1993 Fiscal Year Final Research Report Summary
Classification of Japanese Pear Cultivars by Characteristics of Ethylene Evolution in Ripening Fruits
| Project/Area Number |
03454049
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
園芸・造園学
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| Research Institution | Tottori University |
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Principal Investigator |
TANABE Kenji Tottori University, Faculty of Agriculture, Professor, 農学部, 教授 (40032106)
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| Co-Investigator(Kenkyū-buntansha) |
ITAI Akihiro Tottori University, Faculty of Agriculture, Research Associate, 農学部, 助手 (10252876)
TAMURA Fumio Tottori University, Faculty of Agriculture, Lecturer, 農学部, 講師 (50217197)
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| Project Period (FY) |
1991 – 1993
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| Keywords | Japanese pear / fruit ripening / ethylene forming enzyme / cultivar / polyamine / ethylene production / 1-aminocyclopropane-1-carboxylic acid |
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| Research Abstract |
The investigation on the relation between the ethylene production and storage characteristics of Jajpanese pears which connected with the ripening situation of frit was begun in 1989. It was shown that the more the ethylene producted the earlier the ripening period of fruit and the worse the storage characteristics. Since 1991, a lot of outstanding research results have been reached by the supporting of Grant-in-Aid for Scientific Research (B).
The cultivars, which had a high content of ACC,the pre-producted substnace of ethylene, always had a high EFE activity. But, there were also some cultivars, such as Nijisseiki, which had higher ACC level and EFE activity but the ethylene production was quite limited.
The relationship between the ethylene production and the activity of enzyme in vacuole membrane had been investigated, and the results shown there was no relation between then.
In the late maturing cultivars, few ethylene production resulted from the lower activity of EFE and higher content of malonyl ACC which is a kind of polyamine related with putrescine.
From 1989 to 1993,70 cultivars of Japanese pears were researched, and they were divided into 4 groups according to the result.
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