植物生理生化与分子生物学

遮阴对石笔木苗木生长和保护酶活性的影响

  • WEN Shan-na ,
  • TIAN Xue-qin ,
  • CHEN Xue-mei ,
  • XUE Ke-na ,
  • HE Jian-qiang
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  • (佛山市林业科学研究所(佛山植物园),广东 佛山 528222)

收稿日期: 2022-10-10

  录用日期: 2023-02-14

  网络出版日期: 2023-05-08

基金资助

广东省林业科技创新项目(2018KJCX047)

Effect of Shading on Growth and Protective Enzyme Activities of Tutcheria championi Seedlings

  • 文珊娜,田雪琴,陈雪梅,薛克娜,何健强
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  • (Foshan Institute of Forestry (Foshan Botanical Garden), Foshan 528222, Guangdong China)

Received date: 2022-10-10

  Accepted date: 2023-02-14

  Online published: 2023-05-08

摘要

为探讨石笔木Tutcheria championi苗木对遮阴环境的适应性,以全光照(无遮阴覆盖)为对照,研究遮阴30%、50%和70%对2年生石笔木苗生长和生理特性的影响。结果表明,全光照下石笔木苗木生长较为健壮,其苗高、地径生长优于遮阴处理;全光照下石笔木总生物量、根生物量比以及根冠比显著大于遮阴处理(P<0.05);50%遮阴处理苗木叶片叶绿素含量显著高于全光照和70%遮阴处理(P<0.05),叶绿素a/b值在各处理间无显著差异。丙二醛(MDA)含量、超氧化物歧化酶(SOD)活性在各处理间无显著差异(P>0.05);70%遮阴处理的苗木叶片过氧化氢酶(CAT)活性最高,显著高于全光照和50%遮阴。由此表明,充足的光照环境有利于石笔木苗木生长。

关键词: 石笔木; 遮阴; 生长; 保护酶

本文引用格式

WEN Shan-na , TIAN Xue-qin , CHEN Xue-mei , XUE Ke-na , HE Jian-qiang . 遮阴对石笔木苗木生长和保护酶活性的影响[J]. 亚热带植物科学, 2023 , 52(1) : 32 -37 . DOI: 10.3969/j.issn.1009-7791.2023.01.005

Abstract

In order to observe the adaptability of Tutcheria championi seedlings to shading environment, using full light (no shading) as control, the influence on the growth and physiological characteristics of two-year T. championi seedlings were investigated under the conditions of 30%, 50% and 70% shading. The results showed that the seedlings under full light was stronger than the other treatments, the seedling height, ground diameter were higher than the seedlings under shading treatments. The total biomass, root mass ratio and root shoot ration of seedlings under full light were significantly higher than seedlings under shading treatments. The chlorophyll content of seedling leaves under 50% shading was significantly higher than that under full light and 70% shading (P<0.05), and there was no significant difference in chlorophyll a/b value among all treatments. There were no significant differences in malondialdehyde (MDA) content and superoxide dismutase (SOD) activity among all treatments (P>0.05). Catalase (CAT) activity was the highest in the 70% shading treatment, which was significantly higher than those of full light and 50% shading treatments (P<0.05). Therefore, sufficient light is good for the growth of T. championi seedlings.

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