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Electrophysiological responses of the rice striped stem borer Chilo suppressalis to volatiles of the trap plant vetiver grass (vetiveria zizanioides L.)

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Journal of Integrative Agriculture 2017年第11期16卷 2525-2533页

作者： LU Yan-hui LIU Kai ZHENG Xu-song Lü Zhong-xian State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences Hangzhou 310021 P.R. China

vetiver grass （vetiveria zizanioides L.） was previously found to effectively attract female adults of Chilo suppressalis （Walker）, an important pest of rice. To determine the volatile compounds involved in this attraction, electroantennography （EAG） responses to seven synthetic volatiles released from vetiver plants were examined. Our results indicated that the responses of C. suppressalis adult antennae to the different compounds varied widely. The compounds elicited strong EAG responses in female antennae were subsequently selected for further EAG response tests, namely, caryophyllene, β-ocimene, linalool and a-pinene. EAG responses to a combination of these four compounds did not differ significantly from the individual compounds. However, pair combination tests indicated that 0.01μg μL-1linalool and 50 μg μL-1 α-pinene, 50 μgμL-1 caryophyllene and 0.01μg μL-1 linalool, 0.01 μg μL-1 13-ocimene and 0.01 μg μL-1 linalool, and 0.01μg μL-1 β-ocimene and 50 μg μL-1 caryophyllene elicited significantly greater EAG responses in 3-day female moths compared to the 1-day female. These compound combinations and the corresponding ratios are probably playing an important role in attracting female adults of C. suppressalis to the vetiver grass.

关键词： Chilo suppressalis electroantennography （EAG） volatiles vetiver grass trapping mechanism attraction

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Phytoremediation Potential of vetiver grass (vetiveria Zizanioides) in Two Mixed Heavy Metal Contaminated Soils from the Zoundweogo and Boulkiemde Regions of Burkina Faso (West Africa)

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Journal of Geoscience and Environment Protection 2021年第11期9卷 73-88页

作者： Norbert Ondo Zue Abaga Sylvie Dousset Colette Munier-Lamy Université des Sciences et Techniques de Masuku (USTM) Unité de Recherche en Sciences de la Terre et de l’Environnement (URESTE) Franceville Gabon Université de Lorraine CNRS Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC) Vandoeuvre-lès-Nancy France

In the agricultural regions of Burkina Faso, urban solid waste fertilizers were usually applied. This activity is likely to contaminate the soils and expose populations to serious diseases. This study aims to assess rate of heavy metal (Cd, Cu, Mn, Pb, Zn, Ni, Cr) contamination in both agricultural lixisol and vertisol and to evaluate the removal efficiency of heavy metals using vetiver grass on different two mixed heavy metal contaminated soils. A pot experiment was conducted to compare the metal accumulation and overall efficiency of metal uptake by different plant parts (roots and shoots) on both tropical soils. After 3 and 6 months growing on laboratory conditions, vetiver grass plants were harvested and heavy metal concentrations in shoot and root parts determined by Inductively Coupled Plasma - Atomic Emission Spectroscopy. The results indicate that at 3 and 6 moths, the shoot and root concentrations of heavy metals in vetiver grass harvested in lixisol were higher than vertisol. For different plant parts, all metal concentrations were higher in root than in shoot, except Cu and Pb. At the 3 and 6 months, the BCF values > 1 for Cd, Cu and Zn in both soils showed vetiver grass as an effective phyto-stabilizer for these metals. However, the TF values > 1 for Cd (lixisol), Mn, Zn Ni and Cr (vertisol) indicated the efficiency of vetiver for phytoextraction. The results of this study showed that vetiver is more effective in lixisol, but it can be used for remediation of both studied tropical soils from agricultural region of Burkina Faso. Nevertheless, considering the special limitations of the experimental conditions, further field monitoring is necessary to demonstrate the phytoremediation efficiency of vetiver in agricultural soils under the climatic conditions of Burkina Faso.

