Temporal physiological and biochemical changes in Hippeastrum vittatum ‘Red Lion’ bulbs stored at different temperatures
Starch and soluble sugar concentrations, α-amylase activity and soluble protein of Hippeastrum vittatum ‘Red Lion’ bulbs were assessed under different storage temperatures and storage periods. Bulbs were stored for 45 days at 20°, 12°, 8° or 4°C. Starch concentrati...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Maejo University
2014-05-01
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| Series: | Maejo International Journal of Science and Technology |
| Subjects: | |
| Online Access: | http://www.mijst.mju.ac.th/vol8/114-121.pdf |
| Summary: | Starch and soluble sugar concentrations, α-amylase activity and soluble protein of
Hippeastrum vittatum ‘Red Lion’ bulbs were assessed under different storage temperatures and storage periods. Bulbs were stored for 45 days at 20°, 12°, 8° or 4°C. Starch concentration decreased most at 4°C on the 45th day, changing from 29.7% to 10.9% in the exterior scales and from 33.0% to 13.0% in the interior scales. The α-amylase activity in the exterior scales, except at 4° and 8°C, decreased significantly between 0 and 15 days of storage, and then increased significantly from the 15th day until the end of the trial. The soluble sugar concentration increased most at 4°C: in the exterior scales it changed from 54.73 to 153.93 mg•g-1 while in the interior scales it increased from 39.67 to 148.11 mg•g-1. The soluble protein concentration in all treatments peaked on the 30th day at 8°C in the exterior scales (2.15 mg•g-1) and at 12°C in the interior scales (2.17 mg•g-1). Understanding these physiological and biochemical changes in the bulbs of H. vittatum after storage would serve as a reference for bulb dormancy mechanisms in future studies.
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| ISSN: | 1905-7873 1905-7873 |