Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae)
The temperature range of germination of seeds of Muntingia calabura L. was 15-35° C and the optimum temperature at 35° C where more seeds germinated at short period. The fluence response curves demonstrated the involvement of phytochrome in the control of germination through the low fluence response...
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| Format: | Article |
| Language: | English |
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Instituto de Tecnologia do Paraná (Tecpar)
2001-09-01
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| Series: | Brazilian Archives of Biology and Technology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300012 |
| _version_ | 1819029148476112896 |
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| author | Idalina T. de A. Leite Massanori Takaki |
| author_facet | Idalina T. de A. Leite Massanori Takaki |
| author_sort | Idalina T. de A. Leite |
| collection | DOAJ |
| description | The temperature range of germination of seeds of Muntingia calabura L. was 15-35° C and the optimum temperature at 35° C where more seeds germinated at short period. The fluence response curves demonstrated the involvement of phytochrome in the control of germination through the low fluence response. The effect of photoperiod showed that the species need long daily exposures to white light and that shade light inhibited completely seed germination, confirming as pioneer species that colonized only large gaps in the forest.<br>As sementes de Muntingia calabura L. germinam nas temperaturas de 15 a 35C sendo a temperatura ótima de 35C onde maior número de sementes germinam em menor período. A curva de fluência-resposta demonstra que o fitocromo controla a germinação de sementes através da resposta de fluência baixa. A resposta da semente ao fotoperíodo e à completa inibição pela luz de sombreamento indicam que a espécies coloniza somente clareiras grandes de florestas, confirmando a espécie como pioneira. |
| first_indexed | 2024-12-21T06:09:39Z |
| format | Article |
| id | doaj.art-d6f4079de8264f6294db338255049494 |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-12-21T06:09:39Z |
| publishDate | 2001-09-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-d6f4079de8264f6294db3382550494942022-12-21T19:13:33ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242001-09-0144329730210.1590/S1516-89132001000300012Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae)Idalina T. de A. LeiteMassanori TakakiThe temperature range of germination of seeds of Muntingia calabura L. was 15-35° C and the optimum temperature at 35° C where more seeds germinated at short period. The fluence response curves demonstrated the involvement of phytochrome in the control of germination through the low fluence response. The effect of photoperiod showed that the species need long daily exposures to white light and that shade light inhibited completely seed germination, confirming as pioneer species that colonized only large gaps in the forest.<br>As sementes de Muntingia calabura L. germinam nas temperaturas de 15 a 35C sendo a temperatura ótima de 35C onde maior número de sementes germinam em menor período. A curva de fluência-resposta demonstra que o fitocromo controla a germinação de sementes através da resposta de fluência baixa. A resposta da semente ao fotoperíodo e à completa inibição pela luz de sombreamento indicam que a espécies coloniza somente clareiras grandes de florestas, confirmando a espécie como pioneira.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300012Seed germinationphytochromelighttemperatureMuntingia calabura |
| spellingShingle | Idalina T. de A. Leite Massanori Takaki Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae) Brazilian Archives of Biology and Technology Seed germination phytochrome light temperature Muntingia calabura |
| title | Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae) |
| title_full | Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae) |
| title_fullStr | Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae) |
| title_full_unstemmed | Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae) |
| title_short | Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae) |
| title_sort | phytochrome and temperature control of seed germination in muntingia calabura l elaeocarpaceae |
| topic | Seed germination phytochrome light temperature Muntingia calabura |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300012 |
| work_keys_str_mv | AT idalinatdealeite phytochromeandtemperaturecontrolofseedgerminationinmuntingiacalaburalelaeocarpaceae AT massanoritakaki phytochromeandtemperaturecontrolofseedgerminationinmuntingiacalaburalelaeocarpaceae |