2009 Fiscal Year Final Research Report
Development of new cut flower crops through regulating the signal transduction and mechanisms of hypersensitive physiological disorders after harvest
| Project/Area Number |
19580027
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Shinshu University |
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Principal Investigator |
DOI Motoaki Shinshu University, 農学研究科, 教授 (40164090)
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| Project Period (FY) |
2007 – 2009
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| Keywords | カンナ / 切断 / 葉面電位 / クロロフィル蛍光 / 量子収率 / 褐変障害 / 光酸素ストレス / 活性酸素消去系 |
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| Research Abstract |
With a view to developing new cut flower crops, we investigated the postharvest characteristics of canna leaves. The leaf electric potential decreased rapidly after harvest, suggesting that the electric signal caused inrolling and necrotic disorders of leaves. The occurrence of necrotic disorder was accompanied by a decrease in quantum yield. The old leaves harvested at noon exhibited severe disorders, while the young leaves harvested before sunrise rarely did. In these young leaves, the scavenging capacity of active oxygen, such as ascorbate peroxidase activity, was higher than that of old leaves.
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