01845naa a2200301 a 450000100080000000500110000800800410001902400300006010000200009024501370011026000090024752009580025665000150121465300220122965300180125165300270126965300210129670000190131770000150133670000230135170000150137470000190138970000240140870000150143270000210144770000230146877300520149121787992025-12-02       2025    bl uuuu     u00u1 u    #d7 a10.2478/sg-2025-00022DOI1 aROCHA, G. N. da  aGenetic diversity in wild and breeding populations and clones of Eucalyptus urophylla and Eucalyptus grandis.h[electronic resource]  c2025  aBrazil has a long history of intensive silviculture with Eucalyptus species, mainly Eucalyptus urophylla and E. grandis. However, breeding advances may reduce genetic diversity in bred populations. Nine microsatellite markers assessed genetic diversity in wild and improved populations of E. urophylla and E. grandis, and genetic similarity in nine widely planted clones. Four wild populations of E. urophylla were evaluated: Flores, Timor-Leste, Timor and other Islands, along with three improved populations. For E. grandis, one wild and one improved population were analyzed. Results showed higher genetic diversity in improved populations, possibly due to admixed composition from different provenances. Wild populations of E. urophylla formed two distinct groups. All clones were genetically similar to improved E. urophylla populations. Some clones are inter-specific hybrids, contradicting their reported pedigree, but predominantly E. urophylla.  aEucalyptus  aGenetic diversity  aHybrid clones  aMicrosatellite markers  aTree improvement1 aSEBBENN, A. M.1 aARAUJO, M.1 aCOSTA, L. O. S. da1 aNOVAES, E.1 aMIRANDA, A. C.1 aMORAES, M. L. T. de1 aLEE, D. J.1 aGRATTAPAGLIA, D.1 aSILVA, P. H. M. da  tSilvae Geneticagv. 74, n. 1, p. 216-223, 2025.