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| 題名: | Biochemical and Physiological Characteristics of Photosynthesis in Plants of Two Calathea Species |
| 作者: | Nguyen, HC (Hoang Chinh Nguyen)
Lin, KH (Lin, Kuan-Hung)
Hsiung, TC (Hsiung, Tung-Chuan)
Huang, MY (Huang, Meng-Yuan)
Yang, CM (Yang, Chi-Ming)
Weng, JH (Weng, Jen-Hsien)
Hsu, MH (Hsu, Ming-Huang)
Chen, PY (Chen, Po-Yen)
Chang, KC (Chang, Kai-Chieh) |
| 貢獻者: | 生命科技研究所 |
| 關鍵詞: | PHOTOCHEMICAL REFLECTANCE INDEX
CHLOROPHYLL FLUORESCENCE
PHOTOSYSTEM-II
SPECTRAL REFLECTANCE
ENERGY-DISSIPATION
PHENOLIC-COMPOUNDS
EXCITATION-ENERGY
XANTHOPHYLL CYCLE
VEGETATION INDEX
USE EFFICIENCY |
| 日期: | 2018-03 |
| 上傳時間: | 2019-01-21 14:53:09 (UTC+8) |
| 摘要: | Plants of the genus Calathea possess many leaf colors, and they are economically important because they are widely used as ornamentals for interior landscaping. Physiological performances and photosynthetic capacities of C. insignis and C. makoyana were investigated. The photosynthetic efficiencies of C. insignis and C. makoyana were significantly increased when the photosynthetic photon flux density (PPFD) increased from 0 to 600 mu mol photons.m(-2).s(-1) and became saturated with a further increase in the PPFD. The two Calathea species had lower values of both the light saturation point and maximal photosynthetic rate, which indicated that they are shade plants. No significant differences in predawn Fv/Fm values (close to 0.8) were observed between dark-green (DG) and light-green (LG) leaf sectors in all tested leaves. However, the effective quantum yield of photosystem II largely decreased as the PPFD increased. An increase in the apparent photosynthetic electron transport rate was observed in both species to a maximum at 600 mu mol.m(-2).s(-1) PPFD, following by a decrease to 1500 mu mol.m(-2).s(-1) PPFD. Compared to LG leaf extracts, DG leaf extracts contained higher levels of chlorophyll (Chl) a, Chl b, Chls a + b, carotenoids (Cars), anthocyanins (Ants), flavonoids (Flas), and polyphenols (PPs) in all plants, except for the Ant, Fla and PP contents of C. insignis plants. Calathea insignis also contained significantly higher levels of total protein than did C. makoyana. The adjusted normalized difference vegetation index (NDVI), photochemical reflectance index (PRI), red-green, and flavonol index (FlavI) were significantly correlated to leaf Chls a + b, Cars, Ants, and Flas in C. makoyana, respectively, and can be used as indicators to characterize the physiology of these plants. |
| 顯示於類別: | [生物科技研究所 ] 期刊論文
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