Estimates of genetic gains for growth traits in young plants of Eucalyptus urophylla S. T. Blake

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dc.creatorThais Galhardo Godoy
dc.creatorSebastião Carlos da Silva Rosado
dc.date2011
dc.date.accessioned2026-07-07T02:40:16Z
dc.descriptionThe objective of this study was the selection of superior genotypes for growth traits, correlating them to initial height growth in the fi eld, at age eight months. A random block design was used in the nursery, with eight clones, three replicates and four plants per plot. And a random block design was also used in the fi eld, with eight clones, four replicate blocks and nine plants per plot. Data being analyzed in the nursery at age 120 days included: height of fi eld seedling, at age eight months (Hc), height of nursery seedling (Hm), root collar diameter (Dc), shoot diameter (Db), shoot dry matter (PMSPA), root dry matter (PMSR), totaldry matter (PMST), ratio of shoot dry matter to root dry matter (PMSPA/PMSR), Dickson quality index of root collar diameter (IQD-Dc), Dickson quality index of shoot diameter (IQD-Db). Analyses of variance showed that signifi cant genetic differences exist among clones for all traits and, given the high heritability values found, the estimated genetic gains were generically very high. As for predicted indirect genetic gain, selection in nursery seedlings for Dc, PMSPA/PMSR, IQD-Dc provided the highest values of indirect gain in fi eld seedling height.
dc.formatapplication/pdf
dc.identifier0104-7760
dc.identifierhttps://www.redalyc.org/articulo.oa?id=74418601005
dc.identifier.urihttp://hdl.handle.net/123456789/421034
dc.languagees
dc.publisherUniversidade Federal de Lavras
dc.relationhttp://www.redalyc.org/revista.oa?id=744
dc.rightsCERNE
dc.sourceCERNE (Brasil) Num.2 Vol.17
dc.subjectAgrociencias
dc.titleEstimates of genetic gains for growth traits in young plants of Eucalyptus urophylla S. T. Blake
dc.typeartículo científico

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