2012 Fiscal Year Final Research Report
Possible causes and mechanisms of physiological disorders developed in mature peach fruit, and the methods for reducing disorders
| Project/Area Number |
22380026
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Okayama University of Science (2012)
Okayama University (2010-2011) |
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Principal Investigator |
KUBOTA Naohiro 岡山理科大学, 生物地球学部, 教授 (70033272)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUDA Fumio 岡山大学, 大学院・環境生命科学研究科, 准教授 (60294443)
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| Project Period (FY) |
2010 – 2012
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| Keywords | モモ / 果肉障害 / 赤肉症 / 水浸状果肉褐変症 / 障害の特徴 / 発生要因 / 発生機構 / 発生防止策 |
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| Research Abstract |
Of physiological disorders developed in mature peach fruit, reddish-pulp (RP) which flesh undergoes a pink to red discoloration and water-soaked brown pulp (WSBP) which flesh exhibits a water-like,were the most serious. The rate of development of complication (CP)concurred these disorders increased with the years, but its symptom was similar to those of WSBP. Both the rate and degree of RP and WSBP developments varied largely among cultivars, years and growing conditions. The rate of RP and WSBP developments was increased by small application of nitrogen fertilizer and girdling treatment to twigs, respectively. In the latter 13C-photosynthates were translocated into fruits larger in girdled twigs than those in un-girdled ones. Thinning of flowers opened before full bloom decreased in the rate of WSBP development. The possible cause(s) and mechanism(s) of the development of these disorders in peach fruit are discussed.
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