Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation
The purpose of this study was to develop a novel method to dramatically improve the production efficiency of sweet potatoes (<i>Ipomoea batatas</i> (L.) Lam.) by elucidating the effect of solar radiation stress on the growth of sweet potato in a multilayer cultivation system. Twenty-five...
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MDPI AG
2023-01-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/2/287 |
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| author | Takahiro Suzuki Masaru Sakamoto Hiroshi Kubo Yui Miyabe Daisuke Hiroshima |
| author_facet | Takahiro Suzuki Masaru Sakamoto Hiroshi Kubo Yui Miyabe Daisuke Hiroshima |
| author_sort | Takahiro Suzuki |
| collection | DOAJ |
| description | The purpose of this study was to develop a novel method to dramatically improve the production efficiency of sweet potatoes (<i>Ipomoea batatas</i> (L.) Lam.) by elucidating the effect of solar radiation stress on the growth of sweet potato in a multilayer cultivation system. Twenty-five pots planted with sweet potato vine seedlings were arranged in three layers and cultivated for 160 days while supplying liquid fertilizer to the root zone. While solar radiation in the middle and lower layers decreased to 69% and 45% of that in the upper layer, respectively, the yield of tuberous roots was 0.89 kg/pot in the upper layer, 0.79 kg/pot in the middle layer, and 0.66 kg/pot in the lower layer. As a result, the productivity of tuberous roots reached 10.5 kg/m<sup>2</sup>, 4.4 times that of conventional farming. On the other hand, the amounts of leaves and stems increased in the lower layer than in the upper layer, and the biomass energy yield (photosynthetic efficiency) was 2.8% in the upper layer, 3.7% in the middle layer, and 5.1% in the lower layer. Leaves in the lower layer with less solar radiation had a lower polyphenol content and increased the amounts of low-brightness leaves. In contrast, the upper leaves were found to contain more polyphenols and have brighter, smaller leaves. These results suggest that the yield can be further increased by optimizing solar radiation stress by using the multilayer cultivation method. |
| first_indexed | 2024-03-09T11:25:55Z |
| format | Article |
| id | doaj.art-cb6ae46e500342858106f8354418b31a |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T11:25:55Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
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| series | Plants |
| spelling | doaj.art-cb6ae46e500342858106f8354418b31a2023-12-01T00:04:07ZengMDPI AGPlants2223-77472023-01-0112228710.3390/plants12020287Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato CultivationTakahiro Suzuki0Masaru Sakamoto1Hiroshi Kubo2Yui Miyabe3Daisuke Hiroshima4Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama 649-6493, JapanFaculty of Biology-Oriented Science and Technology, Kindai University, Wakayama 649-6493, JapanJapan Sewage Works Agency, Higashiku, Nagoya 461-0025, JapanJapan Sewage Works Agency, Higashiku, Nagoya 461-0025, JapanWater Agency Inc., Hamamatsu 435-0016, JapanThe purpose of this study was to develop a novel method to dramatically improve the production efficiency of sweet potatoes (<i>Ipomoea batatas</i> (L.) Lam.) by elucidating the effect of solar radiation stress on the growth of sweet potato in a multilayer cultivation system. Twenty-five pots planted with sweet potato vine seedlings were arranged in three layers and cultivated for 160 days while supplying liquid fertilizer to the root zone. While solar radiation in the middle and lower layers decreased to 69% and 45% of that in the upper layer, respectively, the yield of tuberous roots was 0.89 kg/pot in the upper layer, 0.79 kg/pot in the middle layer, and 0.66 kg/pot in the lower layer. As a result, the productivity of tuberous roots reached 10.5 kg/m<sup>2</sup>, 4.4 times that of conventional farming. On the other hand, the amounts of leaves and stems increased in the lower layer than in the upper layer, and the biomass energy yield (photosynthetic efficiency) was 2.8% in the upper layer, 3.7% in the middle layer, and 5.1% in the lower layer. Leaves in the lower layer with less solar radiation had a lower polyphenol content and increased the amounts of low-brightness leaves. In contrast, the upper leaves were found to contain more polyphenols and have brighter, smaller leaves. These results suggest that the yield can be further increased by optimizing solar radiation stress by using the multilayer cultivation method.https://www.mdpi.com/2223-7747/12/2/287sweet potatosolar radiationphotosynthetic yieldmultilayered cultivationpolyphenol |
| spellingShingle | Takahiro Suzuki Masaru Sakamoto Hiroshi Kubo Yui Miyabe Daisuke Hiroshima Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation Plants sweet potato solar radiation photosynthetic yield multilayered cultivation polyphenol |
| title | Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation |
| title_full | Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation |
| title_fullStr | Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation |
| title_full_unstemmed | Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation |
| title_short | Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation |
| title_sort | effects of solar radiation on leaf development and yield of tuberous roots in multilayered sweet potato cultivation |
| topic | sweet potato solar radiation photosynthetic yield multilayered cultivation polyphenol |
| url | https://www.mdpi.com/2223-7747/12/2/287 |
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