| Effect of water and nitrogen interaction on chlorophyll content and photosynthetic rate of spring wheat leaves |
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| DOI：10.7606/j.issn.1000-7601.2012.06.15 |
| Key Words: water and nitrogen interaction spring wheat chlorophyll photosynthetic rate |
| Author Name | Affiliation | | DONG Bo | Dryland Agriculture Insitute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Faculty of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Xucheng | Dryland Agriculture Insitute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | ZHANG Dongwei | Dryland Agriculture Insitute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | GUO Tianwen | Dryland Agriculture Insitute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Key Laboratory of Northwest Droughu Crop Cultivation and Farming of Chinese Ministry of Agriculture, Lanzhou, Gansu 730070, China | | YU Xianfeng | Dryland Agriculture Insitute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Key Laboratory of Northwest Droughu Crop Cultivation and Farming of Chinese Ministry of Agriculture, Lanzhou, Gansu 730070, China |
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| Abstract: |
| A random block design experiment with three levels was conducted to explore the effect of water/nitrogen interaction on the chlorophyll content and photosynthetic rate of spring wheat variety Ningchun 4. The results showed that suitable
nitrogen could evidently increase the chlorophyll content and
photosynthetic rate. Under drought and good water conditions, the Pn, IWUE of high-nitrogen level was higher than the other nitrogen levels. Under the condition of three
nitrogen levels, with the aggravated of water stress, the Chlorophyll content, carotenoid, IWUE and Pn demonstrated a trend of increasing. Correlation analysis showed that there was a significantly linear positive correlation between
IWUE and Pn, but negative with Tr and Gs The relationship between Pn and Gs, IWUE were different in various treatments. |
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