[1]吕蒙蒙,武忆寒,马志慧,等.铝胁迫下生长调节剂对杉木幼苗生长及光合特性的影响[J].福建农林大学学报(自然科学版),2021,50(01):69-78.[doi:10.13323/j.cnki.j.fafu(nat.sci.).2021.01.010]
 L Mengmeng,WU Yihan,MA Zhihui,et al.Effects of growth regulators on growth and photosynthetic characteristics of Chinese fir seedlings under aluminum stress[J].,2021,50(01):69-78.[doi:10.13323/j.cnki.j.fafu(nat.sci.).2021.01.010]
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铝胁迫下生长调节剂对杉木幼苗生长及光合特性的影响()
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福建农林大学学报(自然科学版)[ISSN:1671-5470/CN:35-1255/S]

卷:
50卷
期数:
2021年01期
页码:
69-78
栏目:
林业科学
出版日期:
2021-01-18

文章信息/Info

Title:
Effects of growth regulators on growth and photosynthetic characteristics of Chinese fir seedlings under aluminum stress
文章编号:
1671-5470(2021)01-0069-10
作者:
吕蒙蒙12 武忆寒12 马志慧2 陈 宇12 林思祖12
1.福建农林大学林学院,福建 福州 350002; 2.国家林业和草原局杉木工程技术研究中心,福建 福州 350002
Author(s):
LÜ Mengmeng12 WU Yihan12 MA Zhihui2 CHEN Yu12 LIN Sizu12
1.College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; 2.Chinese Fir Engineering Technology Research Center, National Forestry and Grassland Administration, Fuzhou, Fujian 350002, China
关键词:
杉木 生长调节剂 铝胁迫 生长 光合特性
Keywords:
Chinese fir growth regulator aluminum stress growth photosynthetic characteristics
分类号:
S791.27
DOI:
10.13323/j.cnki.j.fafu(nat.sci.).2021.01.010
文献标志码:
A
摘要:
以杉木实生苗为试验材料,采用单因素试验的方法,选择NAA、IAA、6-BA 3种生长调节剂,各设置3个浓度,研究铝胁迫下不同生长调节剂对杉木幼苗生长及光合特性的影响.结果表明:铝胁迫使杉木幼苗的根长与根冠比受到了抑制,杉木叶片的光合速率(Pn)、气孔导度(Cs)、蒸腾速率(Tr)以及光合色素(叶绿素a、叶绿素b、叶绿素a+b和类胡萝卜素)含量明显降低,胞间二氧化碳浓度(Ci)明显提高.表明NAA、IAA和6-BA等3种生长调节剂促进了根的生长,提高了杉木幼苗的根冠比、Pn、Cs、Tr以及光合色素含量,降低了Ci,有效地减轻铝毒对杉木幼苗造成的不良影响.
Abstract:
To study the efficacy of growth regulators(NAA, IAA and 6-BA)on alleviating the growth of Cunninghamia lanceolata seedlings undergoing aluminum(Al)stress, C.lanceolata seedlings were subject to 3 levels of Al stress by single factor test. The results showed that Al stress inhibited the root length/root crown ratio of C.lanceolata seedlings. The photosynthetic rate(Pn), stomatal conductance(Cs), transpiration rate(Tr)and contents of photosynthetic pigments(chlorophyll a, b, chlorophyll a + b and carotenoid)decreased significantly, while the intercellular carbon dioxide concentration(Ci)increased significantly. After treated with the 3 growth regulators, seedlings experienced alleviated Al toxicity. The symptoms included promoted root growth, increased root/shoot ratio, Pn, Cs, Tr, and contents of photosynthetic pigments, and reduced Ci. The study provides a theoretical basis for the tolerance mechanism to Al in C.lanceolata.

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备注/Memo

备注/Memo:
收稿日期:2020-03-24 修回日期:2020-09-12
基金项目:国家林业和草原局杉木工程技术研究中心平台建设项目(ptjh13002); 福建农林大学科技创新专项基金(KFA19127A).
作者简介:吕蒙蒙( 1993-),男.研究方向:林木种苗.Email:1257044523@qq.com.通信作者林思祖(1953-),男,教授,博士生导师.研究方向:林木遗传育种.Email:Szlin53@126.com.
更新日期/Last Update: 2021-01-15