HERANÇA E LIGAÇÃO EM LOCOS DE ISOENZIMAS EM Genipa americana L.
DOI:
https://doi.org/10.24278/2178-5031.2004161454Keywords:
segregation, jenipapo, tropical tree speciesAbstract
Inheritance and linkage for four polymorphic loci (6pghd-1, Pgi-2, Mdh-1 and Mdh-2) from three enzyme systems in Genipa americana were analyzed by horizontal starch gel electrophoresis using tissues collected from fifty open-pollinated families in Moji-Guaçu, São Paulo State. These allozyme loci have segregated from two to four alleles per polymorphic locus. Gene segregation on those loci was homogeneous among trees. However, there were significant deviations from the expected segregation ratios on some loci and some individual trees. In addition, Mdh-2 and 6pgdh-1 loci have shown significant deviations from the 1:1 expected segregation ratio. Linkage disequilibrium evidences were not detected between any two pairs of loci from G. americana and those can be used with no restriction to study the mating system, genetic diversity, and genetic structure on the species.
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