The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil
Melocactus violaceus is an endangered species due to habitat destruction and the overcollection of this species for ornamental use. The aim of this study was to test the effect of different temperatures on the germination of M. violaceus. Three treatments were conducted: a constant temperature of 25...
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| Format: | Article |
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Academia Brasileira de Ciências
2013-06-01
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| Series: | Anais da Academia Brasileira de Ciências |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200615&lng=en&tlng=en |
| _version_ | 1818581072514908160 |
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| author | LUIZ R. ZAMITH DENISE D. CRUZ BARBARA T.T. RICHERS |
| author_facet | LUIZ R. ZAMITH DENISE D. CRUZ BARBARA T.T. RICHERS |
| author_sort | LUIZ R. ZAMITH |
| collection | DOAJ |
| description | Melocactus violaceus is an endangered species due to habitat destruction and the overcollection of this species for ornamental use. The aim of this study was to test the effect of different temperatures on the germination of M. violaceus. Three treatments were conducted: a constant temperature of 25ºC, a 20-35ºC alternating temperature, both inside germination chamber, and an alternating temperature under room temperature (mean temperature ranged from 25-37ºC). The final seed germination rates at the alternating temperature treatments were not significantly different (65% in the seed germinator and 62.5% at room condition). However, both treatments with alternating temperatures had significantly higher germination rates compared to the treatment kept at the constant temperature (8%). Our study showed that alternating temperatures between 20 and 37ºC provides satisfactory conditions to induce a high percentage of seed germination of M. violaceus, without the passage of seeds through the digestive tract of its natural disperser, the lizard Tropidurus torquatus. This condition contributes to efficiently producing seedlings that can be reintroduced into conservation areas or used as ornamentals that may help reduce the overcollection of the remaining native populations. |
| first_indexed | 2024-12-16T07:27:41Z |
| format | Article |
| id | doaj.art-102e6ee468ab474592e8e5eed75f5fa2 |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-12-16T07:27:41Z |
| publishDate | 2013-06-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-102e6ee468ab474592e8e5eed75f5fa22022-12-21T22:39:28ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902013-06-0185261562210.1590/S0001-37652013000200010S0001-37652013000200615The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of BrazilLUIZ R. ZAMITHDENISE D. CRUZBARBARA T.T. RICHERSMelocactus violaceus is an endangered species due to habitat destruction and the overcollection of this species for ornamental use. The aim of this study was to test the effect of different temperatures on the germination of M. violaceus. Three treatments were conducted: a constant temperature of 25ºC, a 20-35ºC alternating temperature, both inside germination chamber, and an alternating temperature under room temperature (mean temperature ranged from 25-37ºC). The final seed germination rates at the alternating temperature treatments were not significantly different (65% in the seed germinator and 62.5% at room condition). However, both treatments with alternating temperatures had significantly higher germination rates compared to the treatment kept at the constant temperature (8%). Our study showed that alternating temperatures between 20 and 37ºC provides satisfactory conditions to induce a high percentage of seed germination of M. violaceus, without the passage of seeds through the digestive tract of its natural disperser, the lizard Tropidurus torquatus. This condition contributes to efficiently producing seedlings that can be reintroduced into conservation areas or used as ornamentals that may help reduce the overcollection of the remaining native populations.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200615&lng=en&tlng=enCactaceaeconservacaogerminacaoMelocactus violaceusrestingatemperatura |
| spellingShingle | LUIZ R. ZAMITH DENISE D. CRUZ BARBARA T.T. RICHERS The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil Anais da Academia Brasileira de Ciências Cactaceae conservacao germinacao Melocactus violaceus restinga temperatura |
| title | The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil |
| title_full | The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil |
| title_fullStr | The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil |
| title_full_unstemmed | The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil |
| title_short | The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil |
| title_sort | effect of temperature on the germination of melocactus violaceus pfeiff cactaceae a threatened species in restinga sandy coastal plain of brazil |
| topic | Cactaceae conservacao germinacao Melocactus violaceus restinga temperatura |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200615&lng=en&tlng=en |
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