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Molecular and morphological diversity in Japanese rice germplasm

Published online by Cambridge University Press:  15 March 2011

Fátima Bosetti ,
Maria Imaculada Zucchi  and
José Baldin Pinheiro
Fátima Bosetti*
Affiliation:
Luiz de Queiroz College of Agriculture, University of São Paulo – ESALQ/USP, Piracicaba, Brazil
Maria Imaculada Zucchi
Affiliation:
Agronomic Institute of Campinas – IAC, Campinas, Brazil
José Baldin Pinheiro*
Affiliation:
Luiz de Queiroz College of Agriculture, University of São Paulo – ESALQ/USP, Piracicaba, Brazil
*
*Corresponding authors. E-mail: fatima@esalq.usp.br; baldin@esalq.usp.br
*Corresponding authors. E-mail: fatima@esalq.usp.br; baldin@esalq.usp.br
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Abstract

Germplasm molecular and phenotypic characterization is instrumental to its utilization and to genetic variability incorporation into rice breeding programmes. The diversity within 192 Japanese rice accessions was analysed for 22 agro-morphological traits and 24 single sequence repeat markers. A total of 181 alleles were detected, 38 of which were exclusive. The number of alleles/marker ranged from 2 to 16, with an average of 7.54 alleles/locus and the He value ranged from 0.01 to 0.82, with an average of 0.46. The accessions showed diversity at molecular and phenotypic level and few showed also good agronomic performance. Tocher's method applied on a total-dissimilarity matrix was used to determine cluster formation of 13 diversity groups. Most of the accessions (81%) were clustered within a group, whereas eight accessions (Kyuushuu, Eika Ine, Ishiwari Mochi, Col/Fukui/1965, Ookuma Nishiki, Suzume Shirazu, Iwate Ryoon and Toga) did not cluster with other accessions.

Keywords

germplasmmolecular markersmorphological traitsmultivariate analysesOryza sativa
Type
Research Article
Information
Plant Genetic Resources , Volume 9 , Issue 2 , July 2011 , pp. 229 - 232
Copyright
Copyright © NIAB 2011

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