| Registro completo |
| Provedor de dados: |
Bragantia
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| País: |
Brazil
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| Título: |
Selection strategies in a segregating passion fruit population aided by classic and molecular techniques
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| Autores: |
Preisigke,Sandra da Costa
Viana,Alexandre Pio
Santos,Eileen Azevedo
Santos,Paulo Ricardo dos
Santos,Valquíria Oliveira dos
Ambrósio,Moisés
Silva,Flávia Alves da
Walter,Fernando Henrique de Barros
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| Data: |
2020-03-01
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| Ano: |
2020
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| Palavras-chave: |
Passiflora
CABMV
Backcross
Parental proportion
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| Resumo: |
ABSTRACT Combining the use of agronomic, disease-resistance, and molecular informationcan greatly contribute to genetic progress in breeding programs. This study was developed to estimate the genetic distance between genotypes derived from backcrosses and their parents using morphoagronomic and molecular information and information pertaining to resistance to the Cowpea aphid-borne mosaic virus (CABMV), and indicate genotypes with potential for generation advancement. The studied population consisted of 91 genotypes from the first backcross, oneinterspecific hybrid, and the species Passiflora setacea and P. edulis. For morphoagronomic characterization, the traits number of fruits, total fruit weight, average fruit weight, and area under the disease progress curve (AUDPC, related to resistance to CABMV) were evaluated. Fourteen microsatellite primers were used to estimate genetic diversity among the genotypes, estimatediversity parameters and quantify the proportion of parental genome in the evaluated genotypes. The use of morphoagronomic and molecular information revealed the existence of genetic variability among the genotypes. The mean number of alleles is close to that expected for the population. Observed heterozygosity (0.42) was higher than the expected heterozygosity (0.30), indicating an elevated number of heterozygous individuals in the population. Due to their good agronomic performance, resistance to the virus, and genotypic and phenotypic distinction, genotypes 484 and 312 are recommended to compose the future stages of the passion fruit breeding program aimed at resistance to CABMV
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052020000100047
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| Editor: |
Instituto Agronômico de Campinas
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| Relação: |
10.1590/1678-4499.20190291
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| Formato: |
text/html
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| Fonte: |
Bragantia v.79 n.1 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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