2023 Fiscal Year Final Research Report
Establishment of a chilling stress reduction method for subtropical fruit crops grown in warm temperate zones by application of hydrogen sulfide
| Project/Area Number |
20K15521
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 39030:Horticultural science-related
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 硫化水素 / 低温ストレス / 亜熱帯果樹 / パッションフルーツ / アボカド / 光合成 / 葉の損傷 |
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| Outline of Final Research Achievements |
The application of H2S enhanced photosynthetic rate in passion fruit and avocado, by 15-30% under low temperature stress. On the other hand, no photosynthetic enhancement was observed in cacao. It is considered that photosynthesis were enhanced under mild low temperature stress, but not under severe stress for each crops. In passion fruit, enhanced photosynthesis did not improve fruit quality. Furthermore, H2S had no effect on Fv/Fm, an indicator of leaf damage. In other words, H2S did not suppress leaf damage or plant death.
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| Free Research Field |
園芸科学
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| Academic Significance and Societal Importance of the Research Achievements |
近年，亜熱帯果樹の栽培が暖温帯域にも拡大している．このような状況下にあって，冬季の低温ストレス下においても健全に生育させることが求められている．本研究成果によって，軽微な低温ストレス下であれば，光合成を促進することが可能であり，健全に生育させることが可能であることを示した．この成果は，今後拡大する亜熱帯果樹生産現場に貢献することが予想される．
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