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四川凉山地区烟草黑胫病菌的ITS序列分析
烟草黑胫病 ITS 寄生疫霉 烟草
2015/8/20
本研究利用真菌核糖体基因转录间隔区(ITS)通用引物,PCR扩增四川省凉山州不同地区的20株烟草黑胫病菌的ITS序列,并对PCR产物进行了克隆测序。结果表明,20个供试菌株的ITS1-5.8S-ITS2总长均为803 bp;各菌株之间的ITS序列同源性达到99.3%以上;与GenBank报道的寄生疫霉台湾烟草分离株Phytophthora parasitica(GU111675.1)的同源性在99...
The Influence of Newspaper Aging on Optical Properties of its De-Inked Pulp
Aging Absorption Coefficient Brightness De-inking Yellowness
2009/10/9
The ever increasing volume of waste newspaper indicates the importance and availability of this paper for recycling. However, aging of the print, especially offset print, plays an important role in re...