2种桉树插穗生根过程中营养元素含量的变化 |
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引用本文: | 姚瑞玲,项东云,陈健波,梁小春.2种桉树插穗生根过程中营养元素含量的变化[J].安徽农业科学,2010,38(33):18992-18993. |
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作者姓名: | 姚瑞玲 项东云 陈健波 梁小春 |
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作者单位: | [1]广西林业科学研究院,广西南宁530002 [2]广西大学林学院,广西南宁530004 |
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基金项目: | 国家"948"项目,广西林科院业务费项目 |
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摘 要: | 目的]研究2种桉树插穗生根过程中营养元素含量的变化。方法]以扦插生根困难的邓恩桉(Eucalyptus dunnii)和尾巨桉无性系U9(E.urophylla×E.Grandis)为试验材料,研究了2种桉属树种插穗生根过程中营养元素含量的变化。结果]扦插生根过程中,2种桉属树种插穗中的大量元素及Cu、Mn、B含量均呈下降趋势,而Zn、Fe含量呈上升趋势。与U9相比,扦插前邓恩桉插穗中N、Cu、B含量明显偏低;而在愈伤期和生根期,邓恩桉插穗中除Zn含量偏高外,其他4种微量元素含量均与U9相近。结论]N、Cu、B这3种元素对邓恩桉插穗生根潜在的影响较大。
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关 键 词: | 邓恩桉 尾巨桉无性系 扦插 大量元素 微量元素 |
Variation of Nutrient Elements Content in Rooting Process of Two Eucalyptus Species Cuttings |
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Institution: | YAO Rui-ling et al (Guangxi Forestry Research Institute, Nanning, Guangxi 530002) |
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Abstract: | Objective] To study the variation of nutrient elements content in rooting process of two Eucalyptus species cuttings.Method] The study was carried out with Eucalyptus dunnii and E.urophylla×E.Grandis(U9) as materials.Result] There was a downtrend of the major elements,Cu,Mn and B contents in the two species in the process of rooting,however,and an uptrend of the Zn and Fe contents of them.Compared with U9,the N,Cu and B contents of E.dunnii cuttings were less before cutting,whereas except for the more content of Zn,the other 4 trace elements contents of E.dunnii cuttings approached to that of U9 in the callus and rooting periods.Conclusion] It was preliminarily concluded that N,Cu and B played a potentially important role in the rooting of E.dunnii cuttings by the comprehensive analysis. |
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Keywords: | Eucalyptus dunnii E urophylla×E Grandis Cutting Major elements Trace elements |
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