Photosynthetica 2015, 53(4):609-612 | DOI: 10.1007/s11099-015-0118-1

Selenium improves photosynthesis and protects photosystem II in pear (Pyrus bretschneideri), grape (Vitis vinifera), and peach (Prunus persica)

T. Feng1,*, S. S. Chen1, D. Q. Gao1, G. Q. Liu1, H. X. Bai1, A. Li1, L. X. Peng1, Z. Y. Ren1
1 College of Horticulture and Landscape, Tianjin Agricultural University, Xiqing, Tianjin, China

The effects of selenium on photosynthesis and Chl fluorescence in pear, grape, and peach were analyzed. The foliar spray of amino acid-chelated selenium solution was performed soon after fruit setting, totally six times, with an interval of ten days. After seven days from the last spray, the leaves in the middle of shoots were examined. Foliar spray of selenium increased the net photosynthetic rate in pear, grape, and peach. In contrast, the treatment decreased stomatal conductance, transpiration rate, and substomatal CO2 concentration in all the three species. The selenium treatment improved the maximum quantum yield of PSII, effective quantum yield of PSII, and photochemical quenching in all three species. Conversely, the selenium treatment reduced nonphotochemical quenching in all three species. We suggested that selenium can improve photosynthesis and protect PSII in fruit crops.

Additional key words: foliar feeding; fruit tree; gas exchange; intercellular CO2 concentration

Received: June 19, 2014; Accepted: December 5, 2014; Published: December 1, 2015  Show citation

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Feng, T., Chen, S.S., Gao, D.Q., Liu, G.Q., Bai, H.X., Li, A., Peng, L.X., & Ren, Z.Y. (2015). Selenium improves photosynthesis and protects photosystem II in pear (Pyrus bretschneideri), grape (Vitis vinifera), and peach (Prunus persica). Photosynthetica, 53(4), 609-612. doi: 10.1007/s11099-015-0118-1
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