Genetic variation in growth traits and yield of rubber trees (Hevea brasiliensis) growing in the Brazilian state of São Paulo

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorde Souza Gonçalves, Paulo
dc.creatorde Moraes, Mário Luiz Teixeira
dc.creatorBortoletto, Nelson
dc.creatorda Costa, Reginaldo Brito
dc.creatorGonçalves, Elaine Cristine Pifer
dc.date2014-05-27T11:21:38Z
dc.date2016-10-25T18:21:10Z
dc.date2014-05-27T11:21:38Z
dc.date2016-10-25T18:21:10Z
dc.date2005-10-01
dc.date.accessioned2017-04-06T01:14:49Z
dc.date.available2017-04-06T01:14:49Z
dc.identifierGenetics and Molecular Biology, v. 28, n. 4, p. 765-772, 2005.
dc.identifier1415-4757
dc.identifier1678-4685
dc.identifierhttp://hdl.handle.net/11449/68430
dc.identifierhttp://acervodigital.unesp.br/handle/11449/68430
dc.identifier10.1590/S1415-47572005000500019
dc.identifierS1415-47572005000500019
dc.identifierWOS:000246081500019
dc.identifier2-s2.0-31444438563.pdf
dc.identifier2-s2.0-31444438563
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572005000500019
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/889768
dc.descriptionAnalysis of variance and covariance was preformed on growth traits (stem girth, bark thickness, total height gain and rubber yield) of 22 open-pollinated progenies of the rubber tree Hevea brasiliensis from an Asian Hevea collection introduced to Agronomic Institute (Instituto Agronômico, Campinas, São Paulo, Brazil; IAC) in 1952. This progeny trial was replicated at three sites in São Paulo state and it was found that at three years from sowing there was statistically significant variation for girth, bark thickness, height and rubber yield. An individual test sites, values of individual plant heritability for girth ranged from ĥ i 2 = 0.36 to ĥ i 2 = 0.89 whereas values for heritability for progeny means ranged from ĥ i 2 = 0.77 to ĥ i 2 = 0.87. These moderate and high heritabilities suggest that a combination of progeny and within-progeny selection would be effective at increasing girth in this population at individual sites. Across sites, values of individual-plant heritability for girth ranged from ĥ i 2 = 0.36 to ĥ i 2 = 0.47, whereas values for heritability of progeny means girth ranged from ĥ x̄ 2 = 0.77 to ĥ x̄ 2 = 0.87. There were high positive genetic correlations between increased girth and bark thickness suggesting that breeding aimed at increasing girth would also increase bark thickness and possibly height. Copyright by the Brazilian Society of Genetics.
dc.languageeng
dc.relationGenetics and Molecular Biology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectGenetic parameters
dc.subjectHeritability
dc.subjectHevea brasiliensis
dc.subjectRubber tree
dc.subjectrubber
dc.subjectanalysis of covariance
dc.subjectanalysis of variance
dc.subjectbark
dc.subjectBrazil
dc.subjectcontrolled study
dc.subjectgenetic correlation
dc.subjectgenetic selection
dc.subjectgenetic trait
dc.subjectgenetic variability
dc.subjectheritability
dc.subjectnonhuman
dc.subjectplant breeding
dc.subjectplant genetics
dc.subjectplant growth
dc.subjectplant height
dc.subjectplant yield
dc.subjectpollination
dc.subjectprogeny
dc.subjectsowing
dc.subjectstatistical significance
dc.subjecttree trunk
dc.subjectHevea
dc.titleGenetic variation in growth traits and yield of rubber trees (Hevea brasiliensis) growing in the Brazilian state of São Paulo
dc.typeOtro


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