Authors: Z. S. Gon�§alves, D. R. S. da Inven�§�£o, C. A. da S. Ledo, C. F. Ferreira, E. P. Amorim
Plantains in Brazil are produced from the `Terra Maranhão’, ‘Terrinha’ and ‘D´Angola’ cultivars, which are all susceptible to black Sigatoka, weevils and nematodes. Therefore, the development of resistant plantain cultivars with agronomic characteristics aligned with market demands i.. Read More»
Authors: M.A. Rodrigues, E.P. Amorim, C.F. Ferreira, C.A.S. Ledo and J.R.F. Santana
Natural fruit finger drop in bananas is one of the major concerns of producers as well as consumers. The aim of this study was to estimate the genetic diversity among 15 diploid bananas with different levels of resistance to finger drop (RFD) using SSR and ISSR (inter-simple sequence repeat) markers, and assess the possibility.. Read More»
Authors: E.P. Amorim, P.H. Silva, C.F. Ferreira, V.B.O. Amorim, V.J. Santos, A.D. Vilarinhos, C.M.R. Santos, M.T. Souza J�ºnior and R.N.G. Miller
Thirty-four microsatellite markers (SSRs) were identified in EST and BAC clones from Musa acuminata burmannicoides var. Calcutta 4 and validated in 22 Musa genotypes from the Banana Germplasm Bank of Embrapa-CNPMF, which includes wild and improved diploids. The number of alleles per locus ranged from 2 to 14. The markers were .. Read More»
Authors: A.V.C. Silva, A.L.S. Nascimento, M.F. Vit�³ria, A.R.C. Rabbani, A.N.R. Soares and A.S. L�©do
Banana (Musa spp) is a fruit species frequently cultivated and consumed worldwide. Molecular markers are important for estimating genetic diversity in germplasm and between genotypes in breeding programs. The objective of this study was to analyze the genetic diversity of 21 banana genotypes (FHIA 23, PA42-44, Maç&atild.. Read More»
Authors: R.V. Reis, E.P. Amorim, C.A.S. Ledo, R.K.N. Pestana, Z.S. Gon�§alvesand A. Bor�©m
The aim of this study was to select putative Terra Maranhão plantain cultivar mutants obtained by gamma radiation, with good agronomic traits and short height. A total of 315 buds were irradiated in vitro with gamma rays in doses of 20 Gy and were subcultivated and evaluated in the field over 2 production cycles. The clones were evaluated to select.. Read More»
Authors: P.R.O. Silva, O.N.J. Jesus, S. Creste, A. Figueira, E.P. Amorim and C.F. Ferreira
Microsatellite markers have been widely used in the quantification of genetic variability and for genetic breeding in Musa spp. The objective of the present study was to evaluate the discriminatory power of microsatellite markers derived from ‘Calcutta 4’ and ‘Ouro’ genomic libraries, and to analyze the genetic variability among 30.. Read More»
Authors: Y.S. Peixouto, C.A. D�³rea Bragan�§a, W.B. Andrade, C.F. Ferreira, F. Haddad, S.A.S. Oliveira, F.S. Darosci Brito, R.N.G. Miller and E.P. Amorim
Among the diseases affecting banana (Musa sp), yellow Sigatoka, caused by the fungal pathogen Mycosphaerella musicola Leach, is considered one of the most important in Brazil, causing losses throughout the year. Understanding the genetic structure of pathogen populations will provide insight into the life history of pathogens, including the evolutionary p.. Read More»
Authors: G.F. Silva, V.S. Santos, N.R. Sousa, R.E. Hanada and L. Gasparotto
Black sigatoka, caused by the fungus Mycosphaerella fijiensis (anamorphic stage: Paracercospora fijiensis), was first detected in Brazil in early 1998 in the Benjamin Constant and Tabatinga municipalities in the State of Amazonas, near to where the borders of Brazil, Colombia, and Peru converge. Understanding how cultivars rea.. Read More»
Authors: G.F. Silva, R.D.V. Paix�£o, C.B. Queiroz, M.F. Santana, A. Souza, N.R. Sousa, R.E. Hanada and L. Gasparotto
The Enterobacterial repetitive intergenic consensus (ERIC) marker was used to analyze the genetic variability of Mycosphaerella fijiensis, the causative agent of Black Sigatoka disease in banana plants. A total of 123 isolates were used, which were divided into populations based on their original hosts and collection .. Read More»