苹果发酵液对Fe^2＋的螯合能力及对缺铁平邑甜茶幼苗的影响  

Effects of apple fermentation broth on chelating capability of Fe^(2+) and iron-deficient Malus hupehensis var.pingyiensis seedlings

作　　者：张乔丽[1] 戚亚平[1,2] 邵微[1] 高利梅[1] 姚允聪[1] 姬谦龙[3] 

机构地区：[1]北京农学院,植物科学技术学院,北京102206 [2]内蒙古准格尔旗第一中学,内蒙古010400 [3]北京农学院,生物科学与工程学院,北京102206

出　　处：《植物营养与肥料学报》2013年第2期517-522,共6页Journal of Plant Nutrition and Fertilizers

基　　金：国家科技支撑重大项目(2008BAD92B08);北京农学院基础科学基金项目(06-ZD-JW-05);北京市属市管高等学校人才强教计划项目(PHR20110515)资助

摘　　要：本试验研究了苹果发酵液对二价铁的螯合能力,并以平邑甜茶(Malus hupehensis var.pingyiensis)幼苗为试材,研究了平邑甜茶幼苗根系对铁的吸收效应以及发酵液和FeSO4混合施用后,对缺铁平邑甜茶幼苗株高和干粗的增长率、鲜、干重根冠比、全量铁与活性铁含量、叶绿素及净光合速率的影响。结果表明,当苹果发酵液pH为5.5时,对Fe2+的螯合能力最强,其与FeSO4混合根施后,能促进平邑甜茶幼苗根系对铁的吸收;发酵液300倍稀释液和FeSO4混合处理对缺铁平邑甜茶幼苗株高和干粗的增长率、鲜、干重根冠比、活性铁含量、叶绿素含量及净光合速率的提高最为显著。由试验结果推论,苹果发酵液具有较强的Fe2+螯合能力,有利于苹果幼苗对Fe2+的吸收,并能有效地改善缺铁植株叶片的光合效率。The chelating ability to Fe^2 ＋ of apple fruit fermentation broth was tested. Both normal and iron-deficient Malus hupehensis var. pingyiensis seedlings were used to study the effects of different treatments of broth, FeSO4 and blending solution on the growth rate of height and stem width, root-shoot ratio of dry weight and fresh weight, the contents of total amount of iron, active iron, chlorophyll, and net photosynthetic rate. The results show that the apple fruit fermentation broth has significant iron chelating activity in solution with pH 5.5. When the broth is blended with FeSO4 and fertilized to root, the absorption of iron in Malus hupehensis var. pingyiensis seedlings is promoted. Furthermore, the growth rate of height and stem width, root-shoot ratio of dry weight and fresh weight, active iron, content of chlorophyll and net photosynthetic rate in iron-deficient Malus hupehensis var. pingyiensis seedlings the apple improves are significantly increased under＇ the 300 - fold diluted broth mixed with FeSO4. These results suggest that fruit fermentation broth has high ability on iron chelating, which makes the absorption of iron easier and photosynthetic efficiency of leaves in iron-deficient plants effectively.

关 键 词：苹果发酵液 螯合铁 平邑甜茶 

分 类 号：S661.1[农业科学—果树学]