Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará
Abstract This study aimed to use the canopy replacement technique to reduce the field evaluation time and to select promising cupuassu tree clones. The study was carried out under field conditions using fifteen-year-old trees. The crowns were replaced using 16 treatments (clones). The experiment wa...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Fruticultura
2020-07-01
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| Series: | Revista Brasileira de Fruticultura |
| Subjects: | |
| Online Access: | http://www.scielo.br/pdf/rbf/v42n4/0100-2945-rbf-42-4-e-597.pdf |
| _version_ | 1798026131817889792 |
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| author | Rafael Moysés Alves Saulo Fabrício da Silva Chaves Raimundo Parente de Oliveira Jack Loureiro Pedroza Neto Alexandre Sebbenn |
| author_facet | Rafael Moysés Alves Saulo Fabrício da Silva Chaves Raimundo Parente de Oliveira Jack Loureiro Pedroza Neto Alexandre Sebbenn |
| author_sort | Rafael Moysés Alves |
| collection | DOAJ |
| description | Abstract This study aimed to use the canopy replacement technique to reduce the field evaluation time and to select promising cupuassu tree clones. The study was carried out under field conditions using fifteen-year-old trees. The crowns were replaced using 16 treatments (clones). The experiment was conducted using randomized blocks design with 18 replicates and one plant per plot, during a period of ten years. The following variables were evaluated: average number of fruits, fruit, seed and pulp production (kg/plant) and symptoms of “witches broom” disease. The data were checked for normality followed by analysis of variance. The results highlighted clones 32, 42, 44, 46, 47, 61, 62, 63 and 64, presenting characteristics such as productivity, tolerance to witches’ broom disease and interesting fruit characteristics. The results demonstrate that the technique was effective in the evaluation of cupuassu tree genotypes, since the clones revealed their potential at early stages after establishment in the field. There was a reduction by at least 30% regarding the time needed to evaluate cupuassu tree genotypes. Five clones (32, 42, 46, 61 and 64) already present the potential to be made available to producers, aimed at replacing the canopy of unproductive trees. |
| first_indexed | 2024-04-11T18:30:12Z |
| format | Article |
| id | doaj.art-d9a7b4808bd14a59aaa76fc4eca0e35e |
| institution | Directory Open Access Journal |
| issn | 1806-9967 |
| language | English |
| last_indexed | 2024-04-11T18:30:12Z |
| publishDate | 2020-07-01 |
| publisher | Sociedade Brasileira de Fruticultura |
| record_format | Article |
| series | Revista Brasileira de Fruticultura |
| spelling | doaj.art-d9a7b4808bd14a59aaa76fc4eca0e35e2022-12-22T04:09:30ZengSociedade Brasileira de FruticulturaRevista Brasileira de Fruticultura1806-99672020-07-0142410.1590/0100-29452020597Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of ParáRafael Moysés Alveshttps://orcid.org/0000-0002-9826-4690Saulo Fabrício da Silva Chaveshttps://orcid.org/0000-0002-0694-1798Raimundo Parente de Oliveirahttps://orcid.org/0000-0002-0643-1923Jack Loureiro Pedroza Netohttps://orcid.org/0000-0002-8842-9623Alexandre Sebbennhttps://orcid.org/0000-0003-2352-0941Abstract This study aimed to use the canopy replacement technique to reduce the field evaluation time and to select promising cupuassu tree clones. The study was carried out under field conditions using fifteen-year-old trees. The crowns were replaced using 16 treatments (clones). The experiment was conducted using randomized blocks design with 18 replicates and one plant per plot, during a period of ten years. The following variables were evaluated: average number of fruits, fruit, seed and pulp production (kg/plant) and symptoms of “witches broom” disease. The data were checked for normality followed by analysis of variance. The results highlighted clones 32, 42, 44, 46, 47, 61, 62, 63 and 64, presenting characteristics such as productivity, tolerance to witches’ broom disease and interesting fruit characteristics. The results demonstrate that the technique was effective in the evaluation of cupuassu tree genotypes, since the clones revealed their potential at early stages after establishment in the field. There was a reduction by at least 30% regarding the time needed to evaluate cupuassu tree genotypes. Five clones (32, 42, 46, 61 and 64) already present the potential to be made available to producers, aimed at replacing the canopy of unproductive trees.http://www.scielo.br/pdf/rbf/v42n4/0100-2945-rbf-42-4-e-597.pdfTheobroma grandiflorumgenetic breedingclone selectionover graftingwitch broom |
| spellingShingle | Rafael Moysés Alves Saulo Fabrício da Silva Chaves Raimundo Parente de Oliveira Jack Loureiro Pedroza Neto Alexandre Sebbenn Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará Revista Brasileira de Fruticultura Theobroma grandiflorum genetic breeding clone selection over grafting witch broom |
| title | Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará |
| title_full | Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará |
| title_fullStr | Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará |
| title_full_unstemmed | Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará |
| title_short | Canopy replacement used in the evaluation of cupuassu tree genotypes in the state of Pará |
| title_sort | canopy replacement used in the evaluation of cupuassu tree genotypes in the state of para |
| topic | Theobroma grandiflorum genetic breeding clone selection over grafting witch broom |
| url | http://www.scielo.br/pdf/rbf/v42n4/0100-2945-rbf-42-4-e-597.pdf |
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