Data/hora: 22/06/2024 02:42:29

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