Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae
Background and Aims: Environmental factors can interact with plant life history to determinate the reproductive strategies of adult plants and seedling recruitment. We expect that widely distributed tree species produce heavier seed and with greater variation in seed size than shrubs of restricted g...
| Hlavní autoři: | , , , , , , , , , |
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| Médium: | Online |
| Jazyk: | eng |
| Vydáno: |
Instituto de Ecología, A.C.
2020
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| On-line přístup: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1638 |
| _version_ | 1799771372077973504 |
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| author | Fagundes, Marcilio Cuevas-Reyes, Pablo Araujo, Walter S. Faria, Mauricio L. Valerio, Henrique M. Pimenta, Marcio A. Falcão, Luis A.D. Reis-Junior, Ronaldo Aguilar-Peralta, Joan Sebastian dos Santos, Henrique Tadeu |
| author_facet | Fagundes, Marcilio Cuevas-Reyes, Pablo Araujo, Walter S. Faria, Mauricio L. Valerio, Henrique M. Pimenta, Marcio A. Falcão, Luis A.D. Reis-Junior, Ronaldo Aguilar-Peralta, Joan Sebastian dos Santos, Henrique Tadeu |
| author_sort | Fagundes, Marcilio |
| collection | ABM |
| description | Background and Aims: Environmental factors can interact with plant life history to determinate the reproductive strategies of adult plants and seedling recruitment. We expect that widely distributed tree species produce heavier seed and with greater variation in seed size than shrubs of restricted geographic distribution. We also predict that widely distributed tree species should be capable to germinate and develop under variable range of light conditions, while sun-adapted shrubs should germinate and develop better under high light intensity. We used as models two congeneric species of Fabaceae. Copaifera langsdorffii is a widely distributed arboreal species and C. oblongifolia is a shrub with restricted distribution. Methods: Seeds were collected from two plant species in a Cerrado vegetation area, northern Minas Gerais, Brazil. The effects of light available on seed germination and seedling development was conducted in a germination chamber with controlled photoperiod, temperature and light intensity.Key results: The widely distributed tree (C. langsdorffii) had greater seed mass than the shrub (C. oblongifolia). Seeds of C. langsdorffii germinated faster under available high light, while the shrub C. oblongifolia seeds required less time to germinate under available low light and darkness. Under high light intensity, germination percentage of C. langsdorffii and C. oblongifolia seeds did not vary. However, seeds of the shrub showed a higher germination percentage under low light intensity and darkness. In general, seed mass showed a negative relationship with germination percentage, but this relationship varied in function of species and the availability of light. Copaifera langsdorffii seedlings had larger shoots and roots than C. oblongifolia. In contrast, the root:shoot ratio was higher in shrub than in tree species.Conclusions: Our results have important implications for understanding the patterns of distribution of two Copaifera species and explain the ability of C. oblongifolia to colonize disturbed areas. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1638 |
| institution | Acta Botanica Mexicana |
| language | eng |
| publishDate | 2020 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-16382022-11-17T21:17:28Z Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae Influencia de la disponibilidad de luz y la masa de semillas sobre la germinabilidad y el crecimiento inicial de dos especies congénitas de Fabaceae Fagundes, Marcilio Cuevas-Reyes, Pablo Araujo, Walter S. Faria, Mauricio L. Valerio, Henrique M. Pimenta, Marcio A. Falcão, Luis A.D. Reis-Junior, Ronaldo Aguilar-Peralta, Joan Sebastian dos Santos, Henrique Tadeu Copaifera habitat invasion plant recruitment plant species distribution regeneration niche hypothesis. Copaifera distribución de especies de plantas hipótesis del nicho de regeneración invasión de hábitat reclutamiento de plantas Background and Aims: Environmental factors can interact with plant life history to determinate the reproductive strategies of adult plants and seedling recruitment. We expect that widely distributed tree species produce heavier seed and with greater variation in seed size than shrubs of restricted geographic distribution. We also predict that widely distributed tree species should be capable to germinate and develop under variable range of light conditions, while sun-adapted shrubs should germinate and develop better under high light intensity. We used as models two congeneric species of Fabaceae. Copaifera langsdorffii is a widely distributed arboreal species and C. oblongifolia is a shrub with restricted distribution. Methods: Seeds were collected from two plant species in a Cerrado vegetation area, northern Minas Gerais, Brazil. The effects of light available