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首页> 外文期刊>Journal of University of Kuwait >Effect of cadmium and mercury on seed germination and early seedling growth of rice and alfalfa
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Effect of cadmium and mercury on seed germination and early seedling growth of rice and alfalfa

机译：镉和汞对水稻和苜蓿种子发芽及幼苗早期生长的影响

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摘要

The effects of different concentrations (0.05 to 50 mM) of CdCl_2 and HgCl_2 and two concentrations of KCl (50 & 200 mM) on percentage seed germination after 2 and 5 days of incubation, and on seedling growth after 5 days of incubation of rice and alfalfa (cultivars, Al-Ahssa) were investigated. Seed germination and seedling growth were inhibited significantly by CdCl_2 and HgCl_2. Germination inhibition was completely due to heavy metal toxicity, while seedling growth inhibition was mostly due to the toxicity of heavy metals as evident from the effect of KCl. Rice seed germination was more tolerant to heavy metals. In rice, root growth was more sensitive to heavy metals than shoot growth, while the latter was more sensitive to KCl stress.
机译：孵育2天和5天后，不同浓度（0.05至50 mM）的CdCl_2和HgCl_2和两种浓度的KCl（50和200 mM）对种子发芽的百分比以及对水稻和水稻孵育5天后种子生长的影响研究了苜蓿（品种，Al-Ahssa）。 CdCl_2和HgCl_2明显抑制了种子的发芽和幼苗的生长。从氯化钾的作用可以明显看出，抑制发芽完全是由于重金属的毒性，而幼苗生长的抑制则主要是由于重金属的毒性。水稻种子发芽对重金属的耐受性更高。在水稻中，根部生长对重金属的敏感性高于茎秆生长，而后者对KCl胁迫更敏感。

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