Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species
Hesperozygis ringens (Lamiaceae), popularly known as espanta-pulga, is a threatened species endemic to rocky and sandy regions of the Pampa biome. One factor that can influence the low number of individuals of a species is a low seed germination rate influenced by temperature and/or light. Thus, th...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2022-07-01
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| Series: | Acta Scientiarum: Biological Sciences |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/58431 |
| _version_ | 1811312781075415040 |
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| author | Leandro Gonçalves Leite Raquel Stefanello Liliana Essi |
| author_facet | Leandro Gonçalves Leite Raquel Stefanello Liliana Essi |
| author_sort | Leandro Gonçalves Leite |
| collection | DOAJ |
| description |
Hesperozygis ringens (Lamiaceae), popularly known as espanta-pulga, is a threatened species endemic to rocky and sandy regions of the Pampa biome. One factor that can influence the low number of individuals of a species is a low seed germination rate influenced by temperature and/or light. Thus, the objective of this study was to evaluate the influence of light and temperature on the seed germination of H. ringens. The seeds of two lots were sown on a paper substrate and maintained in BOD chambers at temperatures of 15, 20, 25 and 30ºC in the presence and absence of light. The germination speed rate was evaluated every 3 days for 21 days. The experiment was completely randomized with treatments that had a 4 x 2 factorial design. The first visible sign (protrusion of the primary root) of germination was observed seven days after sowing. Germination occurred both in the presence and absence of light and the lowest temperatures significantly influenced the germination process and germination speed. For germinating the species, 15°C was the most favorable temperature compared to 20, 25 and 30°C. It can be concluded that a temperature of 15ºC favors the germination process of H. ringens seeds, which are insensitive to light.
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| first_indexed | 2024-04-13T10:42:43Z |
| format | Article |
| id | doaj.art-863d17d98b9c42f6ba51a723bda0be80 |
| institution | Directory Open Access Journal |
| issn | 1679-9283 1807-863X |
| language | English |
| last_indexed | 2024-04-13T10:42:43Z |
| publishDate | 2022-07-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj.art-863d17d98b9c42f6ba51a723bda0be802022-12-22T02:49:52ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2022-07-0144110.4025/actascibiolsci.v44i1.58431Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species Leandro Gonçalves Leite0Raquel Stefanello1Liliana Essi2Universidade Federal de Santa MariaUniversidade Federal de Santa MariaUniversidade Federal de Santa Maria Hesperozygis ringens (Lamiaceae), popularly known as espanta-pulga, is a threatened species endemic to rocky and sandy regions of the Pampa biome. One factor that can influence the low number of individuals of a species is a low seed germination rate influenced by temperature and/or light. Thus, the objective of this study was to evaluate the influence of light and temperature on the seed germination of H. ringens. The seeds of two lots were sown on a paper substrate and maintained in BOD chambers at temperatures of 15, 20, 25 and 30ºC in the presence and absence of light. The germination speed rate was evaluated every 3 days for 21 days. The experiment was completely randomized with treatments that had a 4 x 2 factorial design. The first visible sign (protrusion of the primary root) of germination was observed seven days after sowing. Germination occurred both in the presence and absence of light and the lowest temperatures significantly influenced the germination process and germination speed. For germinating the species, 15°C was the most favorable temperature compared to 20, 25 and 30°C. It can be concluded that a temperature of 15ºC favors the germination process of H. ringens seeds, which are insensitive to light. https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/58431Lamiaceae; light; temperature; espanta-pulga. |
| spellingShingle | Leandro Gonçalves Leite Raquel Stefanello Liliana Essi Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species Acta Scientiarum: Biological Sciences Lamiaceae; light; temperature; espanta-pulga. |
| title | Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species |
| title_full | Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species |
| title_fullStr | Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species |
| title_full_unstemmed | Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species |
| title_short | Seed germination of Hesperozygis ringens (Benth.) Epling, an endemic and threatened species |
| title_sort | seed germination of hesperozygis ringens benth epling an endemic and threatened species |
| topic | Lamiaceae; light; temperature; espanta-pulga. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/58431 |
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