Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400013 |
Resumo: | The phenotypic diversity of sweet potato (Ipomoea batatas) landraces was assessed using morphological traits, verifying how this diversity is distributed among the households and settlements of the Vale do Ribeira, Brazil. A total of 74 accessions, involving 53 landraces, collected from 30 households distributed among 18 settlements that practice traditional agriculture in the municipalities of Iguape, Ilha Comprida, and Cananeia, as well as four commercial varieties acquired in markets of Iguape and Piracicaba, were evaluated under an ex situ experimental condition in Piracicaba, SP, Brazil. Nine phenological and floral descriptors, nine morphological vegetative aerial descriptors and five storage root traits were recorded. The 14 aerial vegetative and root descriptors were evaluated as binary data, totaling 74 attributes. Cluster analyses were made using the Jaccard similarity index and the UPGMA (unweighted pair group method with arithmetic mean) agglomerative method. Binary data was also submitted to a variance analysis (AMOVA). No defined groups were observed, indicating that the diversity of the landraces is not structured in space, but considerable morphological variation was found in this area (Jaccard similarity index varying from 0.12 to 1.0). Most of the variability occurred within households (64.4%), followed by the distribution among households within settlements (27.1%) and among settlements (8.4%). Thus, the traditional agriculturists of Vale do Ribeira maintain a high morphological diversity for sweet potato within their households, which can be assumed to be produced by the outcrossing mating system of this species and somatic mutation events, as well as the exchange system at local and regional levels. |
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Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeiralocal varietiesmorphologyphenotypic diversitytraditional agriculturevariabilityThe phenotypic diversity of sweet potato (Ipomoea batatas) landraces was assessed using morphological traits, verifying how this diversity is distributed among the households and settlements of the Vale do Ribeira, Brazil. A total of 74 accessions, involving 53 landraces, collected from 30 households distributed among 18 settlements that practice traditional agriculture in the municipalities of Iguape, Ilha Comprida, and Cananeia, as well as four commercial varieties acquired in markets of Iguape and Piracicaba, were evaluated under an ex situ experimental condition in Piracicaba, SP, Brazil. Nine phenological and floral descriptors, nine morphological vegetative aerial descriptors and five storage root traits were recorded. The 14 aerial vegetative and root descriptors were evaluated as binary data, totaling 74 attributes. Cluster analyses were made using the Jaccard similarity index and the UPGMA (unweighted pair group method with arithmetic mean) agglomerative method. Binary data was also submitted to a variance analysis (AMOVA). No defined groups were observed, indicating that the diversity of the landraces is not structured in space, but considerable morphological variation was found in this area (Jaccard similarity index varying from 0.12 to 1.0). Most of the variability occurred within households (64.4%), followed by the distribution among households within settlements (27.1%) and among settlements (8.4%). Thus, the traditional agriculturists of Vale do Ribeira maintain a high morphological diversity for sweet potato within their households, which can be assumed to be produced by the outcrossing mating system of this species and somatic mutation events, as well as the exchange system at local and regional levels.Escola Superior de Agricultura "Luiz de Queiroz"2007-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400013Scientia Agricola v.64 n.4 2007reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162007000400013info:eu-repo/semantics/openAccessVeasey,Elizabeth AnnSilva,Jurema Rosa de QueirozRosa,Mariana SilvaBorges,AlineBressan,Eduardo de AndradePeroni,Nivaldoeng2007-07-31T00:00:00Zoai:scielo:S0103-90162007000400013Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2007-07-31T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
title |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
spellingShingle |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira Veasey,Elizabeth Ann local varieties morphology phenotypic diversity traditional agriculture variability |
title_short |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
title_full |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
title_fullStr |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
title_full_unstemmed |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
title_sort |
Phenology and morphological diversity of sweet potato (Ipomoea batatas) landraces of the Vale do Ribeira |
author |
Veasey,Elizabeth Ann |
author_facet |
Veasey,Elizabeth Ann Silva,Jurema Rosa de Queiroz Rosa,Mariana Silva Borges,Aline Bressan,Eduardo de Andrade Peroni,Nivaldo |
author_role |
author |
author2 |
Silva,Jurema Rosa de Queiroz Rosa,Mariana Silva Borges,Aline Bressan,Eduardo de Andrade Peroni,Nivaldo |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Veasey,Elizabeth Ann Silva,Jurema Rosa de Queiroz Rosa,Mariana Silva Borges,Aline Bressan,Eduardo de Andrade Peroni,Nivaldo |
dc.subject.por.fl_str_mv |
local varieties morphology phenotypic diversity traditional agriculture variability |
topic |
local varieties morphology phenotypic diversity traditional agriculture variability |
description |
The phenotypic diversity of sweet potato (Ipomoea batatas) landraces was assessed using morphological traits, verifying how this diversity is distributed among the households and settlements of the Vale do Ribeira, Brazil. A total of 74 accessions, involving 53 landraces, collected from 30 households distributed among 18 settlements that practice traditional agriculture in the municipalities of Iguape, Ilha Comprida, and Cananeia, as well as four commercial varieties acquired in markets of Iguape and Piracicaba, were evaluated under an ex situ experimental condition in Piracicaba, SP, Brazil. Nine phenological and floral descriptors, nine morphological vegetative aerial descriptors and five storage root traits were recorded. The 14 aerial vegetative and root descriptors were evaluated as binary data, totaling 74 attributes. Cluster analyses were made using the Jaccard similarity index and the UPGMA (unweighted pair group method with arithmetic mean) agglomerative method. Binary data was also submitted to a variance analysis (AMOVA). No defined groups were observed, indicating that the diversity of the landraces is not structured in space, but considerable morphological variation was found in this area (Jaccard similarity index varying from 0.12 to 1.0). Most of the variability occurred within households (64.4%), followed by the distribution among households within settlements (27.1%) and among settlements (8.4%). Thus, the traditional agriculturists of Vale do Ribeira maintain a high morphological diversity for sweet potato within their households, which can be assumed to be produced by the outcrossing mating system of this species and somatic mutation events, as well as the exchange system at local and regional levels. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400013 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162007000400013 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.64 n.4 2007 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936460580421632 |