2022 Fiscal Year Final Research Report
Mechanism on plant growth promotion with companion planting of Lamiaceae plants and establishment of new plant growth regulation method
| Project/Area Number |
20K06033
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 39030:Horticultural science-related
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| Research Institution | Gifu University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | シソ科ハーブ / 混植 / 成長促進 / 環境ストレス耐性 / 2次代謝成分 / メタボローム / 遊離アミノ酸 / バイオスティミュラント |
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| Outline of Final Research Achievements |
The mechanisms on companion planting with Lamiaceae plants have been scientifically still unclear. This study mainly concentrated on the changes in secondary metabolites. Growth promotion and increase in secondary metabolites and free amino acids were confirmed in tomato plants with several herb companion. In strawberry and melon, water extract etc. of Lamiaceae plants induced growth promotion, yield increase, disease and heat stress tolerance in strawberry and melon; these effects further increased with the use of mycorrhiza. From these findings, new cultivation methods using priming effect by secondary metabolites of Lamiaceae plants have been established for plant growth promotion, increasing the yields and environmental stress tolerance.
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| Free Research Field |
園芸植物栽培学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では、シソ科植物（ハーブ）混植による植物体成長促進には、主に2次代謝成分変動によるプライミング作用が密接に関わっていることを示唆した。また、シソ科植物の抽出液等処理により、混植せずに植物体成長促進、収量性向上、環境ストレス耐性向上を図れることを明らかにした。一方、これらの効果は、有用微生物である菌根菌の併用処理によって高まることも示唆された。これらの成果は、化学肥料及び化学農薬の低減化を図る手法として、植物栽培全般に貢献出来る手法に繋がると考えられる。
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