High Temperature Response Mechanism of Photosynthesis of Grafting Cucumber in Greenhouse Under Long-term Elevated CO2(PDF)
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2015年16
- Page:
- 1-6
- Research Field:
- Publishing date:
Info
- Title:
- High Temperature Response Mechanism of Photosynthesis of Grafting Cucumber in Greenhouse Under Long-term Elevated CO2
- Author(s):
- PAN Lu; CUI Shimao; SONG Yang; KANG Liru; ZHANG Lihong; SUN Shijun
- （College of Agronomy，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010019）
- Keywords:
- cucumber; high temperature; CO2 enrichment; photosynthetic rate; Rubisco activase
- PACS:
- -
- DOI:
- 10.11937/bfyy.201516001
- Abstract:
- Taking grafting cucunmber in greenhouse as materials，the changes and relationship with time of photosynthesis，chlorophyll content，Rubisco activity and Rubisco activase activity of grafting cucumber leaves in greenhouse were studied under long-term elevated CO2 and high temperature，to provide reference for high yield and quality of cucumber cultivation under high temperature in greenhouse，and to discuss greenhouse effect caused by high concentration of CO2 on plant growth.The results showed that compared with the control，long-term elevated CO2 and high temperature led to a remarkable increase in values of the photosynthetic rate，intercellular CO2 concentration，stomatal conductance，transpiration rate，chlorophyll content，Rubisco activity and Rubisco activase activity.Through increasing intercellular CO2 concentration，chlorophyll content and Rubisco activity were increased，and eventually photosynthetic rate was affected under long-term elevated CO2 and high temperature.Photosynthetic rate was increased by removing ‘photosynthetic adaptation’ phenomenon under long-term elevated CO2 and high temperature.
Last Update: 2015-09-01