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首页> 外文期刊>Journal of Science and Technology of Greenhouse Culture >Effect of silicon nutrition on alleviating cadmium toxicity-induced damage on cucumber (Cucumis sativus L.) at vegetative stage
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Effect of silicon nutrition on alleviating cadmium toxicity-induced damage on cucumber (Cucumis sativus L.) at vegetative stage

机译：硅营养对减轻营养阶段镉（Cucumis sativus L.）对镉毒性的伤害

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Silicon (Si) is a beneficial nutrient for growth of crops such as cucumber. It seems that Si improves antioxidant capacity of plants and reduces damages induced by environmental stresses and metal toxicity. This research aimed to investigate the interaction of Si and cadmium (Cd) on growth, dry matter yield and catalase (CAT) activity, as an antioxidant enzyme, in cucumber. This hydroponic experiment was carried out at the greenhouse of Soilless Culture Research Centre, Isfahan University of Technology, Isfahan, Iran, and was set up in a completely randomized factorial design in triplicates. Treatments consisted of two Cd levels (0 and 5 μM), two Si levels (0 and 1 mM) and two cucumber cultivars (greenhouse cultivar called Negin and field cultivar called Super Dominus). Cadmium had no significant effect on the fresh and dry weight of shoots in both studied cucumber cultivars, while significantly decreased the root fresh and dry weights. Effect of Si on shoot dry weight differed in cultivars. Si nutrition significantly increased shoot dry weight of Super Dominus cultivar, but was not effective on shoot dry weight of Negin cultivar. Catalase activity was affected by the presence of Si and Cd, such that Cd reduced the activity of CAT in both cucumber cultivars. In contrast, CAT activity in Negin cultivar was increased by addition of Si to the nutrient solution. It seems that addition of Si to cucumber growth media can improve antioxidant capacity of plant under Cd toxicity, although this effect is cultivar-dependent. Keywords: Beneficial nutrients, Heavy metals, Antioxidant, Catalase. Full-Text Type of Study: Research | Subject: Fruit Crop Production Received: 2012/11/23 Send email to the article author Related Websites Scientific Publications Commission - Health Ministry Scientific Publications Commission - Science Ministry Yektaweb Company Site Keywords ?????, Academic Journal, Scientific Article, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ????? ??, ???? ?? Vote ? 2015 All Rights Reserved | Journal of Science and Technology of Greenhouse Culture -Isfahan University of Technology
机译：硅（Si）是诸如黄瓜等农作物生长的有益营养素。 Si似乎可以提高植物的抗氧化能力，并减少环境压力和金属毒性引起的破坏。这项研究旨在研究硅和镉（Cd）对黄瓜生长，干物质产量和过氧化氢酶（CAT）活性（作为抗氧化酶）的相互作用。该水培试验是在伊朗伊斯法罕工业大学无土栽培研究中心的温室中进行的，并以一式三份的完全随机因子设计进行了建立。处理包括两个镉水平（0和5μM），两个硅水平（0和1 mM）和两个黄瓜品种（温室品种Negin和田间品种Super Dominus）。镉对两种黄瓜品种的芽鲜重和干重均无显着影响，而根部鲜重和干重均显着降低。硅对品种干重的影响不同。 Si营养显着增加了超级优势品种的茎干重量，但对Negin品种的茎干重量无效。过氧化氢酶的活性受Si和Cd的存在的影响，因此Cd降低了两个黄瓜品种中CAT的活性。相反，通过向营养液中添加Si，可以提高Negin品种的CAT活性。似乎在黄瓜生长培养基中添加Si可以提高植物在Cd毒性下的抗氧化能力，尽管这种作用取决于品种。关键词：有益营养素，重金属，抗氧化剂，过氧化氢酶。全文研究类型：研究|主题：水果作物生产已收到：2012/11/23发送电子邮件给文章作者相关网站科学出版物委员会-卫生部科学出版物委员会-科学部Yektaweb公司网站关键字??????，Academic Journal，Scientific Article，?? ?? ?????? ??，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ?????? ??，???? ??投票吗？ 2015版权所有|温室文化科学技术杂志-伊斯法罕工业大学

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