[Effects of mepiquat chloride on inorganic elements contents in seeds of transgenic insect-resistant cotton determined by ICP-MS].

To evaluate the effects of a worldwide used plant growth regulator mepiquat chloride on the nutrition value and safety of seeds of transgenic Bt cotton, inorganic element components and contents in seeds of Bt cotton (Gossypium hirsutum cv. Guoxin 6) under field condition were determined using ICP-MS. In Bt cotton seeds, 54 kinds of inorganic elements were identified by ICP-MS, and 5 kinds of major elements, K, P, Mg, Ca and Na, were in range from 138.

[Effect of HKL-4 on active oxygen metabolism and photochemical efficiency in licorice leaf].

Objective: To study the effects of HKL-4 on physiological changes during growth of leaves.

Method: Using licorice (Glycyrrhiza uralensis) as material, the effects of HKL-4 on active oxygen metabolism and photochemical efficiency in licorice leaf were determined under field condition.

Result And Conclusion: The contents of chlorophyll, activity of SOD and CAT increased, while the MDA contents in leaves decreased.