Phenotypic stability and genetic gains in six-year girth growth of Hevea clones
Rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Müell. Arg.] budgrafts of seven clones were evaluated on five contrasting sites in the plateau region of the São Paulo State, Brazil. The objective of this work was to study the phenotypic stability for girth growth. The experimental design w...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Embrapa Informação Tecnológica
1999-07-01
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| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700015&lng=en&tlng=en |
| _version_ | 1811240765440917504 |
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| author | Paulo de Souza Gonçalves Alberto Kazutoshi Fujihara Altino Aldo Ortolani Ondino Cleante Bataglia Nelson Bortoletto Ivo Segnini Junior |
| author_facet | Paulo de Souza Gonçalves Alberto Kazutoshi Fujihara Altino Aldo Ortolani Ondino Cleante Bataglia Nelson Bortoletto Ivo Segnini Junior |
| author_sort | Paulo de Souza Gonçalves |
| collection | DOAJ |
| description | Rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Müell. Arg.] budgrafts of seven clones were evaluated on five contrasting sites in the plateau region of the São Paulo State, Brazil. The objective of this work was to study the phenotypic stability for girth growth. The experimental design was a randomized block design with three replications and seven treatments. Analysis of variance of girth at six-year plant growth indicated a highly significant clone x site interaction. Only linear sites and clone x site components of clone x year interaction were significant, indicating that the performance of clones over sites for this trait could be predicted. The clones GT 1 and PB 235 showed the greatest stability in relation to girth growth, with foreseen responses to change, introduced in the sites. The clones PB 235 and IAN 873 showed significative difference in relation to regression coefficient, representing clones with specific adaptability on favorable and unfavorable sites respectively. The clone GT 1 became the most promissory one in the study of stability and adaptability even showing low girth growth. Expected genetic gains from planting sites, along with estimates of clonal variance and repeatability of clonal means are generally greatest or close to the greatest when selection is done at the same site. |
| first_indexed | 2024-04-12T13:26:04Z |
| format | Article |
| id | doaj.art-37be13270a094feba341931f255b1430 |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-04-12T13:26:04Z |
| publishDate | 1999-07-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-37be13270a094feba341931f255b14302022-12-22T03:31:20ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39211999-07-0134712231232S0100-204X1999000700015Phenotypic stability and genetic gains in six-year girth growth of Hevea clonesPaulo de Souza GonçalvesAlberto Kazutoshi FujiharaAltino Aldo OrtolaniOndino Cleante BatagliaNelson BortolettoIvo Segnini JuniorRubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Müell. Arg.] budgrafts of seven clones were evaluated on five contrasting sites in the plateau region of the São Paulo State, Brazil. The objective of this work was to study the phenotypic stability for girth growth. The experimental design was a randomized block design with three replications and seven treatments. Analysis of variance of girth at six-year plant growth indicated a highly significant clone x site interaction. Only linear sites and clone x site components of clone x year interaction were significant, indicating that the performance of clones over sites for this trait could be predicted. The clones GT 1 and PB 235 showed the greatest stability in relation to girth growth, with foreseen responses to change, introduced in the sites. The clones PB 235 and IAN 873 showed significative difference in relation to regression coefficient, representing clones with specific adaptability on favorable and unfavorable sites respectively. The clone GT 1 became the most promissory one in the study of stability and adaptability even showing low girth growth. Expected genetic gains from planting sites, along with estimates of clonal variance and repeatability of clonal means are generally greatest or close to the greatest when selection is done at the same site.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700015&lng=en&tlng=enHevea brasiliensisherdabilidaderepetibilidade |
| spellingShingle | Paulo de Souza Gonçalves Alberto Kazutoshi Fujihara Altino Aldo Ortolani Ondino Cleante Bataglia Nelson Bortoletto Ivo Segnini Junior Phenotypic stability and genetic gains in six-year girth growth of Hevea clones Pesquisa Agropecuária Brasileira Hevea brasiliensis herdabilidade repetibilidade |
| title | Phenotypic stability and genetic gains in six-year girth growth of Hevea clones |
| title_full | Phenotypic stability and genetic gains in six-year girth growth of Hevea clones |
| title_fullStr | Phenotypic stability and genetic gains in six-year girth growth of Hevea clones |
| title_full_unstemmed | Phenotypic stability and genetic gains in six-year girth growth of Hevea clones |
| title_short | Phenotypic stability and genetic gains in six-year girth growth of Hevea clones |
| title_sort | phenotypic stability and genetic gains in six year girth growth of hevea clones |
| topic | Hevea brasiliensis herdabilidade repetibilidade |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700015&lng=en&tlng=en |
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