| Cite this article: | 高凡,郑然,董少康,等.不同灌溉模式下草莓对水分胁迫的生理响应研究[J].灌溉排水学报,0,():-. |
| Gaofan,郑然,Dong Shaokang,et al.不同灌溉模式下草莓对水分胁迫的生理响应研究[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Physiological Response of Strawberry to Water Stress under Different Irrigation Patterns |
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Gaofan1, 郑然1, Dong Shaokang1, Li Yuzhong2, Guo jiaxuan3, Shen Yuanyue4, Li Xingliang4
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1.Beijing University of Agriculture;2.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences;3.Beijing University of Agriculture;4.Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences
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| Abstract: |
| 【Objective】Strawberry is among the most widely horticultural plants in northern China. Water stress is one of the major environmental factors influencing crop growth, development and yield processes. Here, we focused on the physiological response of strawberry (cv. Honeoye) to water stress under different irrigation patterns. 【Method】The field trial was a complete randomized design with three drip irrigation treatments: Partial root-zone irrigation (PRI), deficit irrigation (DI) and full irrigation (FI); and the PRI and DI treatments were imposed of light stress (LS), medium stress (MS) and severe stress (SS). 【Result】The chlorophyll a (Chl a) and chlorophyll b (Chl b) of strawberry leaf from PRI and DI treatments were significantly lower than those from FI treatments, and have been declining with the growing intensity of water stress. Compared to DI, chlorophyll of leaf was relatively higher in PRI. With the increase of water stress degree, the transpiration rate of strawberry leaf in DI and PRI decreased by 35.2-44.7% and 21.0-47.0% respectively. However, the net photosynthetic rate exhibited little changes. At MS and SS levels, the WUE of DI and PRI was significantly higher than that of FI, with 101.8-117.9% and 68.8-149.8% respectively. The proline (Pro) accumulation of strawberry leaf in PRI was considerably higher than that in FI (19.0~26.0%) at different water stress levels, and which was also obviously higher than that in DI at both LS and MS levels. Furthermore, only at SS level, the strawberry leaf in PRI accumulated much more malondialdehyde (MDA) than that in FI (30.2%), while at both MS and SS levels, the MDA accumulation of strawberry leaf in DI was remarkably higher than that in FI, which were 34.3% and 56.3%, respectively. 【Conclusion】Therefore, the osmotic adjustment ability and the drought resistance ability of strawberry in PRI were much stronger than those in DI, and PRI-MS was considered to be a better water-saving irrigation strategy for strawberries. |
| Key words: Strawberry; Water stress; Partial root-zone irrigation; Deficit irrigation; Physiological response |
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