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Comparative analysis of genetic diversity using molecular and morphometric markers in Andrographis paniculata (Burm. f.) Nees

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Title Comparative analysis of genetic diversity using molecular and morphometric markers in Andrographis paniculata (Burm. f.) Nees
 
Creator Lattoo, Surrinder K.
Dhar, Rekha S.
Khan, Shabnam
Bamotra, S.
Bhan, Maharaj K.
Dhar, Autar K.
Gupta, Kuldip K.
 
Subject Biological Sciences
 
Description Andrographis paniculata is a medicinal plant of immense therapeutic value. The present study was aimed to elucidate its genetic diversity based on morphochemical and RAPD
markers from 53 accessions belonging to 5 ecogeographic
regions. Analysis of variance and D2 statistics revealed significant differences in all the metric traits and sufficient inter-cluster distances indicating considerable diversity among the accessions. The complementary approach of RAPD was used to evaluate the genetic dissimilarities
among all the accessions using 6 highly polymorphic primers. The average proportion of polymorphic loci across primers was 96.28%. The molecular genetic diversity based on Shannon index per primer averaged 5.585 with values
ranging from 3.08 to 8.70 indicating towards wide
genetic base. RAPD based UPGMA and D2 cluster analysis also revealed that various accessions available in different eco-geographic regions might have originated from native places of wild abundance. Similarity matrices were generated
for molecular markers and morphometric data to determine the degree of congruence between the two. A highly significant but low correlation(r = 0.547, P < 0.001) was obtained thus implying the correspondence between the two. The species is hermaphroditic and a habitual inbreeder. The
present study yielded a typical triangular congruence
between its breeding system, morphometric traits and RAPD markers thus elucidating the usefulness of complementary approaches to make diversity analysis more explanatory and purposeful for optimum genetic amelioration and effective
conservation of its genotypic variability.
 
Date 2008
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://iiim.csircentral.net/232/1/10.1007s10722-007-9212-y.pdf
Lattoo, Surrinder K. and Dhar, Rekha S. and Khan, Shabnam and Bamotra, S. and Bhan, Maharaj K. and Dhar, Autar K. and Gupta, Kuldip K. (2008) Comparative analysis of genetic diversity using molecular and morphometric markers in Andrographis paniculata (Burm. f.) Nees. Genetic Resources and Crop Evolution, 55 (1). pp. 33-43. ISSN 0925-9864
 
Relation http://dx.doi.org/10.1007/s10722-007-9212-y
http://iiim.csircentral.net/232/