为了探究水杉(Metasequoia glyptostroboides Hu et Cheng)、池杉(Taxodium ascendens Brongn.)和落羽杉(T.distichum(Linn.)Rich.)挥发性有机化合物(VOCs)的差异,从植物挥发性有机化合物角度为其园林配置提供理论依据,试验采用动态顶...为了探究水杉(Metasequoia glyptostroboides Hu et Cheng)、池杉(Taxodium ascendens Brongn.)和落羽杉(T.distichum(Linn.)Rich.)挥发性有机化合物(VOCs)的差异,从植物挥发性有机化合物角度为其园林配置提供理论依据,试验采用动态顶空气体循环采集法和热脱附气质联用技术(TDS-GC-MS)对3种杉科植物挥发物进行成分分析。结果表明:萜烯类化合物是3种杉科植物挥发性有机化合物的主要成分。其中从水杉中鉴定出26种成分,主要为β-蒎烯(相对峰面积50.41%),水芹烯(13.42%),柠檬烯(6.96%),3-蒈烯(4.92%)和α-蒎烯(3.77%);从池杉中鉴定出37种成分,主要为β-蒎烯(40.18%),水芹烯(12.01%),柠檬烯(8.10%),石竹烯(5.77%)和顺-3-己烯醇(5.30%);从落羽杉中鉴定出28种成分,主要为β-蒎烯(42.97%),柠檬烯(30.53%),水芹烯(6.54%),莰烯(3.44%)和石竹烯(2.46%)。展开更多
One year old Taxodium distichum seedlings were grown in pots with varied soil water and salt(NaCl) levels (alone and in combination) under greenhouse conditions to determine their effects on the growth and biomass all...One year old Taxodium distichum seedlings were grown in pots with varied soil water and salt(NaCl) levels (alone and in combination) under greenhouse conditions to determine their effects on the growth and biomass allocation of the seedlings.The results showed that there were significant effects of soil salt and water contents on the relative height growth,relative stem diameter growth,biaomass increment and allocation,shoot/root ratio,seedling survival,ratio of branch to stem area,ratio of leaf mass to stem area,and ratio of leaf mass to branch area.According to the biomass increment,relative height growth and relative stem diameter growth,20 treatments were classified into 3 groups by means of systematic cluster analysis.The first one was the treatments waterlogging,flooding,waterlogging + 0.15%NaCl,flooding+0.15%NaCl,and waterlogging + 0.3%NaCl,which had a high growth,the second one was the treatments flooding+0.45%NaCl,flooding+0.3%NaCl,75% of field capacity,and 75% of field capacity+ 0.15%NaCl,which had a medium growth,and the last one was the treatments 50% of field capacity,50% of field capacity+ 0.15%NaCl,waterlogging +0.45%NaCl,25% of field capacity,25% of field capacity+ 0.15%NaCl,75% of field capacity+ 0.3%NaCl,75% of field capacity+ 0.45%NaCl,25% of field capacity+ 0.3%NaCl,50% of field capacity+ 0.3%NaCl,50% of field capacity+ 0.45%NaCl,and 25% of field capacity+ 0.45%NaCl,which had a poor growth.展开更多
文摘为了探究水杉(Metasequoia glyptostroboides Hu et Cheng)、池杉(Taxodium ascendens Brongn.)和落羽杉(T.distichum(Linn.)Rich.)挥发性有机化合物(VOCs)的差异,从植物挥发性有机化合物角度为其园林配置提供理论依据,试验采用动态顶空气体循环采集法和热脱附气质联用技术(TDS-GC-MS)对3种杉科植物挥发物进行成分分析。结果表明:萜烯类化合物是3种杉科植物挥发性有机化合物的主要成分。其中从水杉中鉴定出26种成分,主要为β-蒎烯(相对峰面积50.41%),水芹烯(13.42%),柠檬烯(6.96%),3-蒈烯(4.92%)和α-蒎烯(3.77%);从池杉中鉴定出37种成分,主要为β-蒎烯(40.18%),水芹烯(12.01%),柠檬烯(8.10%),石竹烯(5.77%)和顺-3-己烯醇(5.30%);从落羽杉中鉴定出28种成分,主要为β-蒎烯(42.97%),柠檬烯(30.53%),水芹烯(6.54%),莰烯(3.44%)和石竹烯(2.46%)。
文摘One year old Taxodium distichum seedlings were grown in pots with varied soil water and salt(NaCl) levels (alone and in combination) under greenhouse conditions to determine their effects on the growth and biomass allocation of the seedlings.The results showed that there were significant effects of soil salt and water contents on the relative height growth,relative stem diameter growth,biaomass increment and allocation,shoot/root ratio,seedling survival,ratio of branch to stem area,ratio of leaf mass to stem area,and ratio of leaf mass to branch area.According to the biomass increment,relative height growth and relative stem diameter growth,20 treatments were classified into 3 groups by means of systematic cluster analysis.The first one was the treatments waterlogging,flooding,waterlogging + 0.15%NaCl,flooding+0.15%NaCl,and waterlogging + 0.3%NaCl,which had a high growth,the second one was the treatments flooding+0.45%NaCl,flooding+0.3%NaCl,75% of field capacity,and 75% of field capacity+ 0.15%NaCl,which had a medium growth,and the last one was the treatments 50% of field capacity,50% of field capacity+ 0.15%NaCl,waterlogging +0.45%NaCl,25% of field capacity,25% of field capacity+ 0.15%NaCl,75% of field capacity+ 0.3%NaCl,75% of field capacity+ 0.45%NaCl,25% of field capacity+ 0.3%NaCl,50% of field capacity+ 0.3%NaCl,50% of field capacity+ 0.45%NaCl,and 25% of field capacity+ 0.45%NaCl,which had a poor growth.
