几种特色甘薯叶片光合作用特征的研究  

Leaf Photosynthesis Characteristics of Several Distinctive Sweet Potatoes

作　　者：潘妃 邢铮[1] 秦玉芝[1,2] 段桂芳 王利群 段秋红 周香城 

机构地区：[1]湖南农业大学园艺园林学院,湖南长沙410128 [2]湖南省马铃薯工程技术研究中心,湖南长沙410128 [3]植物功能基因组学与发育调控湖南省重点实验室,湖南长沙410082

出　　处：《湖南农业科学》2013年第11期26-28,共3页Hunan Agricultural Sciences

基　　金："十二五"农村领域国家科技计划课题(2012BAD 02B05-8);农业部马铃薯产业技术体系(CARS-10-P19);公益性行业(农业)专项(201203096);2013年湖南农业大学大学生科技创新基金

摘　　要：为提高甘薯光合利用率、完善特色甘薯高产栽培技术,试验研究了几种特色甘薯光合速率的日变化规律、光照强度和CO2浓度变化对不同类型甘薯叶片光合作用的影响。结果显示:几种特色甘薯光合作用日变化均呈单峰曲线,峰值出现在10∶00~12∶00;叶片的光合作用饱和点为630~810μmol/m2·s,光合作用补偿点为44~68μmol/m2·s;叶片的CO2饱和点为450~550μmol/m2·s,CO2补偿点为50~70μmol/m2·s;不同类型甘薯叶片的最大净光合速率、光补偿点、光饱和点、CO2补偿点、CO2饱和点之间均存在极显著差异。In order to enhance photosynthesis utilization of sweet potato and to perfect high-yield culture techniques of distinctive sweet potato, the influences of daily variation rules of photosynthetic rate and changes in illustration intensity and CO2 concentration of several distinctive sweet potatoes on leaf photosynthesis of different varieties of sweet potato. The results showed that the daily variation of photosynthesis of several sweet potatoes all showed single peak curve, and the peak value appeared from 10:00 to 12:00;the saturation point and the compensation point of leaf photosynthesis were 630~810μmol/m2·s and 44~68μmol/m2·s, respectively;the saturation point and the compensation point of leaf CO2 were 450~550 μmol/m2·s and 50~70 μmol/m2·s, respectively; there were extremely significant differences in the maximum net photosynthesis rate, light compensation point, light saturation point, CO2 compensation point and CO2 saturation point among different varieties of sweet potato leaf.

关 键 词：特色甘薯 光合作用 光照强度 CO2浓度 

分 类 号：S531[农业科学—作物学]