Data/hora: 16/06/2024 04:36:24

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 24/10/2018
Data da última atualização: | 02/12/2019
Autoria: | SALAES, W. da S.; ISHIKAWA, H.; SOUZA, E. M. de C.; NASCIMENTO, J. H. B.; SOUZA, E. R. de; LEAO, P. C. de S.
Afiliação: | WITALO DA SILVA SALES, UNIVASF; FRANCINE HIROMI ISHIKAWA, UNIVASF; EMILLE MAYARA DE CARVALHO SOUZA, Mestranda da Universidade Federal do Recôncavo da Bah; JOSÉ HENRIQUE BERNARDINO NASCIMENTO, Mestrando dq Universidade Federal do Recôncavo da Baha; EDIMARA RIBEIRO DE SOUZA, Estagiária da Embrapa Semiárido; PATRICIA COELHO DE SOUZA LEAO, CPATSA.
Título: | Estimates of repeatability for selection of genotypes of seedless table grapes for Brazilian semiarid regions.
Ano de publicação: | 2019
Fonte/Imprenta: | Scientia Horticulturae, v. 245, n. 9, p. 131-136, fev. 2019.
DOI: | 10.1016/j.scienta.2018.10.018
Idioma: | Inglês
Conteúdo: | Grapevine (Vitis vinifera L.) produces one of the most consumed fruits in the world. Nonetheless, there is a lack of table grape cultivars that are adapted to Brazilian semiarid conditions. Therefore, there is a need for new table grape cultivars for formation of commercial vineyards in these areas. Thus, the objective of this study was to select promising genotypes for cultivation under semiarid conditions using the methodology of mixed models: restricted maximum likelihood/best linear unbiased prediction (REML/BLUP) models. Eighty-one individual plants (genotypes) were evaluated, in three crop seasons, during the years 2016 and 2017, for six descriptors. The estimates of the repeatability coefficient were high for most of the key traits during table grape breeding, except for total soluble solids (°Bx), 0.28, and the ratio of total soluble solids to titratable acidity (0.30). Predicted selection gains for the 30 superior genotypes provided maximum average values of 46.84?t ha?1 per crop (the yield), 150.64 bunches per plant (number of bunches), and 745.21?g (bunch weight). The selective accuracy predicted for the six evaluated traits revealed a good degree of confidence in the inferences and high precision and selection gain. Using the minimum selection indexes proposed in this study for three crop seasons, genotypes CPATSA 01.02, 02.15, 05.02, 06.123, 15.05, 15.06, 19.06, 19.10, 21.42, and 68.06 were found to be the most promising. In this group, genotypes CPATSA 15.05 and 15.06 stood out because they are completely devoid of seeds. Therefore, these genotypes will be chosen for advanced selection to prove their potential for cultivation in Brazilian semiarid regions.
Palavras-Chave: | Semiarido; Uva de mesa; Uva sem semente.
Thesagro: | Genótipo; Uva.
Thesaurus Nal: | Seedless varieties; Vitis.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (57597-1) - UPC - AP - DD -  -  -  - DIS