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Comparison of Fine and Coarse Rice Varieties for Nickel Accumulation and Growth Response at Different Levels of Nickel
Clean - Soil Air Water ( IF 1.7 ) Pub Date : 2021-04-03 , DOI: 10.1002/clen.202000336
Shabih Fatma 1 , Muhammad Sabir 1 , Tariq Aziz 1 , Hamaad Raza Ahmad 1 , Muhammad Yaseen 2 , Muhammad Zia‐ur‐Rehman 1 , Khalid Rehman Hakeem 3
Affiliation  

The differential growth response and nickel (Ni) accumulation by two rice varieties grown in Ni-contaminated soil are investigated. Soil is contaminated with Ni at different levels viz. control (0), 7, 15, 22, 30, and 38 mg kg−1 soil. Two rice varieties viz. Basmati-2000 (fine variety) and KSK-133 (coarse variety) are grown in pots containing Ni-contaminated soil. The plants are harvested at four growth stages with an interval of 15 days. Harvested plants are washed with distilled water to remove aerial deposition. Harvested plants are oven-dried, weighed, grinded, and digested with di-acid mixture. The digested samples are analyzed for Ni, zinc (Zn), and manganese (Mn) concentration. The results indicate that the maximum level of Ni (38 mg kg−1) inhibits the shoot and root growth. The maximum shoot and root dry weights are observed at lower level of Ni, that is, 7 mg kg−1. The concentration of Ni in plants increases with increasing Ni levels compared to control while the concentration of Zn and Mn decreases with increasing Ni levels. The maximum concentrations of all elements are recorded at the first harvest which gradually decrease in the subsequent harvests. It is concluded that Basmati-2000 is tolerant to Ni toxicity compared to KSK-133.

中文翻译:

不同镍水平下细稻和粗稻品种镍积累和生长响应的比较

研究了在镍污染土壤中生长的两个水稻品种的差异生长响应和镍 (Ni) 积累。土壤被不同程度的镍污染,即。对照 (0)、7、15、22、30 和 38 mg kg -1土壤。两个水稻品种即。Basmati-2000(优良品种)和 KSK-133(粗品种)在含有镍污染土壤的盆中种植。植物在四个生长阶段收获,间隔为 15 天。收获的植物用蒸馏水冲洗以去除空气沉积物。将收获的植物烘干、称重、研磨并用二酸混合物消化。分析消解样品的 Ni、锌 (Zn) 和锰 (Mn) 浓度。结果表明,Ni(38 mg kg -1) 抑制芽和根的生长。在较低水平的 Ni,即 7 mg kg -1下观察到最大地上部和根干重。与对照相比,植物中 Ni 的浓度随着 Ni 含量的增加而增加,而 Zn 和 Mn 的浓度随着 Ni 含量的增加而降低。所有元素的最大浓度在第一次收获时记录,在随后的收获中逐渐降低。结论是,与 KSK-133 相比,Basmati-2000 对 Ni 毒性具有耐受性。
更新日期:2021-06-04
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