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利用开顶式气室(OTC),采用盆栽试验研究了CO2浓度为550μL·L-1、O3浓度为60μL·L-1及CO2浓度为550μL·L-1+O3浓度为60μL·L-1对7个冬小麦品种幼苗生物量和化感物质丁布(DIMBOA)的影响.结果表明:在高CO2浓度下,冬小麦幼苗地上生物量与丁布含量在品种间存在显著差异,品种碧蚂1号幼苗和根干质量比对照(CO2浓度为370μL·L-1,O3浓度为40μL·L-1)增加了36.8%和24.7%;丁布含量增幅为5.7%~184.6%.除碧蚂1号和陕139外,高浓度O3导致冬小麦生物量降低,但使所有品种丁布含量显著增加,变幅为0.5~3倍.交互作用下所有品种根干质量降低,长武134地上部质量、根质量和丁布含量降幅最大,分别为8.2%、27.9%和35.5%;与长武134、远丰175和兰考217丁布含量降低相反,陕139丁布含量增加84.6%.聚类分析显示,不同处理和不同品种均显著影响丁布含量,陕139、兰考217和长武134在高CO2和O3浓度处理下聚为一类,而陕139在所有处理中丁布含量均表现为增加.表明化感物质丁布可以作为气候变化条件下,尤其是CO2和O3变化下抗性育种的特定指标.
Pot experiments were carried out to study the effects of CO2 concentration on the concentration of CO2 at a concentration of 550 μL·L-1, O3 concentration of 60 μL·L-1 and CO2 concentration of 550 μL·L-1 + O3 at a concentration of 60 μL·L-1 using an open top chamber (OTC) On seedling biomass and allelochemical DIMBOA of seven winter wheat cultivars were studied.The results showed that under high CO2 concentration, the aboveground biomass and the content of butyricin in winter wheat seedlings were significantly different among breeds, The seedling and root dry weight increased by 36.8% and 24.7% compared with the control (CO2 concentration of 370μL·L-1 and O3 concentration of 40μL·L-1), while the content of butyricin increased by 5.7% -184.6% And Shaan 139, the biomass of winter wheat decreased with the high concentration of O3, but the content of butadiene in all varieties significantly increased by 0.5 ~ 3 times.The root mass of all varieties under the interaction decreased, Compared with the decrease of the content of sachet in Changwu 134, Yuanfeng 175 and Lankao 217, the content of strychnine and strychnine decreased by 84.6%, respectively.The clustering analysis showed that the content of strychnine and strychnine was the largest, with 8.2%, 27.9% and 35.5% Different treatments and different cultivars significantly affected the content of stilbene, while Shaan 139, Lankao 217 and Changwu 134 were clustered under high CO2 and O3 concentrations, whereas Shaan 139 The content of butyricin showed an increase in all treatments, indicating that the allelochemicals butyricin could be used as a specific index of resistance breeding under the conditions of climate change, especially the changes of CO2 and O3.