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首页> 外文期刊>International Journal of Biodiversity and Conservation >Heavy metals (Cd, Ni and Pb) pollution effects on cassava (Manihot esculenta Crantz)
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Heavy metals (Cd, Ni and Pb) pollution effects on cassava (Manihot esculenta Crantz)

机译：重金属（镉，镍和铅）对木薯的污染影响（Manihot esculenta Crantz）

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摘要

The response of crops to heavy metals is important to plant breeders working on marginal environments. Environmentalists need such knowledge for environmental quality assessment. Consequently, a study was carried out to determine the effect of heavy metals (Cd, Ni and Pb) stress on cassava in a greenhouse. The treatments comprised five improved cassava varieties (TME 419, TMS 98/0505, TMS 98/0510, TMS 98/0581 and TMS 97/2205), three heavy metals (Cd, Ni, Pb) and four heavy metal application rates (0, 100, 200 and 300 mg kg-1). Heavy metals Cd, Ni and Pb reduced cassava sprouting at four weeks after planting (WAP). The stem girth, root length, root weight and dry matter yield of cassava were also negatively affected by the heavy metals at 12 WAP. The extent of the influence of the heavy metals on cassava was found to be dependent on the specific heavy metal and cassava variety. Generally, the ability of the heavy metals to affect the growth indices studied was found to be in the order: Ni > Cd > Pb. Of the five improved cassava varieties studied, TMS 98/0505 was found to be the most tolerant to the three heavy metals combined.
机译：作物对重金属的反应对在边缘环境中工作的植物育种者很重要。环保主义者需要这种知识来进行环境质量评估。因此，进行了一项研究以确定重金属（Cd，Ni和Pb）胁迫对温室木薯的影响。处理包括五个改良木薯品种（TME 419，TMS 98/0505，TMS 98/0510，TMS 98/0581和TMS 97/2205），三种重金属（Cd，Ni，Pb）和四种重金属施用率（0 ，100、200和300 mg kg-1）。重金属Cd，Ni和Pb减少了种植后四周（WAP）的木薯发芽。木薯的茎周长，根长，根重和干物质产量也受到12 WAP时重金属的不利影响。发现重金属对木薯的影响程度取决于特定的重金属和木薯品种。通常，发现重金属影响所研究的生长指数的能力按以下顺序排列：Ni> Cd> Pb。在研究的五个改良木薯品种中，TMS 98/0505被发现对三种重金属的耐受性最高。

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