›› 2018, Vol. 47 ›› Issue (1): 13-17.DOI: 10.3969/j.issn.1009-7791.2018.01.003

• Plant physiology, biochemistry and molecular biology • Previous Articles     Next Articles

Assessing Adaptability of Camellia euphlebia under Different Light Intensity

XUE Ke-na,XUAN Zu-ying,CHEN Si-ning,WEN Shan-na,HUANG Yong-fang   

  1. (1.Foshan Municipal Forestry Research Institute, Foshan 528222, Guangdong China; 2.College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, Guangdong China)
  • Received:2017-11-01 Revised:2017-11-19 Online:2018-03-30 Published:2018-03-30
  • Contact: HUANG Yong-fang

显脉金花茶对不同光照强度的适应性研究

薛克娜,玄祖迎,陈思宁,文珊娜,黄永芳   

  1. (1.佛山市林业科学研究所,广东 佛山 528222;2.华南农业大学林学与风景园林学院,广东 广州 510642)
  • 通讯作者: 黄永芳
  • 作者简介:薛克娜,硕士,教授级高级工程师,从事城市林业和木本花卉研究。
  • 基金资助:
    广东省林业科技创新项目(2016KJCX007)

Abstract: To assess adaptability of Camellia euphlebia seedlings at different light intensity, 2-year old cutting seedlings were used to test physiological indexes such as contents of chlorophyll, contents of soluble protein and sugar, malondialdehyde content(MDA), nutrients(N, P, K) and antioxidant activities of SOD and POD. The results showed that with the increase of light intensity, contents of chlorophyll a, b and total chlorophyll were decreased, and there was significant difference among different light intensity, while difference of chlorophyll a/b was not significant. The antioxidant activities of SOD were increased with the increased of light intensity, and SOD activity with full light treatment was significantly different from 10% and 20% light intensity treatments (P<0.05). POD activity of 40% light intensity was significantly higher than that of 10% light intensity (P<0.05). The content of MDA of full light treatment was significantly higher than the other treatments (P<0.05). Content of N of full light was significantly higher than those of 20% and 40% light intensity (P<0.05), Contents of P were significantly different among different treatments (P<0.05), but the difference of K contents was not significant. There was significant difference of soluble protein content among different light intensity (P<0.05), while the difference of soluble sugar content was not significant. Net growth of height and ground diameter of C. euphlebia seedling under 20% light intensity were highest, which showed that the seedlings grew better under 20% light intensity.

Key words: Camellia euphlebia, light intensity, adaptability, physiology, growth

摘要: 以显脉金花茶Camellia euphlebia二年生扦插苗为材料,研究不同光照强度(10%、20%、40%、全光照)下其叶片叶绿素含量、保护酶(SOD和POD)活性、可溶性蛋白、可溶性糖、丙二醛(MDA)含量、营养元素含量(氮、磷、钾)以及苗木的生长量。结果表明,随着光照强度的增强,叶片叶绿素a、叶绿素b和总叶绿素含量持续下降,不同光照强度下叶片叶绿素a、叶绿素b和叶绿素总量存在差异,而叶绿素a/b的差异不显著。叶片SOD活性随光照强度增加而逐步上升,全光照处理的SOD活性显著高于10%和20%光照处理(P<0.05);40%光照条件下的叶片POD活性与全光照和20%光照处理无显著差异,但显著高于10%光照处理(P<0.05)。全光照条件下叶片MDA含量显著高于其他光照处理(P<0.05)。营养元素方面,全光照处理的氮含量显著高于20%和40%光照处理(P<0.05);不同光照处理的叶片磷含量差异显著(P<0.05),而钾含量无显著差异。不同光照处理间叶片的可溶性蛋白含量存在显著差异(P<0.05),可溶性糖含量差异不显著。显脉金花茶在20%光照强度下有较高的苗高和地径生长量。综合分析,显脉金花茶扦插苗在20%光照强度下生长较佳。

关键词: 显脉金花茶, 光照强度, 适应性, 生理, 生长

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