采用AFLP、SRAP 2种标记方法分别对2个烟粉虱Bemisia tabaci Gennadius种群（一品红、甘蓝）的多态性进行分析。结果表明，（1）2种方法平均每对引物组合产生的条带数分别为29.4和21.8。（2）AFLP法每对引物组合产生10～23条多态性带，平均17.20条，多态性带的比例平均为57.93%。SRAP法每对引物组合产生5～18条多态性带，平均13.3条，多态性带的比例平均为60.59%。（3）前者的基因多样性范围为0.150 3～0.283 8，平均为0.229 7；后者的基因多样性范围为0.097　7～0.291　1，平均为0.233　2。证明利用SRAP技术和AFLP技术研究烟粉虱的遗传多样性是有效的。

Polymorphism between poinsettia and cabbage populations was analyzed using SRAP (sequence-related amplified polymorphism) and AFLP (amplified fragment length polymorphism) markers. The results showed that the average amplified fragments per primer were 29.4 and 21.8 by AFLP and SRAP, respectively. There were 10～23 clear polymorphic bands per primer combination, with the average of 17.20. The percentage of polymorphic fragments was 57.93% by AFLP. spondingly, for SRAP, they were 5～18, 133 and 6059%, respectively. The gene diversity of AFLP and SRAP were 0.150 3～0.283 8 and 0.097 7～0.291 1, with the averages of 0.229 7 and 0.233 2, respectively. It seems that both AFLP and SRAP markers were efficient marker system for olymorphism analysis of Bemisia tabaci.

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