[1]林德城,卢佳奥,李 琦,等.地下空间拥挤程度对杉木幼苗根系内源有机酸的影响[J].福建农林大学学报(自然科学版),2021,50(01):54-60.[doi:10.13323/j.cnki.j.fafu(nat.sci.).2021.01.008]
 LIN Decheng,LU Jiaao,LI Qi,et al.Effect of underground space crowding on endogenous organic acids in Chinese fir seedlings[J].,2021,50(01):54-60.[doi:10.13323/j.cnki.j.fafu(nat.sci.).2021.01.008]
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地下空间拥挤程度对杉木幼苗根系内源有机酸的影响()
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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:
54-60
栏目:
林业科学
出版日期:
2021-01-18

文章信息/Info

Title:
Effect of underground space crowding on endogenous organic acids in Chinese fir seedlings
文章编号:
1671-5470(2021)01-0054-07
作者:
林德城12 卢佳奥1 李 琦1 邹显花12 李 明12 吴鹏飞12
1.福建农林大学林学院; 2.福建省杉木种质创新工程研究中心,福建 福州 350002
Author(s):
LIN Decheng12 LU Jiaao1 LI Qi1 ZOU Xianhua12 LI Ming12 WU Pengfei12
1.College of Forestry, Fujian Agriculture and Forestry University; 2.Fujian Research Center for Innovative Engineering of Chinese Fir Germplasm, Fuzhou, Fujian 350002, China
关键词:
杉木 内源有机酸 根系竞争 地下环境
Keywords:
Chinese fir endogenous organic acids root competition underground environment
分类号:
S722.5
DOI:
10.13323/j.cnki.j.fafu(nat.sci.).2021.01.008
文献标志码:
A
摘要:
采用室内盆栽模拟方法,选择同一无性系杉木为研究对象,设置双株拥挤、双株宽敞和单株种植(对照)3个拥挤程度,分别于处理50、100和150 d后进行破坏性收获,测定不同拥挤条件下杉木根系内源有机酸的种类及含量.结果表明:参试杉木幼苗根系内的有机酸主要有草酸(3.69~8.99 mg·g-1)、苹果酸(0.34~0.63 mg·g-1)和柠檬酸(0.06~0.12 mg·g-1); 而棕榈酸、辛酸、肉豆蔻酸、亚油酸、山嵛酸和癸酸等有机酸含量较少(2.02~106.07 μg·g-1); 未检出γ-亚麻酸和十五碳烯酸.拥挤程度和处理时间对杉木根系内源有机酸含量的交互作用不显著; 双株拥挤处理第150天时杉木根系内的草酸、苹果酸、柠檬酸、棕榈酸、辛酸、肉豆蔻酸、亚油酸、山嵛酸含量明显增加,与对照相比,分别增加了116.1%、171.5%、175.4%、98.1%、182.4%、91.3%、315.3%、266.5%; 双株拥挤处理第150天时根系内柠檬酸含量显著低于同处理第50天时的含量,第100天时的山嵛酸含量显著高于另外两个时间点的含量,而其余有机酸含量均无显著变化.
Abstract:
To explore the effect of underground crowdness on the endogenous organic acid in the rhizosphere of Chinese fir, the same clones of Chinese fir were established at 3 levels of crowdness by indoor pot simulation experiment, including two-plant crowding, two-plant spaciousness and single-plant(control). Destructive harvesting was conducted on 50, 100 and 150 d to determine the types and contents of endogenous organic acids. The results showed that the organic acids were mainly comprised of oxalic acid(3.69-8.99 mg·g-1), malic acid(0.34-0.63 mg·g-1)and citric acid(0.06-0.12 mg·g-1)in the roots of Chinese fir seedlings. Palmitic acid, octylic acid, myristic acid, linoleic acid, behenic acid and decanoic acid were less than 2.02-106.07 μg·g-1 while γ-linolenic acid and pentadecenic acid were not detected. The crowding degree and treatment time had no significant interactive effect on the contents of endogenous organic acids. Compared with the control, the two-plant crowding treatment significantly increased the contents of oxalic acid, malic acid, citric acid, palmitic acid, caprylic acid, myristic acid, linoleic acid, and behenic acid by 116.1%, 171.5%, 175.4%, 98.1%, 182.4%, 91.3%, 315.3%, 266.5%, respectively on day 150. The citric acid content was significantly lower on day 150 than that on day 50 under two-plant crowding treatment; while the docosanoic acid content on 100 d was significantly higher than that at the other 2 time points; the contents of other organic acids had no significant change.

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备注/Memo

备注/Memo:
收稿日期:2020-04-27 修回日期:2020-06-21
基金项目:国家自然科学基金项目(31870614、30970451); 福建农林大学科技创新专项基金项目(CXZX2017496).
作者简介:林德城(1996-),男.研究方向:森林培育.Email:506881583@qq.com.通信作者吴鹏飞(1982-),男,教授,博士生导师,博士.研究方向:森林培育与水土保持.Email:fjwupengfei@126.com.
更新日期/Last Update: 2021-01-15