Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress
Resilience of rice cropping systems to potential global climate change will partly depend on the temperature tolerance of pollen germination (PG) and tube growth (PTG). Pollen germination of high temperature‐susceptible Oryza glaberrima Steud. (cv. CG14) and Oryza sativa L. ssp. indica (cv. IR64) an...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/165423 |
| _version_ | 1855536062900731904 |
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| author | Coast, Onoriode Murdoch, Alistair J. Ellis, Richard H. Hay, Fiona R. Jagadish, Krishna S.V. |
| author_browse | Coast, Onoriode Ellis, Richard H. Hay, Fiona R. Jagadish, Krishna S.V. Murdoch, Alistair J. |
| author_facet | Coast, Onoriode Murdoch, Alistair J. Ellis, Richard H. Hay, Fiona R. Jagadish, Krishna S.V. |
| author_sort | Coast, Onoriode |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Resilience of rice cropping systems to potential global climate change will partly depend on the temperature tolerance of pollen germination (PG) and tube growth (PTG). Pollen germination of high temperature‐susceptible Oryza glaberrima Steud. (cv. CG14) and Oryza sativa L. ssp. indica (cv. IR64) and high temperature‐tolerant O. sativa ssp. aus (cv. N22), was assessed on a 5.6–45.4 °C temperature gradient system. Mean maximum PG was 85% at 27 °C with 1488 μm PTG at 25 °C. The hypothesis that in each pollen grain, the minimum temperature requirements (Tn) and maximum temperature limits (Tx) for germination operate independently was accepted by comparing multiplicative and subtractive probability models. The maximum temperature limit for PG in 50% of grains (Tx(50)) was the lowest (29.8 °C) in IR64 compared with CG14 (34.3 °C) and N22 (35.6 °C). Standard deviation (sx) of Tx was also low in IR64 (2.3 °C) suggesting that the mechanism of IR64's susceptibility to high temperatures may relate to PG. Optimum germination temperatures and thermal times for 1 mm PTG were not linked to tolerating high temperatures at anthesis. However, the parameters Tx(50) and sx in the germination model define new pragmatic criteria for successful and resilient PG, preferable to the more traditional cardinal (maximum and minimum) temperatures. |
| format | Journal Article |
| id | CGSpace165423 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1654232025-01-24T14:20:23Z Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress Coast, Onoriode Murdoch, Alistair J. Ellis, Richard H. Hay, Fiona R. Jagadish, Krishna S.V. climatic change climatic factors germination oryza glaberrima pollen temperature Resilience of rice cropping systems to potential global climate change will partly depend on the temperature tolerance of pollen germination (PG) and tube growth (PTG). Pollen germination of high temperature‐susceptible Oryza glaberrima Steud. (cv. CG14) and Oryza sativa L. ssp. indica (cv. IR64) and high temperature‐tolerant O. sativa ssp. aus (cv. N22), was assessed on a 5.6–45.4 °C temperature gradient system. Mean maximum PG was 85% at 27 °C with 1488 μm PTG at 25 °C. The hypothesis that in each pollen grain, the minimum temperature requirements (Tn) and maximum temperature limits (Tx) for germination operate independently was accepted by comparing multiplicative and subtractive probability models. The maximum temperature limit for PG in 50% of grains (Tx(50)) was the lowest (29.8 °C) in IR64 compared with CG14 (34.3 °C) and N22 (35.6 °C). Standard deviation (sx) of Tx was also low in IR64 (2.3 °C) suggesting that the mechanism of IR64's susceptibility to high temperatures may relate to PG. Optimum germination temperatures and thermal times for 1 mm PTG were not linked to tolerating high temperatures at anthesis. However, the parameters Tx(50) and sx in the germination model define new pragmatic criteria for successful and resilient PG, preferable to the more traditional cardinal (maximum and minimum) temperatures. 2016-01 2024-12-19T12:55:03Z 2024-12-19T12:55:03Z Journal Article https://hdl.handle.net/10568/165423 en Wiley Coast, Onoriode; Murdoch, Alistair J.; Ellis, Richard H.; Hay, Fiona R. and Jagadish, Krishna S.V. 2016. Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress. Plant Cell and Environment, Volume 39 no. 1 p. 26-37 |
| spellingShingle | climatic change climatic factors germination oryza glaberrima pollen temperature Coast, Onoriode Murdoch, Alistair J. Ellis, Richard H. Hay, Fiona R. Jagadish, Krishna S.V. Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress |
| title | Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress |
| title_full | Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress |
| title_fullStr | Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress |
| title_full_unstemmed | Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress |
| title_short | Resilience of rice (Oryza spp.) pollen germination and tube growth to temperature stress |
| title_sort | resilience of rice oryza spp pollen germination and tube growth to temperature stress |
| topic | climatic change climatic factors germination oryza glaberrima pollen temperature |
| url | https://hdl.handle.net/10568/165423 |
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