光質對‘瑞喜’結球白菜種苗生長之影響

After seedling emergence, the Chinese cabbage 'Auspicious' were grown indoors under LED(Light-Emitting Diode) light of white light and three blue and red light combinations: 5:1(LED-5 :1), 7:1(LED-7:1), and 9: 1 (LED-9:1). Control plants were grown in a net house under natural light. No differences in hypocotyl length, stem length, stem diameter, plant height and photosynthesis were seen for the Chinese cabbage 'Auspicious' grown under different light quality treatments, while a light quality of a red:blue ratio of 9:1 led to the best leaf size and seedling biomass, which were similar to that of the control group. The treatment also resulted in the highest strong seedling index and G value, and a higher photosynthetic rate. The optimal light quality for Chinese cabbage 'Auspicious' was a combination of red and blue light at a ratio of 9:1.