The Brazilian low mean yield is related to phytosanitary issues inadequate crop management non-utilization of improved cultivars and non-utilization of cultivars adapted to the edaphoclimatic conditions of each region of the country ( FALEIRO et al., 2019b FALEIRO, F.G. However, the crop’s potential may exceed 40 tons ha-1 year-1 (FONSECA, 2017). In 2019, the mean Brazilian passion fruit yield was 14.27 ton ha-1 (IBGE 2020). Maracujá melhoramento genético ganho genético seleção de plantasīrazil is the world’s largest producer and consumer of passion fruit ( Passiflora edulis Sims). Os ganhos genéticos obtidos demonstraram boas perspectivas para o uso de espécies silvestres no melhoramento genético do maracujá. As progênies 325 x LD4, P元 x LD4 e testemunhas CSB-Marília e BRS-Gigante amarelo apresentaram plantas com melhores médias preditas para caracteres relacionados à qualidade de fruto.
Plantas da progênie 325 x VAO apresentaram menor índice de desfolhamento por bacteriose e melhores médias preditas para os caracteres número de frutos e para produtividade. Os índices aditivo, multiplicativo e de soma de ranks foram utilizados para determinar a estratégia de seleção mais adequada no melhoramento simultâneo de peso de fruto, no número de frutos e na produtividade. O experimento foi conduzido em blocos casualizados, com seis repetições e três plantas por parcela. Este trabalho objetivou avaliar 11 progênies de híbridos multiespecíficos obtidas através de cruzamentos envolvendo sete espécies de Passiflora, além de quatro cultivares comerciais, utilizando o método REML/BLUP. Passion fruit genetic breeding genetic gain plant selectionĪ introgressão de genes de resistência a doenças em variedades comerciais, por meio de cruzamentos interespecíficos, tem sido adotada como estratégia nos programas de melhoramento de maracujá-azedo. The genetic gains demonstrated good prospects for the use of wild species in sour passion fruit genetic breeding. The progenies 325 x LD4, P元 x LD4, and the controls CSB-Marília and BRS-Gigante Amarelo showed plants with better-predicted means for traits related to fruit quality. Plants from the 325 x VAO progeny showed a lower bacterial defoliation index and better means predicted for the traits number of fruits and productivity. The additive, multiplicative, and sum of ranks indexes were applied to determine the most appropriate selective strategy in the simultaneous increase of fruit weight, number of fruits, and yield. The experiment was carried out as a randomized block design with six repetitions and three plants per plot. This work aimed to evaluate 11 progenies of multispecific hybrids obtained from crosses involving seven Passiflora species, in addition to four commercial cultivars, using the REML/BLUP method. The interspecific introgression of resistance genes to diseases in commercial varieties through interspecific crosses has been adopted as a strategy in breeding programs of sour passion fruit. in Genetics and Plant Breeding, Doctor in Agronomy, University of Brasília, Brasília-DF, Brazil, E-mail: Nilton Tadeu Vilela JunqueiraĪgronomist, Doctor in Phytopathology, Researcher at Embrapa Cerrados, Planaltina-DF, Brazil, E-mail: Leo Duc Haa Carson Schwartzhaupt da ConceiçãoĪgronomist, Doctor in Crop Science, Researcher at Embrapa Uva e Vinho, Bento Golçalves-RS, Brazil, E-mail: Fábio Gelape FaleiroĪgronomist, Doctor in Genetics and Breeding, Researcher at Embrapa Cerrados, Planaltina-DF, Brazil, E-mail: Marcelo Fideles BragaĪgronomist, Doctor in Genetics and Plant Breeding, Researcher at Embrapa Cerrados, Planaltina, DF, Brazil, E-mail: Michelle Souza VilelaĪgronomist, Doctor in Agronomy, Professor at College of Agronomy and Veterinary Medicine, University of Brasília, Brasília-DF, Brazil, E-mail: About the authors