Cardinal Temperatures and Thermal Time for Germination of Sarawak Traditional Rice
Germination of two rice landraces, namely Bario Sederhana and Biris, was determined from twelve temperatures (12.5 – 40 ºC) in a series of incubation experiments. The cardinal temperatures and thermal time for germination were estimated from a ‘broken-stick’ linear model. Both landraces had a Tb of...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Malaysian Society of Applied Biology
2023
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/43852/4/Cardinal.pdf http://ir.unimas.my/id/eprint/43852/ https://jms.mabjournal.com/index.php/mab/about https://doi.org/10.55230/mabjournal.v52i5.2630 |
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| Summary: | Germination of two rice landraces, namely Bario Sederhana and Biris, was determined from twelve temperatures (12.5 – 40 ºC) in a series of incubation experiments. The cardinal temperatures and thermal time for germination were estimated from a ‘broken-stick’ linear model. Both landraces had a Tb of 10 ºC, Topt between 32 – 33 ºC, and Tmax of 43 ºC. At the sub-optimal temperatures, the thermal time for germination was 62 oCd for Bario Sederhana and 53 ºCd for Biris. Within the supra-optimal range (Topt to Tmax), both landraces required 27-29 ºCd for seed germination. The maximum final germination for Bario Sederhana was 93% at 30 ºC while Biris had 100% seeds population germinated at 27.5 ºC. |
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