Effects of Shading on Photosynthesis and Aromatics of Pandan (<i>Pandanus amaryllifolius</i>) Plants

TANG Jinxuan; YU Huan; GUO Caiquan; QIN Xiaowei; BAI Tingyu; ZONG Ying

doi:10.19303/j.issn.1008-0384.2020.08.002

Volume 35 Issue 8

Aug. 2020

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TANG J X, YU H, GUO C Q, et al. Effects of Shading on Photosynthesis and Aromatics of Pandan ( Pandanus amaryllifolius) Plants [J]. Fujian Journal of Agricultural Sciences，2020，35（8）：820−829 doi: 10.19303/j.issn.1008-0384.2020.08.002

Citation:

TANG J X, YU H, GUO C Q, et al. Effects of Shading on Photosynthesis and Aromatics of Pandan ( Pandanus amaryllifolius ) Plants [J]. Fujian Journal of Agricultural Sciences，2020，35（8）：820−829 doi: 10.19303/j.issn.1008-0384.2020.08.002

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Effects of Shading on Photosynthesis and Aromatics of Pandan (Pandanus amaryllifolius) Plants

doi: 10.19303/j.issn.1008-0384.2020.08.002

TANG Jinxuan^{1, 2
,},
YU Huan²,
GUO Caiquan³,
QIN Xiaowei^{2
,
,},
BAI Tingyu²,
ZONG Ying²

1.
College of Horticulture, Hainan University, Haikou, Hainan　570228, China
2.
Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences/Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops/Key Laboratory of Genetic Resource Utilization of Spice and Beverage Crops, Ministry of Agriculture and Rural Affairs, Wanning, Hainan　571533, China
3.
Tropical Crop College, Yunnan Agricultural University, Puer, Yunnan　665000, China

Received Date: 2020-04-17
Rev Recd Date: 2020-06-11
Publish Date: 2020-08-19

Abstract

Abstract

Objective Effects of shading on photosynthesis, growth, and aromatic composition of Pandan (Pandanus amaryllifolius) plants were studied for cultivation improvement. Method In a pot experimentation, pandan plants were grown under either full sun exposure or 30%, 60% or 90% shading. The photosynthesis, growth, and aromatics of the plants were monitored. Result The net photosynthetic rate, stomatal conductance, and count of the leaves on plants grown under 30% and 60% shading were significantly higher than those under either full sun exposure or 90% shading. On the other hand, the tiller number decreased significantly with increasing shading. Twenty-seven volatile aromatic compounds were identified regardless the difference in treatment. There were 10 aromatics, including 2-acetyl-1-pyrrolidine phytol, squalene, 1-propanol, acetol, 3-methyl-2-(5H)-furanone, neophytadiene, ethyl palmitate, 2,3-dihydrobenzofuran, and ethyl linoleate, commonly present, but differed significantly in relative content when the plants were under the varied shading. For instance, the contents of 2-acetyl-1-pyrroline, 3-methyl-2-(5H)-furanone, 2,3-dihydrobenzofuran, ethyl linoleate, and phytol were significantly higher under 30% and 60% shading, those of squalene and phytol significantly higher under 30% shading, and those of acetol, 2-acetyl-1-pyrroline, 3-methyl-2-(5H)-furanone, neophytadiene, ethyl palmitate, and ethyl linoleate significantly higher under 60% shading than the other treatments. Conclusion By artificially imposing 30% or 60% shading, pandan plants grew more vigorously generating more fragrant substances in the leaves than exposing naturally to the sun.
- Pandanus amaryllifolius,
- shading,
- photosynthetic characteristics,
- aroma components

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References(37)

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