为明确草铵膦、高效氟吡甲禾灵联合作用效果和15%草铵膦·高效氟吡甲禾灵ME对非耕地一年生禾本科杂草的防治效果,采用茎叶喷雾法测定了2种除草剂室内联合作用试验,并对筛选的15%草铵膦·高效氟吡甲禾灵ME进行了田间药效试验。...为明确草铵膦、高效氟吡甲禾灵联合作用效果和15%草铵膦·高效氟吡甲禾灵ME对非耕地一年生禾本科杂草的防治效果,采用茎叶喷雾法测定了2种除草剂室内联合作用试验,并对筛选的15%草铵膦·高效氟吡甲禾灵ME进行了田间药效试验。草铵膦、高效氟吡甲禾灵以9∶1复配对非耕地一年生禾本科杂草的联合作用较好,15%草铵膦·高效氟吡甲禾灵ME的推荐使用剂量为337.5~450 g a.i./hm^2,药后30 d对非耕地一年生禾本科杂草的总体防效可达到96.3%~98.5%。草铵膦、高效氟吡甲禾灵复配互补性强,对牛筋草等一年生禾本科杂草增效作用明显,15%草铵膦·高效氟吡甲禾灵ME能够有效防除非耕地一年生禾本科杂草。展开更多
A full_length cDNA has been cloned encoding nicotinamide adenine dinucleotide phosphate_specific glutamate dehydrogenase (NADP_GDH) from Chlorella sorokiniana with the RT_PCR method. The complete nucleotide sequence o...A full_length cDNA has been cloned encoding nicotinamide adenine dinucleotide phosphate_specific glutamate dehydrogenase (NADP_GDH) from Chlorella sorokiniana with the RT_PCR method. The complete nucleotide sequence of NADP_GDH gene had 94% homology to the previously reported one . The NADP_GDH gene was constructed into a vector highly expressed in plants. The specific activity of NADP_GDH in transformants was detected, but not in the control plants. All transformed shoots on MS medium containing lower concentration of nitrogen and the transformed seedlings grown in lower concentration of nitrogen vermiculite had higher growth rate and more leaves than the control plants. Transformed leaf discs cultured on MS medium containing different nitrogen concentrations had more chlorophyll contents compared to the controls. These results suggested that exogenous NADP_GDH may enhance the absorption and utilization to ammonium in plants. The increased weight of transformed leaf discs cultured on medium supplemented with different concentrations of phosphinothricin (PPT) was more than that of control discs. 0.5 μg/mL PPT could be used as a selecting drug instead of kanamycin to develop the transformants. These results suggested that the NADP_GDH gene might be used as a new selecting gene in the future research of plant gene engineering.展开更多
Glufosinate-ammonium is a highly efficient, non-selective herbicide. The former synthesis schemes of glufosinate-ammonium were introduced and analyzed, the main of which are Arbuzov synthesis method, method under cata...Glufosinate-ammonium is a highly efficient, non-selective herbicide. The former synthesis schemes of glufosinate-ammonium were introduced and analyzed, the main of which are Arbuzov synthesis method, method under catalyzer and high pressure, targeted method under low temperature, Gabriel synthesis method, Zelinsky-Strecher synthetic method, synthetic method with chiral-synthon, and several special methods such as with enzyme or stereochemistry. Based on the structure and synthesis characteristic of glufosinate-ammonium as well as Arbuzov reaction and Michael reaction, a novel and reasonable scheme, which was named Arbuzov-Michael method, was put forward as the more economical one with simpler raw reagents and less waste.展开更多
A convenient and effective method for synthesis of L-phosphinothricin was described. The highlight was involved in a simple access to the key intermediate L-2-amino-4-chlorobutyric acid derivative from the inexpensive...A convenient and effective method for synthesis of L-phosphinothricin was described. The highlight was involved in a simple access to the key intermediate L-2-amino-4-chlorobutyric acid derivative from the inexpensive L-methionine.展开更多
文摘为明确草铵膦、高效氟吡甲禾灵联合作用效果和15%草铵膦·高效氟吡甲禾灵ME对非耕地一年生禾本科杂草的防治效果,采用茎叶喷雾法测定了2种除草剂室内联合作用试验,并对筛选的15%草铵膦·高效氟吡甲禾灵ME进行了田间药效试验。草铵膦、高效氟吡甲禾灵以9∶1复配对非耕地一年生禾本科杂草的联合作用较好,15%草铵膦·高效氟吡甲禾灵ME的推荐使用剂量为337.5~450 g a.i./hm^2,药后30 d对非耕地一年生禾本科杂草的总体防效可达到96.3%~98.5%。草铵膦、高效氟吡甲禾灵复配互补性强,对牛筋草等一年生禾本科杂草增效作用明显,15%草铵膦·高效氟吡甲禾灵ME能够有效防除非耕地一年生禾本科杂草。
文摘A full_length cDNA has been cloned encoding nicotinamide adenine dinucleotide phosphate_specific glutamate dehydrogenase (NADP_GDH) from Chlorella sorokiniana with the RT_PCR method. The complete nucleotide sequence of NADP_GDH gene had 94% homology to the previously reported one . The NADP_GDH gene was constructed into a vector highly expressed in plants. The specific activity of NADP_GDH in transformants was detected, but not in the control plants. All transformed shoots on MS medium containing lower concentration of nitrogen and the transformed seedlings grown in lower concentration of nitrogen vermiculite had higher growth rate and more leaves than the control plants. Transformed leaf discs cultured on MS medium containing different nitrogen concentrations had more chlorophyll contents compared to the controls. These results suggested that exogenous NADP_GDH may enhance the absorption and utilization to ammonium in plants. The increased weight of transformed leaf discs cultured on medium supplemented with different concentrations of phosphinothricin (PPT) was more than that of control discs. 0.5 μg/mL PPT could be used as a selecting drug instead of kanamycin to develop the transformants. These results suggested that the NADP_GDH gene might be used as a new selecting gene in the future research of plant gene engineering.
文摘Glufosinate-ammonium is a highly efficient, non-selective herbicide. The former synthesis schemes of glufosinate-ammonium were introduced and analyzed, the main of which are Arbuzov synthesis method, method under catalyzer and high pressure, targeted method under low temperature, Gabriel synthesis method, Zelinsky-Strecher synthetic method, synthetic method with chiral-synthon, and several special methods such as with enzyme or stereochemistry. Based on the structure and synthesis characteristic of glufosinate-ammonium as well as Arbuzov reaction and Michael reaction, a novel and reasonable scheme, which was named Arbuzov-Michael method, was put forward as the more economical one with simpler raw reagents and less waste.
文摘A convenient and effective method for synthesis of L-phosphinothricin was described. The highlight was involved in a simple access to the key intermediate L-2-amino-4-chlorobutyric acid derivative from the inexpensive L-methionine.
