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通过3个不同的实验研究了Al胁迫条件下Ca对绿豆幼苗上胚轴的生长、电解质渗漏率、丙二醛(MDA)含量、Al含量及多胺积累的影响。结果显示,Al处理明显抑制上胚轴的生长,增加其电解质渗漏率和MDA含量,降低Ca含量和SOD活性,诱导多胺特别是腐胺的积累;增加钙的供应可以减轻Al对植物的毒害,降低电解质渗漏率、MDA和Al含量,提高Ca含量和SOD活性;而外加6-BA对上胚轴的生长没有影响。表明Ca缺乏是Al毒害机理之一。
The effects of Ca2 + on the growth of hypocotyls, electrolyte leakage rate, malondialdehyde (MDA) content, Al content and accumulation of polyamines in mung bean seedlings were studied by three different experiments. The results showed that Al treatment significantly inhibited the growth of the epicotyl, increased its electrolyte leakage rate and MDA content, reduced the Ca content and SOD activity, and induced the accumulation of polyamines, especially putrescine. Increasing the supply of calcium reduced the effect of Al on plant Poisoning, reducing electrolyte leakage rate, MDA and Al content, increasing Ca content and SOD activity; while adding 6-BA had no effect on the growth of epicotyls. Ca deficiency is one of the mechanisms of Al poisoning.