Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
J Econ Entomol. 2011 Jun;104(3):978-85. doi: 10.1603/ec11009.
The sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), causes severe crop losses to many crops. The worst of these losses are often associated with the invasion and establishment of biotypes B and Q of this pest. Previous research in 2007 showed that biotype Q occurred with other biotypes in most field populations in China. To determine the current status of the biotype composition in the field, an extensive survey covering mainly eastern parts of China was conducted in 2009. Using polymerase chain reaction primers specific for the mitochondrial cytochrome oxidase I of biotypes B and Q and gene sequencing, we determined the biotypes composition in 61 whitefly populations and their distribution across 19 provinces in China. Our research revealed that only biotypes B and Q have been found in the field in 2009 in China. Among them, biotype Q was dominant in 44 locations (100.0%) and biotype B was dominant in 17 locations (100.0%). The current survey indicates that biotype Q has rapidly displaced biotype B in most locations in China.
甘薯粉虱，烟粉虱（Gennadius）（半翅目：粉虱科），对许多作物造成严重的作物损失。这些损失中最严重的通常与该害虫的生物型 B 和 Q 的入侵和建立有关。2007 年的先前研究表明，在中国大多数田间种群中，生物型 Q 与其他生物型同时存在。为了确定田间生物型组成的现状，2009 年在中国东部地区进行了一次广泛的调查。使用针对生物型 B 和 Q 的线粒体细胞色素氧化酶 I 的聚合酶链反应引物和基因测序，我们确定了 61 个粉虱种群的生物型组成及其在中国 19 个省的分布。我们的研究表明，2009 年在中国田间仅发现了生物型 B 和 Q。其中，生物型 Q 在 44 个地点（100.0%）占优势，生物型 B 在 17 个地点（100.0%）占优势。目前的调查表明，生物型 Q 已在我国大多数地区迅速取代了生物型 B。
