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Analysis of Genetic Diversity and Relationship in Purple Lettuce by TRAP
Technique |
WANG Ya-nan,HAN Ying-yan,FAN Shuang-xi*,BU Bin |
(Department of Plant Science and Technology,Beijing Agricultural College,Beijing 102206,China) |
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Abstract TRAP technique was used to analyze the genetic diversity and relationship of 47 purple lettuce
(Lactuca sativa L. ) species.20 pairs of TRAP primers amplified polymorphic bands were 430,and the
polymorphic rate was 67.08%.The genetic similarity coefficient was 0.706 3-0.982 8.The average Nei’s gene
diversity index and Shannon’s information index were 0.255 3 and 0.397 6,respectively,indicating that the low
degree of genetic diversity in purple lettuce.The cluster analysis divided these 47 species into 2 major groups,
and the Ⅱ group could be devided into 5 subgroups.The species with similar leaf morphology were clustered
together,they had closer genetic relationship.
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Received: 25 February 2014
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