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干旱胁迫下接种菌根真菌对滇柏和楸树幼苗根系的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年06期
Page:
23-27
Column:
研究论文
publishdate:
2012-12-05

Article Info:/Info

Title:
Effects of mycorrhizal fungus inoculation on the root of Cupressus duclouxiana and Catalpa bungei seedlings under drought stress
Author(s):
WANG Ruyan12YU Shuiqiang2ZHANG Jinchi2*ZHOU Chuifan2CHEN Lisha2
1.Taian Survey Bureau of Hydrology and Water Resources,Taian 271000,China;
2.Jiangsu Key Laboratory of Forestry Ecological Engineering, College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
Keywords:
drought resistance mycorrhizal fungi biomass root morphology Cupressus duclouxiana Catalpa bungei
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2012.06.005
Document Code:
A
Abstract:
The potted seedlings of Cupressus duclouxiana and Catalpa bungei were used to examine their response under different moisture content conditions, including normal moisture (25 %-30 %), moderate drought (15 %-20 %) and severe drought (5 %-10 %). The inoculated groups were the control group (A), VAM group (B), ectomycorrhizal(C) and mixture group (D, VAM+Ectomycorrhiza). After 150 days of treatment, the root biomass, root morphology and contents of nitrogen and phosphorus were measured. The results showed that after the seedlings were inoculated with mycorrhizal fungi, root biomass increased. The root biomass of Cupressus duclouxiana seedlings increased significantly under C and D treatments, however, B and D treatment significantly increased the root biomass of Catalpa bungei. Except severe drought,N and P contents in roots of Cupressus duclouxiana with mycorrhizal fungus inoculated were higher than those of control, whereas only with B and D treatment, the N and P contents of Catalpa bungei roots were higher than those of CK. After the seedlings inoculated with mycorrhizal fungi, the mean root diameter, total root length and root surface area of Cupressus duclouxiana increased; meanwhile, endomycorrhiza can positively affect the growth of the roots of Catalpa bungei seedlings.Our research showed that mycorrhizal fungus inoculation could enhance the drought resistence ability of Cupressus duclouxiana and Catalpa bungei seedlings in varying degrees.

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Last Update: 2012-11-30