Effects of Air Temperature at the Seedling Stage and Pollination on the Development of Pistillate Flowers and Fruit Set in Cucumbers
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- HIKOSAKA Shoko
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- BOONKORKAEW Patchareeya
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- SUGIYAMA Nobuo
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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Abstract
The effects of high (day/night=30/25°C; H) and low (23/17°C; L) air temperatures on the development of pistillate flowers (PFs) during the seedling stage were clarified in 7 cucumber cultivars (Cucumis sativus L.) in order to identify potential high-yield cultivars in summer. Most of the cultivars developed nodes at a higher rate with H treatment than with the L treatment; however, the number of PF nodes and the total number of PFs on a plant were decreased with the H treatment in ‘028’ (multi-pistillate monoecious cultivar), ‘NK×AN8’ (mono- or di-pistillate gynoecious cultivar) and ‘Toyooka’ (multi-pistillate gynoecious cultivar). With H treatment, ‘028’ and ‘NK×AN8’ bore one PF or less per node, while ‘Toyooka’ produced 1.7 PFs per node. When the ‘028’ and ‘NK×AN8’ cultivars were grown in spring and summer, the PF numbers per PF node during summer were lower in the ‘028’ cultivar but not in ‘NK×AN8’. The fruit abortion rate was higher in summer in both cultivars, and it was reduced slightly by pollination. This study suggests that gynoecious cultivars could achieve a high yield in summer within a short growing period because they bear more PFs per node than multi-pistillate cultivars, and the effect of pollination on fruit abortion was too small to realize a high yield in summer.
Journal
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- Environment Control in Biology
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Environment Control in Biology 46 (4), 249-256, 2008
Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists
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Details 詳細情報について
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- CRID
- 1390282680237214592
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- NII Article ID
- 10024917685
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- NII Book ID
- AA12029220
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- ISSN
- 18830986
- 1880554X
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- NDL BIB ID
- 9787773
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed