Data/hora: 16/06/2024 10:15:52

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	12/02/2021	
Data da última atualização: 	12/02/2021	
Autoria: 	VELEZ, L. S.; SILVA, A. M. F.; SANTOS, C. A. F.; ASSUNÇÃO E. F.; SILVA, M. S.; SOUZA, E. B.; GAMA, M. A. S.	
Afiliação: 	Leandro S. Velez; Adriano Márcio F. Silva; CARLOS ANTONIO FERNANDES SANTOS, CPATSA; Emanuel F. Assunção; Matheus S. Silva; Elineide B. Souza; Marco Aurélio S. Gama.	
Título: 	Evaluation of onion genotypes to slippery skin caused by Burkholderia gladioli pv. alliicola.	
Ano de publicação: 	2020	
Fonte/Imprenta: 	Horticultura Brasileira, v. 38, p. 350-355, 2020.	
DOI: 	http://dx.doi.org/10.1590/s0102-053620200402	
Idioma: 	Inglês	
Conteúdo: 	Onion?s (Allium cepa) slippery skin caused by Burkholderia gladioli pv. alliicola is one of the bacterial diseases that stand out in producing regions of the Brazilian Northeast. Given the importance and potential threat of this disease, and the absence of resistant varieties, the aim of this study was to evaluate the reaction of onion genotypes to slippery skin and to analyze the tolerance stability of the most promising genotypes to different strains of the bacteria. Nine strains of B. gladioli pv. alliicola were artificially inoculated in onion bulbs cv. Baia Periforme and the three most aggressive strains (CCRMBG39, CCRMBG172 and CCRMBG212) were selected to evaluate the tolerance to the disease. Fifty-eight onion genotypes were challenged with the most aggressive strain (CCRMBG39) and 34 genotypes were considered as tolerant, with a disease severity varying from 9.79 to 13.42 mm. The fifteen most promising genotypes and the most susceptible genotype were selected to study the stability of tolerance using the three selected strains. The genotypes F2 (EHCEB 20151030 x EHCEB 20133015), Cascuda T5, Crioula Mercosul, Juporanga, EHCEB 20111036, Cascuda T6 and EHCEB 20142028 remained tolerant to the disease when inoculated with the three strains, with a disease severity ranging from 9.13 to 14.19 mm. In view of these results, we conclude that these genotypes can be used as potential sources of tolerance to onion slippery skin.	
Palavras-Chave: 	Burkhoderia gladioli; Capa d'água; Semiárido.	
Thesagro: 	Allium Cepa; Bactéria; Cebola; Doença; Genótipo; Resistência Genética.	
Thesaurus Nal: 	Genetic resistance; Onions.	
Categoria do assunto: 	G Melhoramento Genético	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/221186/1/Evaluation-of-onion-genotypes-to-slippery-2020.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (59402-1) - UPC - AP - DD -  -  -  - DIS