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| DOI：10.13522/j.ggps.cnki.20180351 |
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| Growth and Yield of Tomato as Impacted by Salinity Stress |
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CAO Heli, DING Risheng*, XUE Fulan
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Center for Agricultural Water Research in China，China Agricultural University， Beijing 100083， China
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| Abstract: |
| 【Objective】Soil salinity and water stress are common abiotic stress affecting crop growth, and this paper examined the response of growth and yield of tomato to soil salinity. 【Method】The experiments were conducted in pots and considered three water treatments: sufficient irrigation to keep soil water at the field capacity (M1), irrigating with 1/2 of water used in M1 (M2), re-watering to the field capacity after drought (M3); and two salinity treatments: free of salinity (S1) and salinity stress with 0.3% salt content (S2); each treatment had four replicas. In each treatment, we measured the dry matter and yield of the tomato. 【Result】 Compared with W1, W2 significantly reduced the water use efficiency, dry matter, water content in plant, leaf weight, yield, and fruit weight. W3 reduced water consumption and the leaf to stem ratio but increased fruit set rate, with no effect on dry weight to fresh-dried weight ratio. Salinity stress reduced water use efficiency, plant dry weight, fresh-dry matter ratio, leaf-stem ratio, total fruit yield, fresh and dry weight. Water stress significantly inhibited leaf growth and fruit development, and salt stress reduced plant growth and yield formation. 【Conclusion】 Re-watering after drought without salinity benefited crop growth and could be used as an optimal deficit irrigation method. |
| Key words: water and salt stress; tomato; growth and development; water use efficiency; yield |
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