不同水稻品种对五氯酚钠的吸收累积特征
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X173

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国家自然科学基金面上项目(42177028)和山东省高等学校青创人才引育计划(DC2000000961)资助。


Uptake and Accumulation Characteristics of Sodium Pentachlorophenate (PCP-Na) in Different Rice Varieties
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    摘要:

    本文采用温室水培试验,研究了15种水稻品种对五氯酚钠(PCP-Na)的吸收差异,进而明确水稻对其体内PCP-Na的代谢能力。结果表明,水培浓度显著影响水稻对PCP-Na的吸收行为,且在胁迫的1 ~ 2 d内水稻根部的PCP-Na累积浓度达到最大值。粳稻、籼稻、杂交稻品种的根部累积浓度分别为399.47 ~ 603.39、198.67 ~ 315.05、186.16 ~ 271.17 mg/kg;茎叶累积浓度分别为6.32 ~ 10.80、2.09 ~ 8.28、2.53 ~ 3.19 mg/kg。扬粳687号(粳稻)、农香24号(籼稻)、泰两优217号(杂交稻)是PCP-Na耐受性最强的三大水稻品种。研究还发现,水稻本体对PCP-Na具有较强的降解能力,水稻根部的PCP-Na在14 d内从355.21 mg/kg下降至2.59 mg/kg,茎叶内的PCP-Na在11 d内从14.55 mg/kg下降至0.098 mg/kg。本研究有助于理解水稻对PCP-Na的吸收累积特征和降解能力,同时对水稻的安全生产和耐性育种提供一定的依据。

    Abstract:

    In this study, the uptake differences of PCP-Na in 15 rice varieties was investigated by greenhouse hydroponics experiment, and then the metabolic ability of rice to PCP-Na was clarified. The results showed that hydroponic concentration significantly affected the uptake behavior of rice to PCP-Na, and the maximum concentration of PCP-Na absorbed by roots was reached at 1–2 days incubation. The cumulative concentration in roots of Japonica, Indica and hybrid rice varieties were 399.47–603.39, 198.67–315.05, 186.16–271.17 mg/kg, and 6.32–10.80, 2.09–8.28 and 2.53–3.19 mg/kg in stems and leaves, respectively. Yangjing 687 (Japonica), Nongxiang 24 (Indica), and Tailiangyou 217 (hybrid) were the three most tolerant rice varieties to PCP-Na. Rice ontogeny had a strong metabolic capacity for PCP-Na, which decreased from 355.21 to 2.59 mg/kg in 14 days in roots and from 14.55 to 0.098 mg/kg in 11 days in stems and leaves. This study contributes understand the uptake and accumulation characteristics and degradation capacity of PCP-Na in rice, and provide some basis for safe production and tolerance breeding of rice.

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武桄旗,苏傲雪,李学宁,谢广雪,宋欣录,徐艳.不同水稻品种对五氯酚钠的吸收累积特征[J].土壤,2024,56(2):382-387. WU Guangqi, SU Aoxue, LI Xuening, XIE Guangxue, SONG Xinlu, XU Yan. Uptake and Accumulation Characteristics of Sodium Pentachlorophenate (PCP-Na) in Different Rice Varieties[J]. Soils,2024,56(2):382-387

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  • 收稿日期:2023-05-25
  • 最后修改日期:2023-07-11
  • 录用日期:2023-07-14
  • 在线发布日期: 2024-05-22
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