Technical Regulations for Standardized Planting of Rare and Multi-purpose Wild Fruit Kadsura coccinea

The cultivation technology were standardized for improving the yield and quality,and the commodity value and the competitiveness of fruit market,and solving the bottleneck problem—fruit quality and yield that affect the industrial development of rare and multi-purpose wild fruit Kadsura coccinea(Lem.)A.C.Smith.Through the investigation of K.coccinea production area and planting area,collection and analysis of fruit samples,it was found that in most planting area,the varieties of K.coccinea were mixed,with great differences in fruit quality and yield,which makes it impossible to realize large-scale planting.In view of these problems,a series of studies have been carried out and the technical regulations for standardized planting of rare and multi-purpose wild fruit K.coccinea were formulated.

Technical Management in Power Plant Constructionfor Export Contract

Regarding the technical management during construction of Thailand PTA Co-generation, there are some problems due to the typical method in electric power construction in China, which show the differences between international methods and ours. In order to do the technical management in the project for export contract, it is necessary to do the work based on the Contract, to know the related laws and regulations, and national conditions, to coordinate the relationship among various parties well, and to carry out the management ahead of time.

Accumulation and phytotoxicity of technical hexabromocyclododecane in maize

To investigate the accumulation and phytotoxicity of technical hexabromocyclododecane（HBCD）in maize,young seedlings were exposed to solutions of technical HBCD at different concentrations.The uptake kinetics showed that the HBCD concentration reached an apparent equilibrium within 96 hr,and the accumulation was much higher in roots than in shoots.HBCD accumulation in maize had a positive linear correlation with the exposure concentration.The accumulation of different diastereoisomers followed the orderγ-HBCD〉β-HBCD〉α-HBCD.Compared with their proportions in the technical HBCD exposure solution,the diastereoisomer contribution increased forβ-HBCD and decreased forγ-HBCD in both maize roots and shoots with exposure time,whereas the contribution ofα-HBCD increased in roots and decreased in shoots throughout the experimental period.These results suggest the diastereomer-specific accumulation and translocation of HBCD in maize.Inhibitory effects of HBCD on the early development of maize followed the order of germination rate〉root biomass≥root elongation〉shoot biomass≥shoot elongation.Hydroxyl radical（OH）and histone H2AX phosphorylation（γ-H2AX）were induced in maize by HBCD exposure,indicative of the generation of oxidative stress and DNA double-strand breaks in maize.An OH scavenger inhibited the expression ofγ-H2AX foci in both maize roots and shoots,which suggests the involvement of OH generation in the HBCD-induced DNA damage.The results of this study will offer useful information for a more comprehensive assessment of the environmental behavior and toxicity of technical HBCD.