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Characterization and selection of passion fruit (yellow and purple) accessions based on molecular markers and disease reactions for use in breeding programs

Texto completo
Cerqueira-Silva, C. B. M. [1, 2] ; Jesus, O. N. [3] ; Oliveira, E. J. [3] ; Santos, E. S. L. [1, 2] ; Souza, A. P. [1, 4]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Ctr Biol Mol & Engn Genet, Campinas, SP - Brazil
[2] Univ Estadual Sudoeste Bahia, Dept Ciencias Exatas & Nat, Itapetinga, BA - Brazil
[3] Empresa Brasileira Pesquisa Agr, Ctr Nacl Pesquisa Mandioca & Fruticultura, Cruz Das Almas, BA - Brazil
[4] Univ Estadual Campinas, Dept Biol Vegetal, Sao Paulo - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: EUPHYTICA; v. 202, n. 3, p. 345-359, APR 2015.
Citações Web of Science: 9

Passiflora edulis Sims, which is native to South America, stands out as a passion fruit species with major potential for fruit production and marketing. This species is popularly known as yellow or purple passion fruit, depending on the color of the fruits produced. Brazil is the major worldwide producer of passion fruit; however, the average productivity of the country is low compared with its potential for culture. Fungal, bacterial and viral pathogens are among the factors limiting the productivity of passion fruit. Furthermore, no existing cultivars exhibit both productivity and resistance to disease. To select genetic material that will be useful for core collections and for increasing the genetic resistance of passion fruit cultivars to pathogens, we characterized 36 accessions based on 23 microsatellite loci and six variables related to the reactions to three diseases (woodiness virus, scab and anthracnose). We identified 127 alleles (an average of 5.52 alleles per locus), 30 % of which were private for yellow or purple passion fruit accessions. Analysis of variance and mean comparison tests indicated differences in five of the six variables (p < 0.05, Scott-Knott test). Differences between the average reactions of the yellow and purple passion fruit accessions were also observed for the symptoms of woodiness virus and anthracnose (p < 0.05, Mann-Whitney test).Together with these results, molecular and phenotypic estimates allowed the identification of groups of preferential accessions for use in breeding programs, for example, accessions BGP029, 071, 168, 205 and 277. (AU)

Processo FAPESP: 08/52197-4 - Genomic-assisted breeding of sugarcane: using molecular markers for understanding the genetic architecture of quantitative traits and to implement marker assisted selection
Beneficiário:Anete Pereira de Souza
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Temático