MORPHOLOGICAL CHARACTERIZATION AND GENETIC DIVERSITY IN ORNAMENTAL SPECIMENS OF THE GENUS SANSEVIERIA

Mércia de Carvalho Almeida  Rêgo; Angela Celis de Almeida Lopes; Roseli Farias Melo de Barros; Alonso Mota  Lamas; Marcones Ferreira Costa; Regina Lucia  Ferreira-Gomes

doi:10.1590/1983-21252020v33n413rc

Authors

Mércia de Carvalho Almeida Rêgo Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0001-6453-9353
Angela Celis de Almeida Lopes Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0002-9546-5403
Roseli Farias Melo de Barros Department of Biology, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0001-9767-5546
Alonso Mota Lamas Ministry of Agriculture, Cattle and Supplying, MAPA, Teresina, PI https://orcid.org/0000-0003-0555-9324
Marcones Ferreira Costa University Campus Amílcar Ferreira Sobral, Universidade Federal do Piauí, Floriano, PI https://orcid.org/0000-0001-8210-2673
Regina Lucia Ferreira-Gomes Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0002-7700-6959

DOI:

https://doi.org/10.1590/1983-21252020v33n413rc

Keywords:

Germplasm collection. Genetic diversity. Ornamental plants.

Abstract

The aim of this study was to characterize and estimate genetic divergence among twelve specimens of the Sansevieria genus from the collection of the Universidade Federal do Piauí (UFPI). A completely randomized experimental design was used with three replicates, and the plot consisted of four plants. In morphological characterization, qualitative and quantitative descriptors of leaves were evaluated. Genetic divergence among the specimens was determined by the Tocher clustering method and the hierarchical UPGMA. There is genetic variation among specimens evaluated, which was also expressed by the variability of colors, shapes, and sizes of the leaves. The Tocher clustering method and the hierarchical UPGMA were effective in differentiation of the specimens from multi-categorical qualitative descriptors, as the Tocher method grouped the accessions in two groups and the UPGMA in seven different groups. We highlight the accessions SSV 09 and SSV 10 as exhibiting the highest mean values in weekly leaf growth and in leaf height, important characteristics for local sale and for export.

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