Isolation of endophytic bacteria in roots of Panax ginseng and screening of antagonistic strains against phytopathogens prevalent in P. ginseng / 中国中药杂志

In this study, endophytic bacteria were isolated from roots of P. ginseng by plate culture method, and as a result, 40 endophytic bacterial strains were isolated, Bacillus spp. and Pseudomonas spp. were predominant. By confront culture method, two antagonistic endophytic bacterial strain, ge15 (Stenotrophomonas maltophilia) and ge25 (Bacillus sp. ) against Cylindrocarpon destructans, Sclerotinia schinseng and Alternaria pana were identified. The inhibition zone of ge15 to them were 5.5, 22.0, 14.8 mm, respectively; and which were 12.7,16.5,9.0 mm for ge25. The Results indicate that endophytic bacteria have biocontrol potential on ginseng pathogens, and which can be used as a bio-control factor on ginseng soilborne diseases control.

Quality testing and quality classification standard establishment of Trollius chinensis seeds / 中国中药杂志

<p><b>OBJECTIVE</b>To study quality test, and establish quality classification standard of Trollius chinensis.</p><p><b>METHOD</b>Seed purity, weight per 1 000 seeds, seed moisture content, seed viability and their exterior parameters of the seed samples from different producing areas were measured, K cluster analysis was applied for the data analysis.</p><p><b>RESULT AND CONCLUSION</b>Quality of T. chinensis seeds from different producing areas was analyzed, and the primary T. chinensis seed quality classification standard was established.</p>