Musa spp

Selection of putative Terra Maranhão plantain cultivar mutants obtained by gamma radiation

R. V. Reis, Amorim, E. P., Ledo, C. A. S., Pestana, R. K. N., Gonçalves, Z. S., and Borém, A., “Selection of putative Terra Maranhão plantain cultivar mutants obtained by gamma radiation”, vol. 14, pp. 4687-4695, 2015.

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 the best 10% of the plants. Cultivation was undertaken at a spacing of 3 x 4 m, and fertilization was carried out according to the technical recommendations for the crop.

Genetic diversity of Mycosphaerella fijiensis in Brazil analyzed using an ERIC-PCR marker

G. F. Silva, Paixão, R. D. V., Queiroz, C. B., Santana, M. F., Souza, A., Sousa, N. R., Hanada, R. E., and Gasparotto, L., “Genetic diversity of Mycosphaerella fijiensis in Brazil analyzed using an ERIC-PCR marker”, vol. 13, pp. 7698-7707, 2014.

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 sites in Brazil. A total of 9 loci were amplified, 77.8% of which were found to be polymorphic. The genetic diversity found in the population was 0.20.

Endophytic bacteria from banana cultivars and their antifungal activity

A. Souza, Cruz, J. C., Sousa, N. R., Procópio, A. R. L., and Silva, G. F., “Endophytic bacteria from banana cultivars and their antifungal activity”, vol. 13, pp. 8661-8670, 2014.

Endophytic microorganisms consist of fungi, bacteria, and actinomycetes that play important roles in the process of plant adaptation to the environment. Currently, the natural associations between microorganisms and plant species are being explored for a large number of biotechnological applications. In this study, 122 endophytic bacteria were isolated from 5 cultivars of Musa spp from the state of Amazonas (Brazil). Four strains were selected because they exhibited antagonistic activities against Fusarium oxysporum f.

New microsatellite markers for bananas (Musa spp)

E. P. Amorim, Silva, P. H., Ferreira, C. F., Amorim, V. B. O., Santos, V. J., Vilarinhos, A. D., Santos, C. M. R., Júnior, M. T. Souza, and Miller, R. N. G., “New microsatellite markers for bananas (Musa spp)”, vol. 11. pp. 1093-1098, 2012.

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 considered highly informative based on their polymorphism information content values; more than 50% were above 0.5.

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