Effects of Temperature and Light on Growth and Development of Quinoa Seedlings

Quinoa seedlings were cross-treated with two different light periods（8 and 12 hours）and two different temperatures（10 and 25 ℃）.Effects of temperature and light on germination rate，fresh weight，dry weight，water content，plant height and root length，root activity and chlorophyll content of quinoa seedlings were studied in order to provide basis for high yield planting.Results showed that fresh weight，dry weight and plant height of seedlings were the highest at 25 ℃ for 8 h，but there was no significant difference with other treatments.Chlorophyll content and root activity were highest when seedlings were exposed to 12 h light at 10 ℃.It could be seen that low temperature prolonging illumination time was conducive to later growth of quinoa，and quinoa was suitable for planting in cold areas.