Title:	Recurrent selection of pumpkin (Cucurbita moschata) genotypes to increase fruit quality.
Authors:	BONFIM, W. M. D. LIMA, M. A. C. de COSTA, C. dos S. R. BORGES, R. M. E. SILVA, B. F. R. da OLIVEIRA, T. G. B. de MENDONÇA JUNIOR, A. F. de
Affiliation:	WILYANNE MONIQUE DANÔA BONFIM, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; MARIA AUXILIADORA COELHO DE LIMA, CPATSA; CRISTINA DOS SANTOS RIBEIRO COSTA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; RITA MERCIA ESTIGARRIBIA B FAUSTINO, CPATSA; BARBARA FERNANDA RIBEIRO DA SILVA, UNIVERSIDADE FEDERAL DE FEIRA DE SANTANA; TAMIRIS GEORGIA BARROS SOARES DE OLIVEIRA, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; ANTÔNIO FRANCISCO DE MENDONÇA JUNIOR, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO.
Date Issued:	2024
Citation:	Euphytica, v. 220, n. 156, 2024.
Description:	The aim of pumpkin breeding programs is to develop cultivars that meet the production, commercial quality, and nutritional value, considering several attributes. Therefore, the objective of this study was to select pumpkin genotypes with high fruit quality for future use in genetic breeding programs. Two production cycles were carried out. The evaluations included the determination of genetic parameters (the additive genetic variance, environmental variance between residual variances and individual phenotypic variance, accuracy of progeny selection, restricted heritability, coefcient of individual additive genetic variation, coefcient of genotypic variation between progenies, coefcient of residual variation, coefcient of relative variation, variance of the prediction error of the genotypic values of the progeny), the prediction of genetic gains, and the selection of genotypes with fruits of better physical and chemical quality attributes. The carotenoid and β-carotene contents of the pulp were distinguished by high values of additive genetic variance, residual variance and individual variance. Additionally, genetic gains were achieved for the main carotenoid compounds, as xanthophyll (68%), lycopene (58%) and β-carotene (49%). In the second production cycle, using the technique of Mulamba and Mock, a new ranking method was used to select the best genotypes. These genetic parameters, especially restricted heritability, indicate the potential for advancing new selection stages to develop pumpkin cultivars with superior qualities, including fruit length (0.976), skin thickness (0.951) and orange pigments, particularly β-carotene (0.894). Additionally, frmer fruits with high ascorbic acid content and a pulp hue angle epresenting an orange color were ranked among the best genotypes.
Thesagro:	Abóbora Melhoramento Genético Vegetal Seleção Genética Parâmetro Genético Índice de Seleção Cucúrbita Moschata Genótipo Fruto Qualidade
NAL Thesaurus:	Pumpkins Breeding and Genetic Improvement Selection index Prediction
Keywords:	Composto funcional Previsão de ganho genético Fruto de alta qualidade Programa de Melhoramento Genético
ISSN:	1573-5060
DOI:	https://doi.org/10.1007/s10681-024-03411-5
Notes:	On-line.
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)