Data/hora: 11/06/2024 07:59:12

Provedor de dados: 	94	
País: 	Brazil	
Título: 	Resistance to Cowpea aphid-borne mosaic virus in in vitro germinated genotypes of Passiflora setacea	
Autores: 	SACOMAN,NAYARA NIELE; VIANA,ALEXANDRE PIO; CARVALHO,VIRGINIA SILVA; SANTOS,EILEEN AZEVEDO; RODRIGUES,ROSANA.	
Data: 	2018-01-01	
Ano: 	2018	
Palavras-chave: 	PTA-ELISA; Fruit hardening virus; Passion fruit; Plant resistance.	
Resumo: 	ABSTRACT  Passion fruit (Passiflora edulis) is a fruit species of great relevance for Brazilian economy. However, it is highly susceptible to the Cowpea aphid-borne mosaic virus (CABMV). The species P.setacea, on the other hand, is resistant to the disease. The present study aimed to identify CABMV-resistant P. setacea genotypes for the introgression of genes into sour passion fruit genetic breeding programs. The seeds of passion fruit genotypes were germinated in vitro in MS culture medium. The seedlings were acclimatized in a growth chamber at the temperature of 27 ± 2ºC, photoperiod of 16:8 hours and 80% of relative humidity. Thirty plants of each genotype were mechanically inoculated with extract prepared from leaves collected from passion fruit plants with symptoms of CABMV for the assessment of resistance to CABMV. The severity of leaf symptoms was evaluated by means of a grading scale of visual signs. After the visual evaluation and identification of the asymptomatic genotypes of P. setacea, the PTA-ELISA test was carried out for 30 selected genotypes. According to the visual evaluation, all P. setacea genotypes were highly resistant to CABMV, while the P. edulis genotypes were highly susceptible. Out of the 30 genotypes selected, only PsRJ 4 was considered susceptible by PTA-ELISA. The other genotypes of P. setacea were considered resistant and present great potential for use in passion fruit genetic breeding programs.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100802	
Editor: 	Sociedade Brasileira de Fruticultura	
Relação: 	10.1590/0100-29452017607	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Fruticultura  v.40 n.1 2018	
Fonte: 	info:eu-repo/semantics/openAccess