Carica papaya L.

Genetic-molecular characterization of backcross generations for sexual conversion in papaya (Carica papaya L.)

H. C. C. Ramos, Pereira, M. G., Pereira, T. N. S., Barros, G. B. A., and Ferreguetti, G. A., Genetic-molecular characterization of backcross generations for sexual conversion in papaya (Carica papaya L.), vol. 13, pp. 10367-10381, 2014.

The low number of improved cultivars limits the expansion of the papaya crop, particularly because of the time required for the development of new varieties using classical procedures. Molecular techniques associated with conventional procedures accelerate this process and allow targeted improvements. Thus, we used microsatellite markers to perform genetic-molecular characterization of papaya genotypes obtained from 3 backcross generations to monitor the inbreeding level and parental genome proportion in the evaluated genotypes.

Use of morpho-agronomic traits and DNA profiling for classification of genetic diversity in papaya

O. N. de Jesus, de Freitas, J. P. X., Dantas, J. L. L., and de Oliveira, E. J., Use of morpho-agronomic traits and DNA profiling for classification of genetic diversity in papaya, vol. 12, pp. 6646-6663, 2013.

We examined the genetic diversity of papaya (Carica papaya) based on morpho-agronomic and molecular data. Twenty-seven genotypes grown in Brazil were analyzed with 11 AFLP primer combinations, 23 ISSR markers, 22 qualitative, and 30 quantitative descriptors. For the joint analyses, we used the Gower algorithm (Joint Gower) and the average value of the individual dissimilarity matrix for each type of data (Average-Joint Gower); 359 AFLP and 52 ISSR polymorphic bands were found.

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