The investigation of the dormancy control in deciduous fruit trees- The new analytical method used by the 'tree joint' method

• Project/Area Number: 19780018
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Horticulture/Landscape architecture
• Research Institution: University of Tsukuba
• Principal Investigator: SEKOZAWA Yoshihiko University of Tsukuba, 大学院・生命環境科学研究科, 助教 (90361310)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,810,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥510,000); Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2007: ¥1,600,000 (Direct Cost: ¥1,600,000)
• Keywords: 気候変動 / 休眠覚醒 / 果樹 / 樹体ジョイント / ニホンナシ / ジョイント法 / ジョウント法

Research Abstract

The main objective of this work was to analyze the translocation of the stimulation induced by the dormancy-breaking chemical (cyanamide) from the adjacent tree grafted by the 'tree joint' method in order to elucidate the mechanism of in poorly synchronized flowering and adaptation problems in releasing from dormancy of deciduous fruit tree influenced by global warming. The effect was conducted from the adjacent tree through the graft union, therefore, it was suggested that the outside organ of a dormant bud affected its breaking dormancy.