欧李幼苗荧光参数对两种植物生长调节剂的响应
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S723.1

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引进国外先进林业科学技术项目“人工调控荒漠灌丛生态空间构型技术引进”(2015-4-22)


Response of Fluorescence Parameters to Two Different Plant Growth Regulators in Cerasus Humilis Seedlings
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    摘要:

    [目的]探讨多效唑(PP333)和生根粉(GGR6)两种植物生长调节剂对欧李(Cerasus humilis)叶绿素荧光参数的影响,为欧李幼苗的壮苗栽培技术提供科学理论依据。[方法]采用单因素分析法,以1年生欧李幼苗为研究对象,分别设置0,50,100,150和200 mg/L 5个浓度梯度的PP333和GGR6溶液对欧李幼苗进行蘸根处理,采用PMA2500叶绿素荧光仪对荧光参数进行测定。[结果]电子传递效率(ETR)、实际光化学量子效率(ΦPSⅡ)、光化学猝灭(qP)和最大光化学效率(Fv/Fm)在一定浓度范围内,随着PP333和GGR6溶液浓度的增大而增大,非光化学猝灭(qN)随着PP333和GGR6溶液浓度的增大而减小。[结论]欧李幼苗生长发育促进效果最佳的植物生长调节剂为GGR6,最佳浓度为200 mg/L,且同浓度GGR6对欧李幼苗荧光参数促进作用优于PP333

    Abstract:

    [Objective] To study the effects of paclobutrazol(PP333) and rooting powder(GGR6) on chlorophyll fluorescence parameters of Cerasus humilis, in order to provide scientific and theoretical basis for strong seedling cultivation techniques of C. humilis seedlings.[Methods] Single factor analysis was used to study the 1-year-old C. humilis seedlings, which were respectively dipped into PP333 and GGR6 with a concentration of 0, 50, 100, 150 and 200mg/L, and the fluorescence was measured by PMA2500.[Results] With the increasing concentration of PP333 and GGR6, the electron transfer efficiency (ETR), actual photochemical quantum efficiency (ΦPSⅡ), photochemical quenching (qP) and maximum photochemical efficiency (Fv/Fm) were increased, while the non-photochemical quenching(qN) decreased.[Conclusion] The best plant growth regulator was GGR6, and the optimal concentration was 200 mg/L. With the same concentration, the effect of GGR6 on the fluorescence parameters of C. humilis seedlings was better than that of PP333.

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魏亚娟,汪季,党晓宏,贺俊玲,刘宗奇,张波,解云虎.欧李幼苗荧光参数对两种植物生长调节剂的响应[J].水土保持通报,2018,38(5):64-69

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  • 收稿日期:2017-06-14
  • 最后修改日期:2017-07-14
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  • 在线发布日期: 2018-11-10
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