Effect of Light Quality on Growth and Taxanes Contents of Taxus yunnanensis

• Published in: Forest research (Beijing) Vol. 25; no. 4; pp. 419 - 424
• Main Authors: Su, J-R, Zang, C-F, Liu, W-D, Li, S-F, Zhang, Z-J
• Format: Journal Article
• Language: Chinese
• Published: 01.08.2012
• Subjects: Taxus
• ISSN: 1001-1498

In order to study the effect of light quality on the growth, photosynthesis and Taxanes accumulation of Taxus yunnanensis, 2-years old young T. yunnanensis were planted under various color films for 1 year. Their size, biomass, architectural parameters, leaf feature, and photosynthetic parameters such as the maximal net photosynthesis rate (P sub(max)), apparent quantum yield (AQY), dark respiration rate (R sub(d)), light saturation point (LSP), light compensation point (LCP) and Taxol content etc. were determined. The results showed that the P sub(max), AQY, R sub(d), LSP, LCP, height, leaf and total biomass of the plants under red films increased. The P sub(max), AQY of the plants under yellow films decreased, and the LSP, LCP, leaf, branch, root and total biomass increased. The P sub(max) and AQY, and ground diameter of the plants under blue films decreased, while the R sub(d), LSP, LCP and height increased. Under different color films, the diffrence of tananes content in the plants were not significant. T