Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata)
Seed conservation of banana crop wild relatives (Musa L. spp.) is limited because of lack of knowledge about their germination ecology. Musa acuminata Colla, the most important banana crop wild relative, is distributed in tropical and subtropical Asian and Pacific rainforests and colonizes disturbed...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/111224 |
| _version_ | 1855539908392779776 |
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| author | Kallo, Simon Davies, Rachel Panis, Bartholomeus Janssens, Steven B. Vandelook, Filip Mertens, Arne Swennen, Rony L. Tahir, Maimun Binti Dickie, John |
| author_browse | Davies, Rachel Dickie, John Janssens, Steven B. Kallo, Simon Mertens, Arne Panis, Bartholomeus Swennen, Rony L. Tahir, Maimun Binti Vandelook, Filip |
| author_facet | Kallo, Simon Davies, Rachel Panis, Bartholomeus Janssens, Steven B. Vandelook, Filip Mertens, Arne Swennen, Rony L. Tahir, Maimun Binti Dickie, John |
| author_sort | Kallo, Simon |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Seed conservation of banana crop wild relatives (Musa L. spp.) is limited because of lack of knowledge about their germination ecology. Musa acuminata Colla, the most important banana crop wild relative, is distributed in tropical and subtropical Asian and Pacific rainforests and colonizes disturbed sites. The role of temperature in stimulating/inhibiting germination to detect disturbance when canopy gaps are formed is not well known. We assessed seed germination thermal requirements of three subspecies of M. acuminata using nine seed accessions which had been stored in the Millennium Seed Bank. Diurnally alternating temperature cycles were almost completely essential for germination compared with constant temperatures. Germination was optimal when the upper temperature of a diurnal cycle was at 35°C; the lower temperature of the cycle was less important. Subspecies occurrence coordinates were used to extract climate temperature data which were then compared against the temperature requirements for germination from our experiment results. Maximum temperatures of the warmest month across subspecies ranges were close to but below optimal germination temperatures, as were diurnal ranges, suggesting soil-warming at the micro-climate level following gap creation is important for M. acuminata seed germination. Additionally, pre-treatment for 3 months at 60% relative humidity at constant 25°C improved germination from 14 ± 10 (mean, standard deviation) to 41 ± 29% suggesting a period in the soil seed bank under the canopy may increase sensitivity to alternating temperature cycles. Overall viability was low (49 ± 28%), and considerable variance was caused by the different accessions. Germination remained somewhat inconsistent. |
| format | Journal Article |
| id | CGSpace111224 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1112242025-11-11T19:06:28Z Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) Kallo, Simon Davies, Rachel Panis, Bartholomeus Janssens, Steven B. Vandelook, Filip Mertens, Arne Swennen, Rony L. Tahir, Maimun Binti Dickie, John temperature anomalies crop wild relatives seed germination temperatura especies silvestres afín a las plantas cultivadas germinación de las semillas Seed conservation of banana crop wild relatives (Musa L. spp.) is limited because of lack of knowledge about their germination ecology. Musa acuminata Colla, the most important banana crop wild relative, is distributed in tropical and subtropical Asian and Pacific rainforests and colonizes disturbed sites. The role of temperature in stimulating/inhibiting germination to detect disturbance when canopy gaps are formed is not well known. We assessed seed germination thermal requirements of three subspecies of M. acuminata using nine seed accessions which had been stored in the Millennium Seed Bank. Diurnally alternating temperature cycles were almost completely essential for germination compared with constant temperatures. Germination was optimal when the upper temperature of a diurnal cycle was at 35°C; the lower temperature of the cycle was less important. Subspecies occurrence coordinates were used to extract climate temperature data which were then compared against the temperature requirements for germination from our experiment results. Maximum temperatures of the warmest month across subspecies ranges were close to but below optimal germination temperatures, as were diurnal ranges, suggesting soil-warming at the micro-climate level following gap creation is important for M. acuminata seed germination. Additionally, pre-treatment for 3 months at 60% relative humidity at constant 25°C improved germination from 14 ± 10 (mean, standard deviation) to 41 ± 29% suggesting a period in the soil seed bank under the canopy may increase sensitivity to alternating temperature cycles. Overall viability was low (49 ± 28%), and considerable variance was caused by the different accessions. Germination remained somewhat inconsistent. 2020-12 2021-02-09T16:23:58Z 2021-02-09T16:23:58Z Journal Article https://hdl.handle.net/10568/111224 en Open Access application/pdf Cambridge University Press Kallo, S.; Davies, R.; Panis, B.; Janssens, S.B.; Vandelook, F.; Mertens, A.; Swennen, R.; Tahir, M.B.; Dickie, J. (2021) Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata). Seed Science Research 30 p. 238–248 ISSN: 0960-2585 |
| spellingShingle | temperature anomalies crop wild relatives seed germination temperatura especies silvestres afín a las plantas cultivadas germinación de las semillas Kallo, Simon Davies, Rachel Panis, Bartholomeus Janssens, Steven B. Vandelook, Filip Mertens, Arne Swennen, Rony L. Tahir, Maimun Binti Dickie, John Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) |
| title | Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) |
| title_full | Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) |
| title_fullStr | Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) |
| title_full_unstemmed | Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) |
| title_short | Regulation of seed germination by diurnally alternating temperatures in disturbance-adapted banana crop wild relatives (Musa acuminata) |
| title_sort | regulation of seed germination by diurnally alternating temperatures in disturbance adapted banana crop wild relatives musa acuminata |
| topic | temperature anomalies crop wild relatives seed germination temperatura especies silvestres afín a las plantas cultivadas germinación de las semillas |
| url | https://hdl.handle.net/10568/111224 |
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