| Effect of irrigation amount on chlorophyll fluorescence and photo-protection characteristics of flag leaf of winter wheat in Huang-Huai-Hai region |
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| DOI：10.7606/j.issn.1000-7601.2014.01.030 |
| Key Words: winter wheat irrigation chlorophyll fluorescence characteristics photo-protection |
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| Abstract: |
| A field experiment with five varieties of winter wheat in Huang-Huai-Hai region was carried out to evaluate the effect of irrigation amount on the chlorophyll fluorescence characteristics of flag leaf. The results showed that the reduction of the irrigation frequency resulted in lower chlo
rophyll a+b (Chla+b) content, chlorophyll a/b, carotenoids (Car) content, PSⅡ maximum photochemical efficiency (Fv/Fm), photochemical quenching (qP), and light use efficiency (LUE), while it increased the initial fluorescence (Fo). The non-photochemical quenching (NPQ) first increased and then decreased. Physiological responses of winter wheat varied with irrigation frequency. Aikang 58 and Zhengmai 366 were more adaptive to a broader range
of environments than Zhoumai 18 and Yumai 49 were, partially due to their high light use efficiency under different irrigation conditions. |
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