用高压液相色谱(HPLC)技术检测了小麦(TriticumaestivumL.)种子在成熟脱水过程中(蜡熟期)3种不同形态(游离态free:f;酸可溶性共价结合态ac id solub le covalentlycon jugated:ASCC和酸不溶性共价结合态ac id insolub le cova-lently co...用高压液相色谱(HPLC)技术检测了小麦(TriticumaestivumL.)种子在成熟脱水过程中(蜡熟期)3种不同形态(游离态free:f;酸可溶性共价结合态ac id solub le covalentlycon jugated:ASCC和酸不溶性共价结合态ac id insolub le cova-lently con jugated:AISCC)多胺(腐胺putresc ine:Put、亚精胺sperm id ine:Spd和精胺sperm ine:Spm)的动态变化。结果表明:在种子成熟脱水过程中,fPut的变化不明显,而fSpd和fSpm的水平明显上升。酸可溶性共价结合态多胺(ASCC-PAs)的变化不明显,而酸不溶性共价结合态腐胺(AISCC-Put)和酸不溶性共价结合态亚精胺(AISCC-Spd)的含量明显升高。这些结果暗示,fSpd、fSpm、AISCC-Put和AISCC-Spd在小麦种子成熟脱水过程中可能起重要作用。展开更多
A new molybdophosphate, (NH3CH2CH2NH3)2Mo5O15(HPO4)2 has been synthesized under hydrothermal conditions and structurally characterized by single crystal X ray diffractions. The compound crystallizes in the monoclinic,...A new molybdophosphate, (NH3CH2CH2NH3)2Mo5O15(HPO4)2 has been synthesized under hydrothermal conditions and structurally characterized by single crystal X ray diffractions. The compound crystallizes in the monoclinic, space group C2/c, a=1.7633(2)nm, b=1.00122(11) nm, c=1.37624(13)nm, β=96.974(5)°, V=2.4117(5)nm3, Z=4, Dc=2.853g·cm-3, μ(MoKα)=2.766mm-1, F(000)=1992. The structure contains the isolated polyanions of [Mo5O15(HPO4)2]4- units around which the portonated ethylenediamine ions are pos itioned. By hydrogen bond interactions the polyanions are interconnected to form a three dimensional network. Other characterizations by powder XRD, IR and thermal analysis are also described. CCDC: 206321.展开更多
文摘用高压液相色谱(HPLC)技术检测了小麦(TriticumaestivumL.)种子在成熟脱水过程中(蜡熟期)3种不同形态(游离态free:f;酸可溶性共价结合态ac id solub le covalentlycon jugated:ASCC和酸不溶性共价结合态ac id insolub le cova-lently con jugated:AISCC)多胺(腐胺putresc ine:Put、亚精胺sperm id ine:Spd和精胺sperm ine:Spm)的动态变化。结果表明:在种子成熟脱水过程中,fPut的变化不明显,而fSpd和fSpm的水平明显上升。酸可溶性共价结合态多胺(ASCC-PAs)的变化不明显,而酸不溶性共价结合态腐胺(AISCC-Put)和酸不溶性共价结合态亚精胺(AISCC-Spd)的含量明显升高。这些结果暗示,fSpd、fSpm、AISCC-Put和AISCC-Spd在小麦种子成熟脱水过程中可能起重要作用。
文摘A new molybdophosphate, (NH3CH2CH2NH3)2Mo5O15(HPO4)2 has been synthesized under hydrothermal conditions and structurally characterized by single crystal X ray diffractions. The compound crystallizes in the monoclinic, space group C2/c, a=1.7633(2)nm, b=1.00122(11) nm, c=1.37624(13)nm, β=96.974(5)°, V=2.4117(5)nm3, Z=4, Dc=2.853g·cm-3, μ(MoKα)=2.766mm-1, F(000)=1992. The structure contains the isolated polyanions of [Mo5O15(HPO4)2]4- units around which the portonated ethylenediamine ions are pos itioned. By hydrogen bond interactions the polyanions are interconnected to form a three dimensional network. Other characterizations by powder XRD, IR and thermal analysis are also described. CCDC: 206321.
