Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop
Purslanes are frequently used in Brazil as potted plants and for landscaping because of their beautiful colored flowers. Despite their commercial importance, the genetic diversity within ornamental purslane remains largely unknown. Thus, a complete characterization of ornamental purslane resources...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Eduem (Editora da Universidade Estadual de Maringá)
2023-10-01
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| Series: | Acta Scientiarum: Agronomy |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/62326 |
| _version_ | 1827791960598904832 |
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| author | Jardel da Silva Souza Elizanilda Ramalho do Rêgo Nardiele de Souza Souto Freitas Angela Maria dos Santos Pessoa Priscila Duarte Silva Mailson Monteiro do Rêgo |
| author_facet | Jardel da Silva Souza Elizanilda Ramalho do Rêgo Nardiele de Souza Souto Freitas Angela Maria dos Santos Pessoa Priscila Duarte Silva Mailson Monteiro do Rêgo |
| author_sort | Jardel da Silva Souza |
| collection | DOAJ |
| description |
Purslanes are frequently used in Brazil as potted plants and for landscaping because of their beautiful colored flowers. Despite their commercial importance, the genetic diversity within ornamental purslane remains largely unknown. Thus, a complete characterization of ornamental purslane resources is essential for its utilization since genetic variability is indispensable for the efficient development of new cultivars. This study aimed to evaluate genetic variability and recommend accessions to start a genetic breeding program for purslane (Portulaca umbraticola). Twenty purslane accessions were collected in public places in Areia City and Santa Rita City, Paraiba State, Brazil. The experiment was conducted in a greenhouse. An entirely randomized experimental design with 20 accessions and 5 replicates was utilized. Plants were evaluated for quantitative and qualitative traits. Data were submitted to analysis of variance and grouped by Scott–Knott’s criteria (p ≤ 0.05). The accessions were grouped using Tocher’s method based on the generalized Mahalanobis distance. Principal component analysis was also used to analyze the genetic divergence. There were significant differences (p ≤ 0.05) for all evaluated traits except for internode distance, plant height, and leaf length. The Scott–Knott criteria clustered the accessions into two groups for all traits except days to flowering (five groups). Tocher’s grouping based on Mahalanobis distance allowed the accessions to be separated into eight clusters. The genetic diversity observed in this study was supported by the consonance between the Tocher cluster method and the PC analyses. The traits that most contributed to genetic divergence among accessions were days to flowering (70.37%), flower length (6.10%), leaf width (3.89%), branch number (3.57%), and stem length (3.36%). Considering the criteria for use in outdoor spaces, wider plants with several large colored flowers, thicker stems, greener leaves, and earliness were interesting. Accessions 5, 7, 13, 14, 16, 18, and 20 should be selected as parents for further breeding programs. However, if the objective is to produce potted plants, dwarf plants with bigger leaves are desired, and accession 1 should be selected. This will create greater variability in segregating populations, which will increase the overall quality of ornamental use of this species. For those accessions with no reproductive verticils but with other excellent attributes, for example, high chlorophyll content breeding strategies, such as induced mutations or protoplast fusion, can be used.
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| first_indexed | 2024-03-11T17:55:27Z |
| format | Article |
| id | doaj.art-c6505a961b8843f1a554c069ba354326 |
| institution | Directory Open Access Journal |
| issn | 1679-9275 1807-8621 |
| language | English |
| last_indexed | 2024-03-11T17:55:27Z |
| publishDate | 2023-10-01 |
| publisher | Eduem (Editora da Universidade Estadual de Maringá) |
| record_format | Article |
| series | Acta Scientiarum: Agronomy |
| spelling | doaj.art-c6505a961b8843f1a554c069ba3543262023-10-17T17:52:21ZengEduem (Editora da Universidade Estadual de Maringá)Acta Scientiarum: Agronomy1679-92751807-86212023-10-0146110.4025/actasciagron.v46i1.62326Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop Jardel da Silva Souza0Elizanilda Ramalho do Rêgo1Nardiele de Souza Souto Freitas2Angela Maria dos Santos Pessoa3Priscila Duarte Silva 4Mailson Monteiro do Rêgo5Universidade Estadual PaulistaUniversidade Federal da ParaíbaUniversidade Federal Rural de PernambucoUniversidade Federal Rural do SemiáridoUniversidade Federal da ParaíbaUniversidade Federal da Paraíba Purslanes are frequently used in Brazil as potted plants and for landscaping because of their beautiful colored flowers. Despite their commercial importance, the genetic diversity within ornamental purslane remains largely unknown. Thus, a complete characterization of ornamental purslane resources is essential for its utilization since genetic variability is indispensable for the efficient development of new cultivars. This study aimed to evaluate genetic variability and recommend accessions to start a genetic breeding program for purslane (Portulaca umbraticola). Twenty purslane accessions were collected in public places in Areia City and Santa Rita City, Paraiba State, Brazil. The experiment was conducted in a greenhouse. An entirely randomized experimental design with 20 accessions and 5 replicates was utilized. Plants were evaluated for quantitative and qualitative traits. Data were submitted to analysis of variance and grouped by Scott–Knott’s criteria (p ≤ 0.05). The accessions were grouped using Tocher’s method based on the generalized Mahalanobis distance. Principal component analysis was also used to analyze the genetic divergence. There were significant differences (p ≤ 0.05) for all evaluated traits except for internode distance, plant height, and leaf length. The Scott–Knott criteria clustered the accessions into two groups for all traits except days to flowering (five groups). Tocher’s grouping based on Mahalanobis distance allowed the accessions to be separated into eight clusters. The genetic diversity observed in this study was supported by the consonance between the Tocher cluster method and the PC analyses. The traits that most contributed to genetic divergence among accessions were days to flowering (70.37%), flower length (6.10%), leaf width (3.89%), branch number (3.57%), and stem length (3.36%). Considering the criteria for use in outdoor spaces, wider plants with several large colored flowers, thicker stems, greener leaves, and earliness were interesting. Accessions 5, 7, 13, 14, 16, 18, and 20 should be selected as parents for further breeding programs. However, if the objective is to produce potted plants, dwarf plants with bigger leaves are desired, and accession 1 should be selected. This will create greater variability in segregating populations, which will increase the overall quality of ornamental use of this species. For those accessions with no reproductive verticils but with other excellent attributes, for example, high chlorophyll content breeding strategies, such as induced mutations or protoplast fusion, can be used. https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/62326breeding; ornamental plant; neglected plants; underutilized food plants; moss rose purslane; genetic variability; morphological traits. |
| spellingShingle | Jardel da Silva Souza Elizanilda Ramalho do Rêgo Nardiele de Souza Souto Freitas Angela Maria dos Santos Pessoa Priscila Duarte Silva Mailson Monteiro do Rêgo Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop Acta Scientiarum: Agronomy breeding; ornamental plant; neglected plants; underutilized food plants; moss rose purslane; genetic variability; morphological traits. |
| title | Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop |
| title_full | Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop |
| title_fullStr | Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop |
| title_full_unstemmed | Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop |
| title_short | Phenotypical characterization of Portulaca umbraticola: A non-conventional edible ornamental crop |
| title_sort | phenotypical characterization of portulaca umbraticola a non conventional edible ornamental crop |
| topic | breeding; ornamental plant; neglected plants; underutilized food plants; moss rose purslane; genetic variability; morphological traits. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/62326 |
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