Data/hora: 14/06/2024 15:04:34

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 23/08/2017
Data da última atualização: | 21/05/2019
Autoria: | MICHELOTTO, M. D.; GODOY, I. J. de; PIROTTA, M. Z.; SANTOS, J. F. dos; FINOTO, E. L.; FAVERO, A. P.
Afiliação: | Marcos Doniseti Michelotto, APTA; Ignácio José de Godoy, Agronomic Institute (IAC); Melina Zacarelli Pirotta, FCAV/UNESP; João Francisco dos Santos, Agronomic Institute (IAC); Everton Luiz Finoto, APTA; ALESSANDRA PEREIRA FAVERO, CPPSE.
Título: | Resistance to thrips (Enneothrips flavens) in wild and amphidiploid Arachis species.
Ano de publicação: | 2017
Fonte/Imprenta: | PLOS ONE, v. 12, n. 5, p. 1-12, 2017.
DOI: | https://doi.org/10.1371/journal.pone.0176811
Idioma: | Inglês
Conteúdo: | Thrips (Enneothrips flavens) is a pest that causes severe damage and yield losses to peanut crop if not properly controlled. The main control method currently used by farmers is biweekly application of insecticides during crop development, which, in addition to its toxicity, is very costly. Thus, new sources of resistance must be identified in order to reduce the use of insecticides and effectively manage the pest. This study aimed to evaluate the occurrence and symptoms of E. flavens infestations in 12 accessions of 10 wild species of Arachis and nine amphidiploids, as well as to compare their morphoagronomic characteristics to those of commercial cultivars. To this end, we conducted experiments during two summer seasons, using a randomized block design with four replications. We conducted evaluations of the severity of infestation, noting visual symptoms of E. flavens and morphological and reproductive characteristics of the Arachis plants. Results indicated that wild accessions V 7635 (A. vallsii), V 13250 (A. kempff-mercadoi), K 9484 (A. batizocoi), Wi 1118 (A. williamsii), V 14167 (A. duranensis) and V 13751 (A. magna) are the most promising for obtaining useful new amphidiploids. Among the amphidiploids, An 12 (A. batizocoi x A. kempff-mercadoi) 4x, An 9 (A. gregoryi x A. stenosperma) 4x, and An 8 (A. magna x A. cardenasii) 4x showed high level of resistance to E. flavens. The identified thrips resistant wild and amphidiploid Arachis species may be used in future breeding program to produce thrips resistant peanut cultivars.
Palavras-Chave: | Arachis species; Peanut crop.
Thesagro: | Enneothrips Flavens.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/162944/1/journal.pone.0176811.pdf
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (24083-1) - UPC - AP - DD - PROCI-2017.00025 - MIC - 2017.00151 - DIS