CO2加富对不同辣椒品种光合特性的影响  

Effects of CO2 enrichment on photosynthetic characteristics of different pepper varieties

作　　者：白瑞 张静[1,2] 宋红霞 郑少文[1,2] 李梅兰 侯雷平[1,2] BAI Rui;ZHANG Jing;SONG Hongxia;ZHENG Shaowen;LI Meilan;HOU Leiping(College of Horticultural Science,Shanxi Agricultural University,Taigu 030801,Shanxi,China;Collaborative Innovation Center of Improving Quality and Increasing Profits for Protected Vegetables in Shanxi,Taigu 030801,Shanxi,China)

机构地区：[1]山西农业大学园艺学院,山西太谷030801 [2]山西省设施蔬菜提质增效协同创新中心,山西太谷030801

出　　处：《中国瓜菜》2020年第3期43-48,共6页China Cucurbits And Vegetables

基　　金：山西省煤基重点科技攻关项目(FT201402-06)。

摘　　要：以4个辣椒品种为研究对象,分别对辣椒的净光合速率、气孔导度、蒸腾速率、胞间CO2浓度等光合特性进行测定,利用曲线模型拟合辣椒光响应曲线和CO2响应曲线,阐明CO2加富对不同辣椒品种光合特性的影响.结果表明,CO2加富后,除'海丰长剑'外,增施CO2后其他3个辣椒品种的净光合速率均显著增高,其中,'寿龙1号'的净光合速率增加最显著,由18.62μmol·m-2·s-1增加到30.11μmol·m-2·s-1,增幅为61.70%;CO2加富后,'皇朝'和'寿龙1号'的气孔导度显著降低,'寿龙1号'的气孔导度降低最显著,由0.53 mol·m-2·s-1降低到0.36 mol·m-2·s-1,降幅为32.5%;CO2加富后,4个辣椒品种的胞间CO2浓度均显著提高,'美达108'的胞间CO2浓度提升幅度最显著,由240.51μmol·mol-1提升至610.51μmol·mol-1,增幅达到153.8%;CO2加富后,'皇朝'的蒸腾速率由3.99 mmol·m-2·s-1显著下降到3.13 mmol·m-2·s-1,同时,其余辣椒品种的蒸腾速率均增加.随着光照强度和CO2浓度增加,CO2加富后,辣椒的最大净光合速率均有不同程度的增加.另外,CO2加富后,直椒和羊角椒的光饱和点和CO2饱和点都有不同程度的增加,螺丝椒的光饱和点和CO2饱和点都有不同程度的降低,所有辣椒品种的CO2补偿点都有不同程度的增加.总之,不同辣椒品种对CO2加富的反应不同,在日光温室辣椒栽培中增施CO2需要对品种加以选择.The net photosynthetic rate, stomatal conductance, transpiration rate, intercellular CO2 concentration and other photosynthetic characteristics of four pepper varieties were measured. Meanwhile,the light response curve and the CO2 response curve of pepper were fitted by the curve model, and the effect of CO2 enrichment on the photosynthetic characteristics of different pepper varieties was clarified. The results showed that the net photosynthetic rate of the three pepper varieties increased significantly after CO2 enriched, except for Hai feng Chang jian, and the net photosynthetic rate of’ Shoulong No. 1 ’was increased most significantly, from 18.62 μ mol · m-2·s-1 to 30.11 μ mol · m-2·s-1, which increased by 61.70%. The stomatal conductance of’Huangchao’and’Shoulong 1 hao’decreased significantly, and that of’Shoulong No. 1 ’decreased most significantly, from 0.53 mol · m-2·s-1 to 0.36 mol · m-2·s-1, which decreased by32.5%. After CO2 enrichment, the intercellular CO2 concentration of the four pepper varieties increased significantly, and the intercellular CO2 concentration of’Meida 108’was significantly increased most, from 240.51 μmol·mol-1 to 610.51 μmol·mol-1,which increased by 153.8%. After the enrichment of CO2, the transpiration rate of’huangchao’decreased significantly from 3.99 mmol · m-2·s-1 to 3.13 mmol · m-2·s-1, while those of other pepper varieties increasing. With light intensity and CO2 concentration increased, the maximum net photosynthetic rate of 4 pepper varieties were also increased at different degrees after CO2 enrichment. In addition, the light saturation point and CO2 saturation point of both’zhi jiao’and’yangjiao jiao’were increased at different degrees, the light saturation point and CO2 saturation point of’luosi jiao’were decreased at different degrees, and the CO2 compensation point of all pepper varieties were increased at different degrees.All the analysis showed that different pepper varieties had different responses to CO2 enr

关 键 词：辣椒 CO2加富 光合参数 光响应曲线 CO2响应曲线 

分 类 号：S641.3[农业科学—蔬菜学]