Data/hora: 23/09/2024 18:38:38

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	16/11/2018	
Data da última atualização: 	16/11/2018	
Autoria: 	RIBOLDI, L. B.; ARAÚJO, S. H. da C.; FREITAS, S. T. de; CASTRO, P. R. de C. e.	
Afiliação: 	LUCAS BAIOCHI RIBOLDI; SABRINA HELENA DA CRUZ ARAÚJO; SERGIO TONETTO DE FREITAS, CPATSA; PAULO ROBERTO DE CAMARGO E CASTRO.	
Título: 	Incidence of blossom-end rot in elongated tomato fruit.	
Ano de publicação: 	2018	
Fonte/Imprenta: 	Botany, v. 96, n. 10, p. 663-673, 2018.	
DOI: 	10.1139/cjb-2018-0021	
Idioma: 	Inglês	
Conteúdo: 	Blossom-end rot (BER) is a physiological disorder that can affect 100% of the fruit crop depending on the genotype. Tomato varieties with elongated fruit usually have a greater susceptibility to BER than other varieties. To evaluate and identify the possible physiological and morphological characteristics related to the onset of BER development, four varieties of long-shape tomato fruit with different susceptibility to BER: ?San Marzano,? ?Banana Legs,? ?Roma,? and ?Mini-Roma? were examined. Our results show that ?San Marzano? and ?Banana Legs? (elongated fruit) had a higher incidence of BER and lower Ca2+ concentration in the distal fruit tissue. ?San Marzano? (the most elongated fruit) presented higher electrolyte leakage in the distal fruit tissue. By comparison, ?Roma? and ?Mini-Roma? (less elongated fruit) were less susceptible to BER and had a higher ratio for proximal/distal fruit Ca2+ and a lower distal cell-wall bound content of Ca2+. Additionally, xylem functionality (vessels transporting water and solutes) in the distal fruit tissue was also higher in these more-tolerant varieties. These results support the theory that total fruit content of Ca2+ is not the only factor determining fruit susceptibility to BER, but rather a balance between physiological and morphological factors that influence Ca2+ transport and allocation in the fruit.	
Palavras-Chave: 	Blossom-end rot; Podridão floral.	
Thesagro: 	Doença; Fisiologia Vegetal; Tomate.	
Thesaurus Nal: 	Tomatoes.	
Categoria do assunto: 	H Saúde e Patologia	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (57740-1) - UPC - AP - DD -  -  -  - DIS