Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (10): 2077-2086.DOI: 10.3969/j.issn.1004-1524.20250197

• Horticultural Science • Previous Articles     Next Articles

Effect of light quality and supplementary lighting duaration on growth and development of Taxus chinensis var. mairei

LI Wenyang1(), LIU Yang1, LI Yong2, QIU Wenwen3, WANG Hui1,*()   

  1. 1. Key Laboratory of Tree Genetics and Breeding in Xinyang, College of Forestry, Xinyang Agriculture and Forestry University, Xinyang 464000, Henan, China
    2. Luoshan Forestry Bureau, Luoshan 464299, Henan, China
    3. Forestry Technology Extension Station, Xixian Forestry Bureau, Xixian 464399, Henan, China
  • Received:2025-03-13 Online:2025-10-25 Published:2025-11-13

Abstract:

In order to find the optimal light environment for facility cultivation of Taxus wallichiana var. mairei, three light qualities, including pure red light (R), combinatin of red and blue light at the ratio of 2∶1 (R2B) and 1∶1 (RB) were set, as well as three supplementary lighting durations (4, 6, 8 h·d-1), with natural light as the control (CK). The plant height, ground diameter, photosynthetic pigments content, color parameters, superoxide dismutase (SOD) activity, malondialdehyde (MDA) content, and catalase (CAT) activity of the leaves were measured. The results showed that on the 71st day of cultivation, the plant height was the highest under 8 h R treatment, and the ground diameter was the largest under the 6 h RB treatment, which were significantly (p<0.05) increased by 25.50% and 74.17% than those of CK, respectively. On the 71st day of cultivation, the content of carotenoid in the leaves was the highest under the 8 h R treatment, and the contents of chlorophyll b and total chlorophyll in the leaves were the highest under the 4 h R treatment, which were all significantly higher than those of CK. Compared with the CK on the 71st day of cultivation, the 8 h R treatment significantly reduced the lightness value (L*) and the yellowness value (b*) of leaves, yet significantly increased the redness value (a*). The SOD activity in the leaves was the highest under the 4 h R treatment, which was significantly higher than that of CK. Under this experiment condition, the 8 h R treatment exhibited the best performance on promoting growth and enhancing resistance to stress of Taxus wallichiana var. mairei, which was revealed by the comprehensive membership degree.

Key words: Taxus chinensis var. mairei, light emitting diode (LED), light quality, supplementary lighting duration, growth and development

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