Work

Response of Reaumuria songorica seedlings to photoperiod and light quality ratio

Year: 2025

Type: article

Abstract: AimsThe aim of this study was to better understand the regulatory mechanism of growth and development of Reaumuria songorica seedlings, and to provide some references for the cultivation and restoration of desert plants. MethodsThis study uses one-year-old seedlings of R. songorica as materials to investigate the effects of photoperiods and light quality ratios on their growth.LED lights were used as the light source, and three photoperiods and six light quality ratios were set up for cross-cultivation.The plant height, branch number, biomass and photosynthetic pigment content of the R. songorica seedlings were measured to evaluate their growth, and the effects of photoperiod and light quality ratio on their growth were investigated. Important findingsThe appropriate photoperiod and light quality ratio played an important role in the growth and development of R. songorica seedlings.Increasing the light duration can promote the growth of R. songorica.When the ratio of red-to blue-light was 3:1, the growth rate of plant height increased by 20.20% and 88.47% for 14 and 16 h daily light duration, respectively, in comparison with 12 h.When the ratio of red-to blue-light was 1:3 and the daily light duration was 14 and 16 h, the number of primary branches increased by 6.67% and 66.67%, and the underground biomass increased by 259.85% and 551.82%, respectively, in comparison with 12 h.High proportion of red-light and high proportion of blue-light treatment can promote the growth of R. songorica seedlings, but the growth rate of plant height and the change trend of primary branch number is opposite.Under the light quality ratio of red-to blue-light was 4:1, the growth rate of plant height increased with photoperiod, ©植物生态学报 Chinese Journal of Plant Ecology上官瑶瑶等: 红砂幼苗对光周期和光质配比的响应 789

Source: Chinese Journal of Plant Ecology

DOI: 10.17521/cjpe.2024.0089