Non-destructive Measurement of Chlorophyll Concentration of Fruit Skin in Japanese Pear
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- Yamane Takayoshi
- Division of Fruit Production and Post harvest Science, Institute of Fruit Tree and Tea Science, NARO
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- Harata Masayuki
- Chiyoda Electronics Co., Ltd.
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- Hayama Hiroko
- Division of Fruit Production and Post harvest Science, Institute of Fruit Tree and Tea Science, NARO
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- Mitani Nobuhito
- Division of Fruit Production and Post harvest Science, Institute of Fruit Tree and Tea Science, NARO
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- Nakamura Yuri
- Division of Fruit Production and Post harvest Science, Institute of Fruit Tree and Tea Science, NARO
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- Kusaba Shinnosuke
- Division of Fruit Production and Post harvest Science, Institute of Fruit Tree and Tea Science, NARO
Bibliographic Information
- Other Title
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- ニホンナシにおける果皮のクロロフィル含量の非破壊計測
- ニホンナシ ニ オケル カヒ ノ クロロフィル ガンリョウ ノ ヒハカイ ケイソク
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Abstract
<p>In order to develop a non-destructive method to measure the chlorophyll concentration of fruit skin in Japanese pear (Pyrus pyrifolia), reflectance of diffused light through the skin of fruit over a cork layer was measured using a portable spectrometer. Reflectance was acquired in the 650–740 nm wavelength range to establish a model to predict chlorophyll a and b concentrations using partial least squares regression. The chlorophyll concentration was precisely predicted by each model (r 2 = 0.962–0.974) in ‘Kosui’, ‘Hosui’, and ‘Akizuki’ in 2016. Chlorophyll concentrations of these three cultivars in 2016 were also estimated with small errors using the prediction model of ‘Kosui’ in 2017. The chlorophyll concentration showed a high correlation with the ground color index (r 2 = 0.937–0.953) in all cultivars. The prediction model was affected by the temperature of fruit. However, the error decreased with the prediction model established based on mixed fruit with various temperatures. The chlorophyll concentration measured in the field exposed to sunshine showed almost the same value as that measured under room conditions. From these results, the chlorophyll concentration could be non-destructively, precisely, and rapidly estimated over a cork layer either in a room or field using the portable spectrometer, and this can be used to confirm the maturity of Japanese pear.</p>
Journal
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- Horticultural Research (Japan)
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Horticultural Research (Japan) 18 (3), 253-258, 2019
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
- 1390845702292941568
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- NII Article ID
- 130007720199
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- NII Book ID
- AA11608561
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- ISSN
- 18803571
- 13472658
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- NDL BIB ID
- 029880185
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed