周余华 顾敏敏

摘要 [目的]为深入研究金叶冬青的耐涝性提供基础理论。[方法] 以2年生金叶冬青扦插苗为试材，盆栽模拟淹水胁迫，对金叶冬青叶片形态及生理生化指标进行研究。[结果]淹水对金叶冬青的叶色和生理生化指标有较大影响，随着淹水胁迫时间的延长，金叶冬青叶片颜色变暗;叶绿素含量处于平缓—略增加的状态;叶片的初始荧光（Fo）明显下降，最大荧光（Fm）、PSⅡ最大光化学效率Fv/Fm、PSⅡ潜在光化学活性Fv/Fo均呈降低趋势;可溶性糖、可溶性蛋白和丙二醛（MDA）含量逐渐上升。[结论]金叶冬青对淹水的适应能力较强。

关键词 淹水;金叶冬青;色差;生理生化指标

中图分类号 Q-945.78  文献标识码 A

文章编号 0517-6611（2021）12-0107-05

doi：10.3969/j.issn.0517-6611.2021.12.027

开放科学（资源服务）标识码（OSID）：

Effects of Flooding on Color Difference and Physiological and Biochemical Indexes of Ilex cornuta ‘Oigon Leaves

ZHOU Yu hua， GU Min min （Jiangsu Polytechnic College of Agriculture and Forestry，Zhenjiang，Jiangsu 212400）

Abstract [Objective]To provide a basic theory for further study on waterlogging tolerance of Ilex cornuta‘Oigon. [Method]Taking two years old Ilex cornuta ‘Oigon cuttings as test materials， the morphological， physiological and biochemical indexes of Ilex cornuta‘Oigon cuttings were studied by pot experiments under simulated flooding stress. [Result] The results showed that the effects of waterflooding on leaf color and physiological and biochemical indexes were significant. With the prolongation of flooding time， the color of its leaves became dark， and the content of chlorophyll was in a mild and slightly increased state. The initial fluorescence Fo of leaves decreased obviously， and the maximum fluorescence Fm， PSII maximum photochemical efficiency Fv/Fm， PSII potential photochemical activity Fv/Fo decreased obviously. The content of soluble sugar， soluble protein and MDA increased gradually.[Conclusion]It is indicated that the adaptability of it to flooding is stronger.

Key words Water flooding;Ilex cornuta ‘Oigon;Chromatic aberration;Physiological and biochemical indexes

金葉冬青（Ilex cornuta ‘Oigon）是冬青属常绿小灌木，单叶互生，叶缘疏生小刺。一年四季叶片都保持金黄色，适用于花园、广场和其他绿化区域内种植。金叶冬青作为新推出的一个花园色叶植物品种，耐寒，耐修剪，可以修剪成球状、塔状、层状等特殊造型，在造景方面可以和其他植物相配置，可丛植或孤植，是具有良好发展前景的常绿彩叶植物[1]。

目前被发现和引进的冬青属植物在我国有25%左右。在我国药用价值是冬青属植物现阶段的主要研究方向[2]。尽管近年来植物界对冬青属植物的园林应用价值较为关注，但仍有较多不足之处。能够科学并合理地进行园林应用的植物品种只有冬青、豆瓣冬青等少数品种，与国外相比较，对冬青属植物的研究仍远远不够[3]。……