摘要
鄂尔多斯高原碱湖的钝顶螺旋藻光合色素含量高低排列为藻胆素>叶绿素a>类胡萝卜素;各色素具有特定的吸收光谱,活体吸收光谱体现出了各色素的吸收;各色素的荧光发射主峰波长约长于活体的13￣35nm,相对荧光强度约是活体的11倍。其光合速率的日变化呈单峰曲线,13:00时达到最高;光补偿点为28￣30μmol.m-2.s-1;光饱和点为220￣235μmol.m-2.s-1;光合作用的最适温度为35℃。呼吸速率日变化随温度的升高呈缓慢上升的趋势。
Spirulina （Arthrospira）platensis has 3 kinds of photosynthetic pigment. Their contents in Spirulina（Arthrospira） platensis are phycobilin 〉 Chls 〉 carotenoid. Each pigment has its own absorption characteristics in a different spectrum range, and some absorption characteristics appear in the absorption spectrum of ＇the living body. The value of fluorescence emission apexes in all pigments is higher by 13-15 nm than that in the living body. The relative fluorescence density of pigment is 11-fold greater than that in living body. The change of photosynthetic rate is a single-peak curve, and the highest photosynthetic rate is at 13：00 in a day. The light saturation point is 28-30 μmol·m^-2·s^-1, the light compensation point is 220-235 μmol·m^-2·s^-1, and the optimal temperature for photosynthesis is 35 ℃, The respiration rate increases slowly with temperature.
出处
《植物学通报》
CSCD
北大核心
2005年第B08期57-63,共7页
Chinese Bulletin of Botany
基金
国家自然科学基金项目(39960062)
内蒙古自然科学基金项目(990303-4)资助
