Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon
Abstract: The objective of this work was to select an optimal set of morphological descriptors, in order to characterize the phenotipical diversity of Amerindian yam (Dioscorea trifida) landraces cultivated in the municipality of Caapiranga, in the central Amazon region of Brazil, and to develop a b...
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| Format: | Article |
| Language: | English |
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Embrapa Informação Tecnológica
2018-04-01
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| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400405&tlng=en |
| _version_ | 1819005845301624832 |
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| author | Patrick Beyerlein Henrique dos Santos Pereira |
| author_facet | Patrick Beyerlein Henrique dos Santos Pereira |
| author_sort | Patrick Beyerlein |
| collection | DOAJ |
| description | Abstract: The objective of this work was to select an optimal set of morphological descriptors, in order to characterize the phenotipical diversity of Amerindian yam (Dioscorea trifida) landraces cultivated in the municipality of Caapiranga, in the central Amazon region of Brazil, and to develop a botanical identification key for them. A collection of 140 accessions and an experimental plot with a representative sample of 20 landraces were used to test 64 morphological descriptors for the aerial and subterranean plant parts. Forty-eight descriptors were selected, of which 13 were for tubers, 12 for stems, 14 for leaves, and 9 for inflorescences and seed. A cluster analysis based on the morphological data showed the formation of two landrace groups with greater similarity: white and purple pulp tubers. The results provide tools for in situ and ex situ conservation and for plant breeding programs, considering the importance of maintaining and recognizing the value of Ameridian yam as an important native genetic resource for food security in the region. |
| first_indexed | 2024-12-20T23:59:16Z |
| format | Article |
| id | doaj.art-82c283e7ab2143069a8f77597d1999e3 |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-12-20T23:59:16Z |
| publishDate | 2018-04-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-82c283e7ab2143069a8f77597d1999e32022-12-21T19:22:40ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39212018-04-0153440541810.1590/s0100-204x2018000400002Morphological diversity and identification key for landraces of the Amerindian yam in central AmazonPatrick BeyerleinHenrique dos Santos PereiraAbstract: The objective of this work was to select an optimal set of morphological descriptors, in order to characterize the phenotipical diversity of Amerindian yam (Dioscorea trifida) landraces cultivated in the municipality of Caapiranga, in the central Amazon region of Brazil, and to develop a botanical identification key for them. A collection of 140 accessions and an experimental plot with a representative sample of 20 landraces were used to test 64 morphological descriptors for the aerial and subterranean plant parts. Forty-eight descriptors were selected, of which 13 were for tubers, 12 for stems, 14 for leaves, and 9 for inflorescences and seed. A cluster analysis based on the morphological data showed the formation of two landrace groups with greater similarity: white and purple pulp tubers. The results provide tools for in situ and ex situ conservation and for plant breeding programs, considering the importance of maintaining and recognizing the value of Ameridian yam as an important native genetic resource for food security in the region.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400405&tlng=enDioscorea trifidaagrobiodiversityDioscoraceaegenetic resourcesnative food plantphenotypic similarity |
| spellingShingle | Patrick Beyerlein Henrique dos Santos Pereira Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon Pesquisa Agropecuária Brasileira Dioscorea trifida agrobiodiversity Dioscoraceae genetic resources native food plant phenotypic similarity |
| title | Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon |
| title_full | Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon |
| title_fullStr | Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon |
| title_full_unstemmed | Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon |
| title_short | Morphological diversity and identification key for landraces of the Amerindian yam in central Amazon |
| title_sort | morphological diversity and identification key for landraces of the amerindian yam in central amazon |
| topic | Dioscorea trifida agrobiodiversity Dioscoraceae genetic resources native food plant phenotypic similarity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400405&tlng=en |
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