárias, Depto de Defesa Fitossanitária, UNESP, Jaboticabal, SP, Brasil.
          Article
          10.1007/s13744-013-0182-9
          10.1007/s13744-013-0182-9
          27193410
          e548cdc2-9e81-4d7b-89b8-51788697d86d
          History

          Saccharum,tolerance,spittlebug,plant resistance,Antibiosis
          Saccharum, tolerance, spittlebug, plant resistance, Antibiosis

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