为明确内麦系列小麦品种(系)的染色体结构特点,利用荧光原位杂交(fluorescence in situ hybridization,FISH)技术和pTa535、pSc119.2探针对21份内麦系列小麦材料的染色体进行分析。结果显示,5份材料含1RS/1BL易位染色体;探针除3A、7A、2...为明确内麦系列小麦品种(系)的染色体结构特点,利用荧光原位杂交(fluorescence in situ hybridization,FISH)技术和pTa535、pSc119.2探针对21份内麦系列小麦材料的染色体进行分析。结果显示,5份材料含1RS/1BL易位染色体;探针除3A、7A、2B、3B、4B、2D和4D外的其他染色体在21份材料间存在结构差异;共鉴定出49种染色体多态类型,其中数量最多的是A基因组(22),其次是B基因组(14)和D基因组(13);在5B、6B、3D和7D染色体的同源染色体间存在不对称核型;根据A、B和D基因组的FISH核型,把21份材料分为16类。通过FISH信号模式,发现所有材料在染色体水平上都有变异。多数材料的染色体类型一致,推测这些材料的遗传背景一致或者相似。展开更多
With the excessive consumption of fossil fuels and the massive emission of CO_(2),it has led to a series of environmental crises posing a serious threat to sustainable development.Electrochemical CO_(2) reduction reac...With the excessive consumption of fossil fuels and the massive emission of CO_(2),it has led to a series of environmental crises posing a serious threat to sustainable development.Electrochemical CO_(2) reduction reaction( CO_(2)RR)to ethylene helps solve these serious environmental crises.Herein,we report the synthesis of a copper-based electrocatalyst by pyrolysis of yolk-shell structured HKUST-1 with partial substitution of trimesic acid by benzimidazole(nitrogen source).The electrocatalyst exhibits an ethylene Faradic efficiency(FE)of 25.8%and a partial ethylene current density of 23.7 mA/cm^(2),in addition,the electrocatalyst can maintain stable performance during 10 h of electrolysis,which are all better than those of the electrocatalyst without nitrogen dopant.According to electrochemical measurements and X-ray photoelectron spectroscopy(XPS),we propose that the nitrogen dopant plays an effective role in stabilizing Cu(I)species and promoting CO_(2) molecules activation,as well as suppressing the reduction of Cu(I)species during electrolysis.Eventually,the performance of the electrocatalyst toward CO_(2)RR is studied in a flow cell.This work provides a new route for the design of Cu-based electrocatalyst toward electrochemical CO_(2) conversion into ethylene.展开更多
文摘为明确内麦系列小麦品种(系)的染色体结构特点,利用荧光原位杂交(fluorescence in situ hybridization,FISH)技术和pTa535、pSc119.2探针对21份内麦系列小麦材料的染色体进行分析。结果显示,5份材料含1RS/1BL易位染色体;探针除3A、7A、2B、3B、4B、2D和4D外的其他染色体在21份材料间存在结构差异;共鉴定出49种染色体多态类型,其中数量最多的是A基因组(22),其次是B基因组(14)和D基因组(13);在5B、6B、3D和7D染色体的同源染色体间存在不对称核型;根据A、B和D基因组的FISH核型,把21份材料分为16类。通过FISH信号模式,发现所有材料在染色体水平上都有变异。多数材料的染色体类型一致,推测这些材料的遗传背景一致或者相似。
基金Talent project of Revitalizing Liaoning Province,China(No.XLYC2002067)Science&Technology Innovation Funds of Dalian City,China(Nos.2020JJ25CY003,2021JB11GX005)+1 种基金Key Research and Development Plan of Liaoning Province in 2020,China(No.2020JH2/10100025)Fundamental Research Funds for the Central Universities,China(Nos.DUT19ZD208,DUT20ZD208).
文摘With the excessive consumption of fossil fuels and the massive emission of CO_(2),it has led to a series of environmental crises posing a serious threat to sustainable development.Electrochemical CO_(2) reduction reaction( CO_(2)RR)to ethylene helps solve these serious environmental crises.Herein,we report the synthesis of a copper-based electrocatalyst by pyrolysis of yolk-shell structured HKUST-1 with partial substitution of trimesic acid by benzimidazole(nitrogen source).The electrocatalyst exhibits an ethylene Faradic efficiency(FE)of 25.8%and a partial ethylene current density of 23.7 mA/cm^(2),in addition,the electrocatalyst can maintain stable performance during 10 h of electrolysis,which are all better than those of the electrocatalyst without nitrogen dopant.According to electrochemical measurements and X-ray photoelectron spectroscopy(XPS),we propose that the nitrogen dopant plays an effective role in stabilizing Cu(I)species and promoting CO_(2) molecules activation,as well as suppressing the reduction of Cu(I)species during electrolysis.Eventually,the performance of the electrocatalyst toward CO_(2)RR is studied in a flow cell.This work provides a new route for the design of Cu-based electrocatalyst toward electrochemical CO_(2) conversion into ethylene.
