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| DOI：10.13522/j.cnki.ggps.2017.12.003 |
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| The Effects of Aeration Irrigation on Chlorophyll Fluorescence in Blueberry Cultivated in Greenhouse |
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QIAO Jianlei, ZHANG Chong, XU Jia, WANG Chenghan, ZHAO Zhenying, XIAO Yingkui
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College of Horticulture, Jilin Agricultural University, Changchun 130118, China;College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
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| Abstract: |
| We took a three-year old blueberry as a model plant and studied the effects of aeration irrigation on chlorophyll fluorescence in the plant leaves. Irrigation with different aeration frequencies were examined and the response of the chlorophyll fluorescence parameters were analyzed and compared with those under conventional drip irrigation. The results showed that the maximum fluorescence yield (Fm) of PSⅡreaction center of blueberry leaves increased with aeration irrigation, and that different aeration frequencies had significant effect on the maximum fluorescence yield in the leaves. Compared with conventional drip irrigation, aeration irrigation improved the potential photochemical activity (Fv/F0) and maximal photochemical efficiency (Fv/Fm) of PSⅡreaction center. Although the potential photochemical activity increased slightly in the early stage under aeration irrigation, the difference became increasingly noticeable as plant grew. Aeration irrigation also improved the light capture efficiency (Fv′/Fm′), actual photochemical efficiency (Yield) and light chemical quenching coefficient (qP) of PSⅡreaction center. However, its effect on coefficient of non-photochemical quenching (NPQ) was insufficient and there was no significant difference between the aeration irrigation and conventional drip irrigation (P>0.05) during the testing period. In addition, an appropriate aeration frequency could improve the environment for root growth and nutrient acquisition. |
| Key words: blueberry; sunlight greenhouse; drip irrigation; chlorophyll; fluorescence characteristics |
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