Data/hora: 25/06/2024 05:39:05

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 14/03/2019
Data da última atualização: | 02/12/2019
Autoria: | BORGES, R. M. E.; LIMA, M. A. C. de; LIMA NETO, I. da S.; MELO, N. F. de.
Afiliação: | RITA MERCIA ESTIGARRIBIA BORGES FAUSTINO, CPATSA; MARIA AUXILIADORA COELHO DE LIMA, CPATSA; IZAIAS DA SILVA LIMA NETO, UNIVASF; NATONIEL FRANKLIN DE MELO, CPATSA.
Título: | Prediction of genetic and selection parameters in pumpkin (Cucurbita moschata Duch.) progenies for morphoagronomic characteristics and pulp quality.
Ano de publicação: | 2019
Fonte/Imprenta: | Australian Journal of Crop Science, v. 13, n. 2, p. 199-207, 2019.
ISSN: | 1835-2707
DOI: | 10.21475/ajcs.19.13.02.p1192
Idioma: | Inglês
Conteúdo: | The estimation of genetic parameters allows for the selection of superior individuals for important traits in plant breeding. The objectives of the present study were to estimate and predict the gains in genetic parameters, as well as to select superior individuals for morphoagronomic and pulp quality characteristics in C. moschata. Ten progenies derived from accessions collected in the northeast of Brazil were evaluated for 17 morphoagronomic characteristics and chemical quality of the pulp, including total carotenoids and &#946;-carotene. The low values of additive genetic variance denote the need for additional selection cycles for the evaluated characteristics. Heritability greater than 30% was observed for 13 of the 17 variables analysed, indicating success in selection. Likewise, accuracy values between 74 and 93% were obtained for 15 of the evaluated variables, demonstrating the existence of high genetic variance. Individual ranking was conducted for the variables fruit weight (FRW), soluble solid content (SSC), titratable acidity (TA), total carotenoid content (CBT) and &#946;-carotene (&#946;-Car), identifying five individuals of progeny 10 that were promising for advancement in selection for SSC, CBT and &#946;-car. In ranking the simultaneous evaluations for all the characteristics and taking into account the formats piriform and 'moranga', two individuals of progeny 10, which coincided with the top ranking for SSC, CBT and &#946;-car, were identified. This identification of more than one promising individual enhances the potential of the progenies evaluated for the development of commercial and productive lines in semi-arid conditions.
Palavras-Chave: | Herdabilidade; Qualidade da polpa.
Thesagro: | Abóbora; Cucúrbita Moschata; Índice de Seleção; Melhoramento Genético Vegetal.
Thesaurus Nal: | Cucurbita.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/194209/1/Rita-2019.pdf
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (58144-1) - UPC - AP - DD -  -  -  - DIS