Five bacteria strains with higherchitinase activity were isolated by us-ing a technique of enriched cell wallof R. sola......

This study was done to determine the causal organism of the pear blossom and bud blast in China. It was identified by a ......

人工接菌条件下辣椒疫病发病速率r人工=0.2339,自然条件下疫病发病速率r大田=0.0745,接菌发病速率是大田自然发病速率的3.1倍.病原......