开拓创新锐意进取办好省级农业科技期刊——《广西农业科学》办刊实践

为了适应农业科研和生产发展的需要，《广西农业科学》编辑部在近年的办刊实践中积极探索，开拓创新，通过调整刊物定位向学术性期刊转变，增加版面和改进编辑流程缩短文章出版时滞，拓宽报道范围扩大影响力，加强与同行的交流学习，提升办刊理念，实行文稿校核质量控制体系，保证刊物质量，强化编辑队伍建设提高编辑人员业务素质，加强期刊经营增强期刊社经济实力等措施，使期刊的内外质量不断提高，社会效益和经济效益显著增强，期刊进入良性发展阶段。     

Leptin and its Receptor Expression in Swine Pituitaries Cultured under Deprived Conditions

Veterinary Research Communications -     

植物健康的综合管理(三)——正确使用土壤和基质

植物健康综合管理系统（IpHM）在保证根系健康生长方面确实起到了作用。这就对种植者提出了挑战。植物营养调节、水分管理、根／冠生长管理的成败取决于是否有健康的根系和成分配比适当的栽培基质。[编者按]     

Detection of a broad range of potato viruses in a single assay by mechanical inoculation of herbaceous test plants

To optimize mechanical inoculation of test plants as part of the regulated post-entry quarantine testing of stolon- and tuber-forming Solanum spp. (including potato), nine test plant species have been screened for their ability to detect 22 potato-infecting viruses. These included all the common mechanically transmissible potato viruses and most of the viruses found in potato incidentally. The symptoms observed after mechanical inoculation are shown for each combination of test plant species and virus. Under given conditions, Nicotiana occidentalis -P1 and Nicotiana hesperis -67A were found to detect reliably 20 and 18 out of 22 viruses respectively. These and former results on the seed-transmissible viruses and Andean potato mottle virus demonstrate that these Nicotiana species are very suitable for post-entry quarantine testing. Addition of either Chenopodium amaranticolor or Chenopodium quinoa to these two species may slightly extend the range of viruses. Therefore, using C. amaranticolor / C. quinoa , N. hesperis -67A and N. occidentalis -P1 for the biological screening of imported Solanum spp. will improve both the efficiency and the quality of post-entry quarantine testing.     

Sectioned pelvic fin ray ageing of muskellunge Esox masquinongy from a Virginia river: comparisons among readers, with cleithrum estimates, and with tag–recapture growth data

Abstract  The potential utility of pelvic fin rays as ageing structures was evaluated for southern US muskellunge Esox masquinongy Mitchill populations by comparing age estimates among three readers and against cleithrum estimates, and by comparing observed length changes of tagged fish with changes predicted from growth equations based on pelvic fin ray age estimates. Mean coefficient of variation in age estimates among all readers and between the two readers with prior ageing experience was 17.8% and 5.6%, respectively. Exact and within 1-year agreement rates between pelvic fin rays and cleithra were 76% and 100%, respectively. Mean (± 2 SE) estimated absolute error between observed and predicted length changes for 13 tagged muskellunge was 30 ± 14 mm. This evaluation indicated that pelvic fin rays may prove to be a useful, non-lethal method for ageing muskellunge in southern US waters. Validation studies are still needed to ensure that growth rings form consistently throughout fish's life span.     

棉籽粕营养成分最新调查

本介绍了对棉籽粕养分含量的最新调查结果，数据包括了平均值和变异范围。本应该对考虑在日粮中应用棉籽粕的营养师具有价值。