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Genetic Diversity of Medicago ruthenica Based on SSR Markers

Zhao Chen-gui

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Abstract

The genetic diversity of Medicago ruthenica.distributed in Inner Mongolia was analyzed using simple sequence repeat(SSR) markers.66 bands were amplified from 4 natural populations by 12 reliable primers.A high level of genetic diversity was revealed.The Nei's gene diversity index was 0.2222 and the Shannon diversity index was 0.3639.The total gene diversity was 0.2223,while the gene diversity within population was 0.2153,96.88% of genetic variation existed within populations,while 3.12% of genetic variation existed among populations.The genetic differentiation coefficient was 0.0312.The gene flow was 15.5256.There was certain degree of differentiation among populations.However the genetic drift could not cause genetic differentiation,the UPGMA dendrogram indicated that populations with similar ecological and geographical conditions clustered first.

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What this paper is about

The genetic diversity of Medicago ruthenica.distributed in Inner Mongolia was analyzed using simple sequence repeat(SSR) markers.66 bands were amplified from 4 natural populations by 12 reliable primers.A high level of genetic diversity was revealed.The Nei's gene diversity index was 0.2222 and the Shannon diversity index was 0.3639.The total gene diversity was 0.2223,while the gene diversity within population was 0.2153,96.88% of genetic variation existed within populations,while 3.12% of genetic variation existed among populations.The genetic differentiation coefficient was 0.0312.The gene flow was 15.5256.There was certain degree of differentiation among populations.However the genetic drift could not cause genetic differentiation,the UPGMA dendrogram indicated that populations with similar ecological and geographical conditions clustered first.

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Available abstract

The genetic diversity of Medicago ruthenica.distributed in Inner Mongolia was analyzed using simple sequence repeat(SSR) markers.66 bands were amplified from 4 natural populations by 12 reliable primers.A high level of genetic diversity was revealed.The Nei's gene diversity index was 0.2222 and the Shannon diversity index was 0.3639.The total gene diversity was 0.2223,while the gene diversity within population was 0.2153,96.88% of genetic variation existed within populations,while 3.12% of genetic variation existed among populations.The genetic differentiation coefficient was 0.0312.The gene flow was 15.5256.There was certain degree of differentiation among populations.However the genetic drift could not cause genetic differentiation,the UPGMA dendrogram indicated that populations with similar ecological and geographical conditions clustered first.

Key concepts: Genetic diversity, Biology, UPGMA, Genetic variation, Gene flow, Dendrogram, Diversity index, Population

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