Effects of Plant Growth Regulators on Fruit Set and Fruit Shape of Parthenocarpic Apple Fruits
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- Watanabe Manabu
- Field Science Center, Faculty of Agriculture, Iwate University
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- Segawa Hideyuki
- Field Science Center, Faculty of Agriculture, Iwate University
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- Murakami Masanobu
- Field Science Center, Faculty of Agriculture, Iwate University
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- Sagawa Satoru
- Field Science Center, Faculty of Agriculture, Iwate University
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- Komori Sadao
- Faculty of Agriculture, Iwate University
Bibliographic Information
- Other Title
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- 植物成長調節剤の散布処理がリンゴ単為結実果の結実率および果形に及ぼす影響
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Abstract
We applied auxin, cytokinin, gibberellins, and gibberellin synthetic inhibitor to flowers of ‘Ohrin’, which is parthenocarpic, and ‘Fuji’, which is non-parthenocarpic, to elucidate the relationship between plant growth regulators and parthenocarpy in apple. The percentage of fruit set in gibberellin A3 (GA3) was about 60% in ‘Ohrin’ and about 7% in ‘Fuji’. Forchlorfenuron (CPPU) combined with GA3 treatment increased the fruit retention rate more than 14 days after treatment (DAT) than GA3 alone. Dichlorprop (2,4-DP) combined with GA3 slightly enhanced the gibberellin effect of inducing parthenocarpy. In ‘Ohrin’, GA3 and gibberellin A4 + 7 (GA4 + 7) showed a higher fruit retention rate before flowering than after. Parthenocarpic fruits were induced even when uniconazole (UCZ) was sprayed after flowering, but not before flowering. The calyx end was large in GA4 + 7, and in GA3 and CPPU singly, and GA3 and CPPU combined treatments, which increased the percentage of fruit set. These results suggest that gibberellins before flowering trigger parthenocarpic apple fruits. Subsequent fruit growth requires cytokinins and auxin.<br>
Journal
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- Journal of the Japanese Society for Horticultural Science
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Journal of the Japanese Society for Horticultural Science 77 (4), 350-357, 2008
THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE
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Keywords
Details 詳細情報について
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- CRID
- 1390001205290162816
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- NII Article ID
- 110006975671
- 130004951550
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- NII Book ID
- AA12177046
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- COI
- 1:CAS:528:DC%2BD1cXht1Ols7jI
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- ISSN
- 1882336X
- 18823351
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- NDL BIB ID
- 9749073
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed