[1]赵小军,程 方,张 康,等.淹水处理下杨树不同无性系苗木根系形态变化[J].南京林业大学学报(自然科学版),2019,43(05):001-8.[doi:10.3969/j.issn.1000-2006.201808044]
 ZHAO Xiaojun,CHENG Fang,ZHANG Kang,et al.Root morphology of different poplar clone stecklings under waterlogging and flooding treatment[J].Journal of Nanjing Forestry University(Natural Science Edition),2019,43(05):001-8.[doi:10.3969/j.issn.1000-2006.201808044]
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淹水处理下杨树不同无性系苗木根系形态变化
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
43
期数:
2019年05期
页码:
001-8
栏目:
研究论文
出版日期:
2019-09-20

文章信息/Info

Title:
Root morphology of different poplar clone stecklings under waterlogging and flooding treatment
文章编号:
1000-2006(2019)05-0001-08
作者:
赵小军程 方张 康黄开栋倪 云孟 晓唐罗忠
(南京林业大学,南方现代林业协同创新中心,南京林业大学林学院,江苏 南京 210037)
Author(s):
ZHAO XiaojunCHENG FangZHANG KangHUANG KaidongNI Yun MENG XiaoTANG Luozhong*
(Co-Innovation Center for the Sustainable Forestry in Southern China,College of Forestry, Nanjing Forestry University,Nanjing 210037,China)
关键词:
杨树无性系 渍水处理 淹水处理 根系形态 综合评价
Keywords:
poplar(Populus spp.)clone waterlogging treatment flooding treatment root morphology comprehensive evaluation
分类号:
S718
DOI:
10.3969/j.issn.1000-2006.201808044
文献标志码:
A
摘要:
【目的】了解淹水处理下不同杨树无性系苗木根系的形态变化规律,揭示杨树对淹水胁迫的根系适应策略,为筛选耐水的杨树无性系提供依据。【方法】选用3804 杨、1388 杨、895 杨、110 杨和328 杨5 个杨树无性系,设置对照、渍水和淹水3 种处理,测定苗木根系的生物量、长度、数量、表面积、体积等指标。【结果】①渍水处理下杨树根生物量与对照无显著差异,但淹水处理下的根生物量却显著小于对照。②渍水和淹水处理下的多数杨树无性系苗木一级根数量与对照之间没有显著差异,但总根长、总根投影面积、总根表面积和总根体积却大于对照。③与对照相比,渍水和淹水处理下的杨树苗木根系平均直径有所减小,但根尖数、分叉数和交叉数却增大。④主成分分析提取出的2 个主成分累积贡献率为88. 58%,可较好地反映杨树苗木根系形态特征。【结论】隶属函数法分析表明,在渍水处理下5 个杨树无性系根系形态表现的优劣顺序是1388 杨>895 杨>3804 杨>110 杨>328 杨;在淹水处理下的优劣顺序是1388 杨>895 杨>110 杨>328 杨>3804 杨。所以,从根系形态表现看,1388杨和895 杨的耐水性较强。
Abstract:
【Objective】 In this study, the root morphology of different poplar(Populus sp.)clone seedlings under waterlogging and flooding treatment was explored, and the adaptive strategies of the poplar root system were elucidated to provide a scientific basis for the selection of poplar clones. 【Method】 Five poplar clones, i.e., 3804, 1388, 895, 110 and 328, were selected, and three treatments, i.e., control, waterlogging and flooding, were set up to determine the effects of different treatments on root characteristics such as biomass, total length, quantity, surface area and volume. 【Result】 ① There was no significant difference between the control and waterlogging groups in terms of poplar root biomass; however, in the flooding group, root biomass was significantly lower than that in the control group. ② No significant difference was found in terms of the number of first-order roots of most poplar clone stecklings between the treatment and control groups, but the total root length, projection area, surface area and volume were greater in the treatment groups than in the control group. ③ Compared with the control group, the treatment groups had decreased average root diameter but had increased number of root tips, root forks and root crossings. ④ The cumulative contribution rate of the two principal components extracted by principal component analysis was 88.58%, which may reflect the root morphological characteristics of poplar clone stecklings. 【Conclusion】 Subordinate function analysis showed that the order of the poplar clone stecklings based on root morphological performance for both treatment was as follows: waterlogging treatment, poplar 1388 > poplar 895>poplar 3804>poplar 110>poplar 328 and flooding treatment, poplar 1388>poplar 895>poplar 110>poplar 328>poplar 3804. In conclusion, based on the root morphology, we suggest that poplar 1388 and poplar 895 are more resistant to waterlogging and flooding among all studied poplar clone stecklings.

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备注/Memo

备注/Memo:
收稿日期:2018-08-23 修回日期:2019-01-02 基金项目:“十二五”国家科技支撑计划(2015BAD09B02); 江苏高校优势学科建设工程资助项目(PAPD)。 第一作者:赵小军(2811498726@qq.com)。*通信作者:唐罗忠(luozhongtang@njfu.edu.cn),教授,ORCID(0000-0001-6266-6623)。引文格式:赵小军,程方,张康,等. 淹水处理下杨树不同无性系苗木根系形态变化[J]. 南京林业大学学报(自然科学版),2019,43(5):1-8.
更新日期/Last Update: 2019-10-08