Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1187409
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dc.contributor.authorCARVALHO, A. M. de
dc.contributor.authorSOUZA, J. L.
dc.contributor.authorRANGEL, J. H. A.
dc.contributor.authorSOUZA, S. F. de
dc.contributor.authorMUNIZ, E. N.
dc.contributor.authorSILVA, A. V. C. da
dc.date.accessioned2026-06-09T20:20:08Z-
dc.date.available2026-06-09T20:20:08Z-
dc.date.created2026-06-09
dc.date.issued2026
dc.identifier.citationScientia Agricola, v. 83, e20250030, 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1187409-
dc.descriptionGliricidia sepium is a tree species native to the Americas that has been disseminated throughout various regions of the world due to its drought adaptability. In response to the productive sector's demand for the development of cultivars, Empresa Brasileira de Pesquisa Agropecuária (Embrapa) has invested in breeding initiatives. These include establishing a germplasm bank and identifying individuals with agronomic traits of interest. This study aimed to estimate the genetic diversity of gliricidia in the different regions of Brazil and to establish a germplasm bank using inter simple sequence repeat (ISSR) markers. Plant material was obtained through field collections and exchanges with other institutions from 17 populations from five Brazilian states, and young leaves were collected from a total of 115 individuals. The ISSR markers yielded 36 bands with 88.9 % polymorphism and an average polymorphism information content (PIC) of 0.27. The evaluated parameters indicated low genetic diversity, with a Shannon index (I) of 0.19, Nei's Genetic Distance of 0.21, and an expected heterozygosity (He) of 0.13. A unweighted pair group method with arithmetic mean (UPGMA) analysis clustered the individuals into six groups, indicating a restricted origin for the gliricidia genetic material. Genetic structure analysis using the Structure software indicated the formation of two main groups, along with individuals with mixed ancestry, suggesting partial genetic admixture between the groups. The results of this study will guide the breeding program for gliricidia, with the germplasm bank continuously evaluated and enriched with new accessions.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectISSR markers
dc.subjectGermplasm bank
dc.subjectTropical forage
dc.titleGenetic structure and diversity of Gliricidia sepium in Brazil: implications for conservation and breeding.
dc.typeArtigo de periódico
dc.subject.nalthesaurusGenetic resources
riaa.ainfo.id1187409
riaa.ainfo.lastupdate2026-06-09
dc.identifier.doihttps://doi.org/10.1590/1678-992X-2025-0030
dc.contributor.institutionAIRTON MARQUES DE CARVALHO, UNIVERSIDADE FEDERAL DE SERGIPE; JULIANA LOPES SOUZA, CENARGEN; JOSÉ HENRIQUE ALBUQUERQUE RANGEL; SAMUEL FIGUEIREDO DE SOUZA, CPATC; EVANDRO NEVES MUNIZ, CPATC; ANA VERUSKA CRUZ DA SILVA MUNIZ, CPATC.
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