Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico
The sour pitaya (also cactus dagger, Stenocereus gummosus) is a widely distributed species along the Baja California peninsula. This species shows the following characteristic features: a) a decumbent growth, which allows vegetative dispersion; b) in spite of producing a relative high proportion of...
| Auteurs principaux: | , |
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| Format: | Online |
| Langue: | spa |
| Publié: |
Instituto de Ecología, A.C.
1991
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| Accès en ligne: | https://abm.ojs.inecol.mx/index.php/abm/article/view/615 |
| _version_ | 1799771155410714624 |
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| author | León de la Luz, José Luis Domínguez Cadena, Raymundo |
| author_facet | León de la Luz, José Luis Domínguez Cadena, Raymundo |
| author_sort | León de la Luz, José Luis |
| collection | ABM |
| description | The sour pitaya (also cactus dagger, Stenocereus gummosus) is a widely distributed species along the Baja California peninsula. This species shows the following characteristic features: a) a decumbent growth, which allows vegetative dispersion; b) in spite of producing a relative high proportion of fruits with viable seeds, propagation pattern seems to be by the asexual way exclusively. The goal of this work is to contribute to the knowledge of seed reproduction potential in this species. Among other results it was found that only 30% of the floral buds become fruits. Germination requires a wash of the arillate cover and a light scarification. Seed ingestion by certain birds increases the efficiency of germination. The energy invested by each plant to flower and to the fruit production must be high, and it can be justified only if we assume that a fraction of the seeds are able to develop mature individuals and maintain the genetic diversity of the population. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-615 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 1991 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-6152023-02-17T02:04:50Z Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico Evaluación de la reproducción por semilla de la pitaya agria (Stenocereus gummosus) en Baja California Sur, México León de la Luz, José Luis Domínguez Cadena, Raymundo The sour pitaya (also cactus dagger, Stenocereus gummosus) is a widely distributed species along the Baja California peninsula. This species shows the following characteristic features: a) a decumbent growth, which allows vegetative dispersion; b) in spite of producing a relative high proportion of fruits with viable seeds, propagation pattern seems to be by the asexual way exclusively. The goal of this work is to contribute to the knowledge of seed reproduction potential in this species. Among other results it was found that only 30% of the floral buds become fruits. Germination requires a wash of the arillate cover and a light scarification. Seed ingestion by certain birds increases the efficiency of germination. The energy invested by each plant to flower and to the fruit production must be high, and it can be justified only if we assume that a fraction of the seeds are able to develop mature individuals and maintain the genetic diversity of the population. La pitaya agria (Stenocereus gummosus), es una especie que presenta una amplia distribución en la península de Baja California y exhibe los siguientes rasgos característicos: a) un tipo de crecimiento decumbente, lo que facilita que eventualmente se generen de manera vegetativa otros individuos; b) no obstante que produce una significativa proporción de frutos con semillas viables, su propagación parece ser exclusivamente vegetativa. El objetivo del presente trabajo es el de indagar en el conocimiento de la potencialidad de la reproducción por semilla de esta especie. Entre otros resultados se encontró que la fase de fruto sólo es alcanzada por 30% de las yemas florales generadas. Para ser facilitada, la germinación presenta la particularidad de que las semillas requieren de lavado de su cubierta arilosa y de escarificación. El paso a través del tracto digestivo de aves consumidoras del fruto parece ser el mejor procedimiento para favorecerla. La inversión energética aportada en la floración y fructificación es sin duda elevada; esto sólo parece justificarse considerando que una fracción de las semillas pude formar, en su oportunidad, adultos maduros y así contribuir a la variabilidad genotípica de la población. Instituto de Ecología, A.C. 1991-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/615 10.21829/abm14.1991.615 Acta Botanica Mexicana; No. 14 (1991); 75-87 Acta Botanica Mexicana; Núm. 14 (1991); 75-87 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/615/781 Derechos de autor 2016 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | León de la Luz, José Luis Domínguez Cadena, Raymundo Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico |
| title | Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico |
| title_full | Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico |
| title_fullStr | Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico |
| title_full_unstemmed | Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico |
| title_short | Evaluation of reproduction by seed of the sour pitaya (Stenocereus gummosus) in Baja California Sur, Mexico |
| title_sort | evaluation of reproduction by seed of the sour pitaya (stenocereus gummosus) in baja california sur, mexico |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/615 |
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