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首页> 外文期刊>Journal of Science and Technology of Greenhouse Culture >Responses of quince (Cydonia oblonga Mill.), pear and crataegus rootstocks to Fe-deficiency stress in soilless Culture
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Responses of quince (Cydonia oblonga Mill.), pear and crataegus rootstocks to Fe-deficiency stress in soilless Culture

机译：在无土栽培中，木瓜（Cydonia oblonga Mill。），梨和山楂砧木对铁缺乏胁迫的响应

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Iron (Fe) chlorosis is an important nutritional problem in quince trees. But, quince rootstocks differ in their tolerance to Fe deficiency in calcareous soils. Tolerance to Fe deficiency of seedling rootstocks of quince, pear and crataegus and clonal rootstock of quince A was evaluated by exposure to two levels of Fe (3 and 50 μM) in the presence or absence of 10 mM bicarbonate in soilless culture. According to results of this study different rootstocks had various responses to Fe deficiency stress. In Fe-deficiency stress conditions, rootstocks of pear and crataegus showed the lowest severity of chlorosis among the studied rootstocks and had the highest plant height, number of leaves and Fe concentration in leaves and roots. Activity of guaiacol peroxidase enzyme in these two Fe-tolerant rootstocks was less affected by Fe deficiency. In contrast, seedling rootstock of quince showed the highest severity of chlorosis along with the decrease in activity of guaiacol peroxidase (-74.19%) and ascorbate peroxidase (-52.35%). Quince A rootstock showed better performance than seedling rootstock of quince under Fe deficiency. Results also revealed that despite sufficient Fe level in the media (50 μM), seedling rootstocks exposed to bicarbonate showed Fe deficiency symptoms. In general, it was found out that rootstocks of pear and crataegus were more tolerance to Fe deficiency stress Keywords: Fe deficiency, Chlorosis, Seedling rootstock, Clonal rootstock, Bicarbonate, Calcareous soil Full-Text Type of Study: Research | Subject: Container Production and Growth Media Received: 2015/03/3 | Accepted: 2015/03/3 | Published: 2015/03/3 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：铁（Fe）的萎黄是木瓜的重要营养问题。但是，木瓜砧木对钙质土壤中铁缺乏的耐受性不同。通过在无土栽培中存在或不存在10 mM碳酸氢盐的情况下，暴露于两种水平的Fe（3和50μM）来评估木瓜，梨和山楂的幼苗根茎和木瓜A的克隆根茎对铁缺乏的耐受性。根据这项研究的结果，不同的砧木对缺铁胁迫有不同的反应。在缺铁胁迫条件下，梨和山楂的砧木在所研究的砧木中的萎黄病严重程度最低，并且具有最高的株高，叶片数和叶片和根中的铁含量。这两种耐铁性砧木中的愈创木酚过氧化物酶的活性受铁缺乏的影响较小。相比之下，木瓜的幼苗砧木表现出最高的萎黄病严重程度，同时愈创木酚过氧化物酶（-74.19％）和抗坏血酸过氧化物酶（-52.35％）的活性降低。在缺铁条件下，木瓜砧木表现出比木瓜幼苗砧木更好的性能。结果还显示，尽管培养基中的铁含量足够（50μM），但暴露于碳酸氢盐的幼苗砧木仍显示出铁缺乏症状。总的来说，人们发现梨和山楂的砧木对缺铁胁迫具有更大的耐受性。关键词：缺铁，绿化，幼苗砧木，无性砧木，碳酸氢盐，石灰质土壤主题：集装箱生产和增长媒体收到时间：2015/03/3 |接受时间：2015/03/3 |发布时间：2015/03/3向文章作者发送电子邮件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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