5'-Thymidylic Acid (sodium sal

生理酸性盐（physiologically acid salt）

　　 指植物根系在某种盐溶液中，对其阳离子吸收的量大于阴离子时，造成溶液 pH值下降，则称该盐为生理酸性盐。例如，将植物培养在硫酸钾（ K2 SO4 ）溶液中，由于植物对钾的需要量大于对硫的需要量，因此，根系吸收 K 量较 SO2- 4 为多。为保持体内电性平衡，根细胞向外界分泌质子（ H ），使溶液中 H 增加， pH值下降。这是由于根系生理活动的结果，由此而得名。  

Quantification of Abscisic Acid, Cytokinin, and Auxin Content in Salt-Stressed Plant Tissues

Plant hormones cytokinins, auxin (indole-3-acetic acid), and abscisic acid are central to regulation of plant growth and defence to abiotic stresses such as salinity. Quantification of the hormone levels and determination of their ratios

Sodium Acetate Precipitation of Small Nucleic Acids

实验步骤   1.        Add 2 μl carrier to the nucleic acid solution and mix well. 2.        Add 1:10 volume of 3 M sodium acetate and mix thoroughly; for 230 μl of Lower Running Buffer, this will be 23 μl of 3 M