[Effects of combined red, blue and white LED light on the quality of eggplant seedlings and fruit peels.].

The effects of red/blue=3/1 [R/B=3/1(9/3), as control, CK], white light (W, as control, CK), and combined light of red, blue and white [R/B/W=3/1/1 (9/3/3), T; R/B/W=9/3/8, T; R/B/W=3/1/6 (9/3/18), T; R/B/W=3/1/16 (9/3/48), T] on the growth, root development, quality and yield of eggplants were examined to provide theoretical and technical support for intensive and high-efficient light supplement and eggplant seedlings cultivation, using LED to accurately regulate light environment and 'Gailiangdalong' eggplant, based on the previous findings of the benefits of R/B=3/1 to the cultivation of eggplant seedlings. The results showed that R/B/W=9/3/8 treatment significantly increased plant height, stem diameter, seedling index, shoot dry weight, root dry weight, root development, anthocyanins and flavonoids content in eggplant peels and early yield. Root/shoot, total phenolic content in eggplant peels and soluble sugar content in pulps under R/B/W=3/1/1 treatment were significantly higher than those of other treatments.

[Effects of different proportions of red and blue light on the growth and photosynthesis of tomato seedlings].

In order to explore the mechanism of response of growth and development of tomato seedlings to the combination of red and blue light, the light-emitting-diodes (LEDs) as precision modulation light sources were used in this study with 7 treatments including red (R) light, blue (B) light and combination of R+B light (9R1B, 6R1B, 3R1B, 1R1B, 1R3B), white (W) light as control, and the effects of different proportions of R and B light on the growth, photosynthetic pigment content, photosynthetic characteristics, chlorophyll fluorescence and root activity of tomato seedlings with variety of 'SV0313TG' as experiment material were studied. The results showed that there were significant differences in growth of tomato seedlings under treatments of different proportions of R and B light. The plant height, specific leaf area and intercellular CO concentration of tomato seedlings were significantly promoted by R light, while F/F and χ were decreased, the root growth was inhibited as the root activity declined, so that the seedling index was reduced.