Genetic variability and selection for laticiferous system characters in Hevea brasiliensis

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dc.contributor.authorGonçalves, Paulo de Souza
dc.contributor.authorCardinal, Átila Bento Beleti
dc.contributor.authorCosta, Reginaldo Brito da
dc.contributor.authorBortoletto, Nelson
dc.contributor.authorGouvêa, Lígia Regina Lima
dc.date.accessioned2024-05-16T19:35:35Z
dc.date.available2024-05-16T19:35:35Z
dc.date.issued2005
dc.description.abstractSix laticiferous system characters were investigated in 22 three-year-old, half-sib rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] progenies, evaluated at three sites (Votuporanga, Pindorama and Jaú, all in the São Paulo State, Brazil). The traits examined were: average rubber yield (Pp), average bark thickness (Bt), number of latex vessel rings (Lv), average distance between consecutive latex vessel rings (Dc), density of latex vessels per 5 mm per ring averaged over all rings (Dd) and the diameter of the latex vessels (Di). The joint analysis showed that site effect and progeny x sites interaction were significant for all traits, except Lv. Estimates of individual heritabilities across the three sites were high for Bt; moderate for Lv, Pp and Dc; low for Dd and very low for Di. Genetic correlations in the joint analysis showed high positive correlations between Pp and the other traits. Selecting the best five progenies would result in genetic gains of 24.91% for Pp while selecting best two plants within a progeny would result in a Pp genetic gain of 30.98%.
dc.identifier.issn1415-4757
dc.identifier.otherS1415-47572005000300014-scl
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/1722
dc.relation.ispartofGenetics and Molecular Biology
dc.subjectHevea brasiliensis
dc.subjectrubber yield
dc.subjectlaticiferous traits
dc.subjectgenetic parameters
dc.titleGenetic variability and selection for laticiferous system characters in Hevea brasiliensis
dc.typeArtigos
oaire.citation.endPage422
oaire.citation.issue3
oaire.citation.startPage414
oaire.citation.volume28

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