生物技术通报2016，Vol.32Issue(7)：99-105,7.DOI:10.13560/j.cnki.biotech.bull.1985.2016.07.015
温度对裂片石莼生长及叶绿素荧光特性的影响
Effect of Temperature on Growth and Chlorophyll Fluorescence of Ulva fasciata
摘要
Abstract
In order to study the temperature adaptation mechanism of Ulva fasciata Delile,culturing the U. fasciata under the temperatures :5℃,10℃,15℃,20℃,25℃,30℃,33℃ and 35℃ for 7 d,and the growth change,chlorophyll content,and indexes of chlorophyll fluorescence of U. fasciata at different temperatures as well as the parameters of chlorophyll fluorescence after re-culturing at 25℃were examined to understand the effects of different temperatures on the U. fasciata. Results showed that growth rate,chlorophyll content, the indexes of fluorescence(optimal photo-chemical quantum yield(Fv/Fm),effective optimal photo-chemical quantum yield(Fv'/Fm'), photosynthetic light use efficiency(α),and photo-chemical quenching(qP))all reached the maximum at 25℃. All these physiological indexes of the seaweeds decreased gradually when the temperature were higher or lower than 25℃,and the lowest at 5℃ and 35℃ ;however, the non-photo-chemical quenching(NPQ)gradually rose with the increase or decrease of temperature,and till its maximum value at 10℃. The Fv/Fm and Fv'/Fm' values of the samples of 5℃ to 30℃ groups increased a bit after they were recovered at 25℃ for 2 d,and the highest increment occurred in 10℃ group. Meanwhile,the indexes did not change in the group of 33℃ and 35℃ after recovered cultivation. The results indicated that the most appropriate temperature for U. fasciata to grow and photo-synthesis was in a range of 15℃ to 30℃,5℃and 35℃ were the lowest and highest growth temperature respectively,and U. fasciata showed greater tolerance to low temperature than to high temperature.关键词
裂片石莼/温度/生长/叶绿素荧光Key words
Ulva fasciata/temperature/growth/chlorophyll fluorescence引用本文复制引用
黄艳花,杨锐,孙庆海..温度对裂片石莼生长及叶绿素荧光特性的影响[J].生物技术通报,2016,32(7):99-105,7.基金项目
浙江省公益项目（2015C32004），宁波市科技富民项目（2015C10062），宁波大学水产浙江省重中之重一级学科开放基金项目 （）
