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Grain Yield, Dry Weight and Phosphorus Accumulation and Translocation in Two Rice ( Oryza sativa L.) Varieties as Affected by Salt-Alkali and Phosphorus

Author

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  • Zhijie Tian

    (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
    Biology Department, Xinzhou Teachers University, Xinzhou 034000, China
    These authors contributed equally to this work and should be considered co-first authors.)

  • Jingpeng Li

    (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
    These authors contributed equally to this work and should be considered co-first authors.)

  • Xinhua He

    (Centre of Excellence for Soil Biology, College of Resources and Environment, Southwest University, Beibei, Chongqing 400715, China)

  • Xueying Jia

    (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Fu Yang

    (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Zhichun Wang

    (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

Abstract

Salt-alkali is the main threat to global crop production. The functioning of phosphorus (P) in alleviating damage to crops from saline-alkaline stress may be dependent on the variety of crop but there is little published research on the topic. This pot experiment was conducted to study if P has any effect on rice ( Oryza sativa L.) yield, dry matter and P accumulation and translocation in salt-alkaline soils. Plant dry weight and P content at heading and harvest stages of two contrasting saline-alkaline tolerant (Dongdao-4) and sensitive (Tongyu-315) rice varieties were examined under two saline-alkaline (light versus severe) soils and five P supplements (P0, P50, P100, P150 and P200 kg ha −1 ). The results were: in light saline-alkaline soil, the optimal P levels were found for P150 for Dongdao-4 and for P100 for Tongyu-315 with the greatest grain dry weight and P content. Two rice varieties obtained relatively higher dry weight and P accumulation and translocation in P0. In severe saline-alkaline soil, however, dry weight and P accumulation and translocation, 1000-grain weight, seed-setting rate and grain yield significantly decreased, but effectively increased with P application for Dongdao-4. Tongyu-315 showed lower sensitivity to P nutrition. Thus, a more tolerant variety could have a stronger capacity to absorb and translocate P for grain filling, especially in severe salt-alkaline soils. This should be helpful for consideration in rice breeding and deciding a reasonable P application in saline-alkaline soil.

Suggested Citation

  • Zhijie Tian & Jingpeng Li & Xinhua He & Xueying Jia & Fu Yang & Zhichun Wang, 2017. "Grain Yield, Dry Weight and Phosphorus Accumulation and Translocation in Two Rice ( Oryza sativa L.) Varieties as Affected by Salt-Alkali and Phosphorus," Sustainability, MDPI, vol. 9(8), pages 1-16, August.
    • Handle: RePEc:gam:jsusta:v:9:y:2017:i:8:p:1461-:d:108694
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    References listed on IDEAS

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    1. Flowers, T.J. & Flowers, S.A., 2005. "Why does salinity pose such a difficult problem for plant breeders?," Agricultural Water Management, Elsevier, vol. 78(1-2), pages 15-24, September.
    2. Zhijie Tian & Jingpeng Li & Xueying Jia & Fu Yang & Zhichun Wang, 2016. "Assimilation and Translocation of Dry Matter and Phosphorus in Rice Genotypes Affected by Salt-Alkaline Stress," Sustainability, MDPI, vol. 8(6), pages 1-14, June.
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    Cited by:

    1. Jinwu Wang & Xiaobo Sun & Yanan Xu & Wenqi Zhou & Han Tang & Qi Wang, 2021. "Timeliness Harvesting Loss of Rice in Cold Region under Different Mechanical Harvesting Methods," Sustainability, MDPI, vol. 13(11), pages 1-18, June.

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