关键词： vetiver grass Heavy Metals Lixisol Vertisol Phytoextraction Phytostabilization Contamination

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Changes in Content of Free,Conjugated and Bound Polyamines and Osmotic Adjustment in Adaptation of vetiver grass to Water Deficit

Changes in Content of Free,Conjugated and Bound Polyamines a...

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中国植物生理学会第十次会员代表大会暨全国学术年会

作者： Q. Zhou, B.J. Yu College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, P. R. Chinaa

＜正＞Osmotic adjustment and alteration of polyamines （PAs） have been suggested to play roles in plant adaptation to water deficit/drought stress. In this study, the changes in the cell membrane integrity, plant gro... 详细信息

关键词： Osmotic adjustment Polyamines Rewatering vetiver grass Water deficit

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Characteristics of unsaturated soil slope covered with capillary barrier system and deep-rooted grass under different rainfall patterns Check for updates

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International Soil and Water Conservation Research 2021年第3期9卷 405-418页

作者： Yangyang Li Alfrendo Satyanaga Harianto Rahardjo School of Civil and Environmental Engineering Nanyang Technological UniversityBlock Nl50 Nanyang AvenueSingapore School of Engineering and Digital Sciences Nazarbayev UniversityKabanbay Batyr Ave.53Nur-Sultan010000Kazakhstan School of Civil and Environmental Engineering Nanyang Technological UniversityBlock Nl#18-3650 Nanyang Avenue639798Singapore

Rainfall-induced slope failures commonly occur in residual soil slopes.Slope failures are triggered by the reduction in soil strength.This is attributed to the decrease in soil suction due to rainwater infiltration.Slope covers like capillary barrier system and vegetative cover are effective methods that can be used to prevent rainfall-induced slope failures.The capillary barrier system is able to limit the rainwater infiltration,and vegetation can contribute to the increase in soil strength.vetiver grass is widely planted in tropical and subtropical areas of the world for soil and water conservation.This study investigates the characteristics of unsaturated soil slope covered with capillary barrier system and vetiver grass in comparison with the original slope through numerical analyses and field measurements.The analyses were carried out under the advanced,normal,and delayed rainfall patterns.The results of the analyses indicated that the capillary barrier system played a more significant role than the vetiver grass in maintaining slope stability,although both the capillary barrier system and vetiver grass contributed to the slope stability.In addition,both numerical analyses and field measurements showed that under the delayed and normal rainfall patterns,when antecedent rainwater infiltration could increase the soil moisture,the capillary barrier system performed much better compared to vetiver grass in maintaining soil matric suctions and slope stability.

关键词： Unsaturated Slope stability Unsaturated soil CBS vetiver grass

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A Preliminary Experiment on Slope Rehabilitation with vetiver and Native Plants in South China

A Preliminary Experiment on Slope Rehabilitation with Vetive...

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作者： Xuhui Kong~1 Weiwen Lin~1 Lixia Gao~2 Hao Hong~3 (1.Floricultural Reseach Institute of Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China 2.Shunde Ming Zhi Xing Floritech Co.,Ltd.,Shunde 528313,China 3.Guaftgzhou Hongri Landscape-Gardening Company,Guangzhou 510630,China)

vetiver has been used very successfully in erosion control in many countries.It is therefore an excellent plant forslope works.In addition,it is much cheaper using vetiver grass than alternative measures.The cost of embankment stabilization withconventional engineering methods can be reduced by 90% when vetiver is used as an alternate.But vetiver grass has a weaknessthat is brown off in winter;as a result the landscape effect is not effective.So some Highway Administrative Departments have notaccepted vetiver grass.In order to solve this problem,a mixed planting technique combining vetiver and native plants was con-ducted in Baiyun District,Guangzhou.Eight native species were selected mainly for their suitability to grow on exposed sites and inpoor soil conditions.Based on the survival and growth rate of the seedlings,the trial indicated that the vetiver and Native PlantsTechnique(VNPT)is a simple,practical,low maintenance and very effective method for slope works.

关键词： vetiver grass native plant species erosion control Rehabilitation slope

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