on seed germination and seedling development was conducted in a germination chamber with controlled photoperiod, temperature and light intensity.Key results: The widely distributed tree (C. langsdorffii) had greater seed mass than the shrub (C. oblongifolia). Seeds of C. langsdorffii germinated faster under available high light, while the shrub C. oblongifolia seeds required less time to germinate under available low light and darkness. Under high light intensity, germination percentage of C. langsdorffii and C. oblongifolia seeds did not vary. However, seeds of the shrub showed a higher germination percentage under low light intensity and darkness. In general, seed mass showed a negative relationship with germination percentage, but this relationship varied in function of species and the availability of light. Copaifera langsdorffii seedlings had larger shoots and roots than C. oblongifolia. In contrast, the root:shoot ratio was higher in shrub than in tree species.Conclusions: Our results have important implications for understanding the patterns of distribution of two Copaifera species and explain the ability of C. oblongifolia to colonize disturbed areas. Antecedentes y Objetivos: Los factores ambientales pueden interactuar con la historia de vida de las plantas determinando las estrategias reproductivas de individuos adultos y el reclutamiento de plántulas. Predecimos que las especies de árboles ampliamente distribuidas producen semillas más pesadas y con una mayor variación en el tamaño de las semillas que los arbustos de distribución geográfica restringida. Esperamos que las especies arbóreas ampliamente distribuidas deberían ser capaces de germinar y desarrollarse bajo un rango variable de condiciones de luz, mientras que los arbustos adaptados a condiciones de sol deberían germinar y desarrollarse mejor con una alta intensidad de luz. Usamos como modelo dos especies congenéricas de Fabaceae. Copaifera langsdorffii es una especie arbórea ampliamente distribuida y C. oblongifolia es un arbusto de distribución geográfica restringida.Métodos: Se colectaron semillas de estas especies de plantas en un área de vegetación de Cerrado, al norte del estado de Minas Gerais, Brasil. Los efectos de la disponibilidad de luz sobre la germinación de semillas y el desarrollo de plántulas se realizaron en una cámara de germinación con fotoperíodo controlado, temperatura e intensidad de luz.Resultados clave: El árbol de amplia distribución (C. langsdorffii) tuvo mayor masa de semillas que el arbusto (C. oblongifolia). Las semillas de C. langsdorffii germinaron más rápido bajo alta disponibilidad de luz, mientras que las semillas de C. oblongifolia requirieron menos tiempo para germinar bajo poca luz disponible y oscuridad. En alta intensidad de luz, las semillas de C. langsdorffii y de C. oblongifolia tuvieron similares porcentajes, mientras que las semillas de C. oblongifolia mostraron una mayor germinación en baja intensidad de luz y oscuridad. La masa de semillas mostró una relación negativa con el porcentaje de germinación, pero esta relación varió en función de las especies y de la disponibilidad de luz. Las plántulas de C. langsdorffii tuvieron mayor desarrollo de brotes y raíces que C. oblongifolia. En contraste, la relación raíz:brote fue mayor en arbustos que en árboles.Conclusiones: Nuestros resultados tienen implicaciones importantes para comprender los patrones de distribución de dos especies de Copaifera y poder explicar la capacidad de C. oblongifolia para colonizar áreas perturbadas. Instituto de Ecología, A.C. 2020-06-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares text/xml application/pdf application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/1638 10.21829/abm127.2020.1638 Acta Botanica Mexicana; No. 127 (2020) Acta Botanica Mexicana; Núm. 127 (2020) 2448-7589 0187-7151 eng https://abm.ojs.inecol.mx/index.php/abm/article/view/1638/3665 https://abm.ojs.inecol.mx/index.php/abm/article/view/1638/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/1638/epub Derechos de autor 2020 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Fagundes, Marcilio Cuevas-Reyes, Pablo Araujo, Walter S. Faria, Mauricio L. Valerio, Henrique M. Pimenta, Marcio A. Falcão, Luis A.D. Reis-Junior, Ronaldo Aguilar-Peralta, Joan Sebastian dos Santos, Henrique Tadeu Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae |
| title | Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae |
| title_full | Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae |
| title_fullStr | Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae |
| title_full_unstemmed | Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae |
| title_short | Influence of light availability and seed mass on germinability and initial growth of two congeneric species of Fabaceae |
| title_sort | influence of light availability and seed mass on germinability and initial growth of two congeneric species of fabaceae |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1638 |
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