Data/hora: 22/06/2024 22:30:44

Biblioteca(s): | Embrapa Gado de Corte; Embrapa Pecuária Sudeste.
Data corrente: | 13/10/2016
Data da última atualização: | 21/02/2018
Autoria: | GUSMAO, M. R.; VALERIO, J. R.; MATTA, F. de P.; SOUZA, F. H. D. de; VIGNA, B. B. Z.; FAVERO, A. P.; BARIONI JUNIOR, W.; INÁCIO, G. R.
Afiliação: | MARCOS RAFAEL GUSMAO, CPPSE; JOSE RAUL VALERIO, CNPGC; FREDERICO DE PINA MATTA, CPPSE; FRANCISCO HUMBERTO DUBBERN DE SOUZA, CPPSE; BIANCA BACCILI ZANOTTO VIGNA, CPPSE; ALESSANDRA PEREIRA FAVERO, CPPSE; WALDOMIRO BARIONI JUNIOR, CPPSE.
Título: | Warm-Season (C4) Turfgrass Genotypes Resistant to Spittlebugs (Hemiptera: Cercopidae).
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Economic Entomology, v. 109, n. 4, p. 1914–1921, August 2016
Idioma: | Inglês
Conteúdo: | Screening for resistance to insect pests is one of the early stages of grass breeding programs. Pasture spittlebugs are sap-sucking insects that potentially cause severe damage to turfgrasses, including the loss of functional quality and perenniallity. The Brazilian flora has a large number of grass species with wide morphological variability and adaptability to different soil and climate conditions that can potentially be used as lawns. However, no study has screened turfgrass genotypes for resistance to spittlebug attack. In this study, we evaluated the intra- and interspecific variability of 35 turfgrass genotypes in the genera Paspalum, Axonopus, and Zoysia for resistance to the pasture spittlebugs, Deois flavopicta (Stal) and Notozulia entreriana (Berg) (Hemiptera: Cercopidae), as measured by damage scores, densities of nymphs and adults, and level of antibiosis resistance. Genotypes were grouped into three groups using cluster analysis and principal component analysis: GroupI had genotypes associated with low damage scores and high density of adult spittlebugs; GroupII had genotypes with intermediate damage scores and low density of nymphs and adults; and GroupIII was formed by genotypes with high damage scores and high nymph density. Intra- and interspecific genotypic variability was related to antibiosis resistance and morphological variation among genotypes with some indicating nonpreference resistance and others indicating tolerance resistance. Our results indicate that besides antibiosis resistance studies, it is essential to evaluate the morphological variability of grass genotypes when screening for resistance to insects. Further studies are needed to elucidate the intraspecific variability of Paspalum notatum Flu¨ gge´ genotypes for resistance to spittlebug attack.
Palavras-Chave: | Gramado; Insect plant resistance; Lawn; Recurso de germoplasma; Resistência de plantas à insetos.
Thesagro: | Cigarrinha.
Thesaurus Nal: | Cercopidae; Genetic resources; Paspalum.

Categoria do assunto:

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O Insetos e Entomologia

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/172978/1/41-Warm-Season-C4-Turfgrass-Genotypes-Resistant-to-Spittlebugs-Hemiptera-Cercopidae-2016.pdf
Registro original: | Embrapa Gado de Corte (CNPGC)

Exemplares:

CPPSE - (23798-1) - UPC - AP - DD - PROCI-2016.00070 - GUS - 2016.00113 - DIS
CNPGC - (17060-1) - UPC - AP - DD -  -  -  - DIS