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Biometrical Letters

The Journal of Polish Biometric Society

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Analysis of the relationship between coefficients of relatedness and molecular similarity of parental forms with respect to the heterosis effect in maize

Agnieszka Tomkowiak / Zbigniew Broda
  • Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland
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/ Krzysztof Moliński
  • Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Poznań, Poland
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/ Marta Molińska-Glura
  • Department and Laboratory of Computer Science and Statistics, Karol Marcinkowski University of Medicine in Poznań, Dąbrowskiego 79, 60-529 Poznań, Poland
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/ Józef Adamczyk
Published Online: 2013-06-05 | DOI: https://doi.org/10.2478/bile-2013-0016


Within the last twenty years studies have been conducted at many research centers with the aim of dividing breeding materials into heterotic groups based on molecular markers. Molecular techniques make it possible to study the genetic purity of inbred lines, determine their genetic variability and classify breeding materials for which no information is available on their origin. This study aims to investigate relationships between coefficients of relatedness (pedigree analysis) and molecular similarity estimated on the basis of AFLP and RAPD molecular markers, between parental forms of F1 maize hybrids. Determination of these relationships will make it possible to establish a hierarchy of importance for applied methods concerning selection of parental components for heterotic crossings based on the degree of relatedness and genetic similarity. As a result of the experiment it was shown that in the case of incomplete pedigree information, in the selection of parental components for crossings we may use information concerning molecular similarity determined using AFLP markers and the Jaccard index, which to the least degree differentiates matrices of AFLP and RAPD molecular similarity.

Keywords : relationship; molecular similarity; maize; AFLP; RAPD

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About the article

Published Online: 2013-06-05

Published in Print: 2013-06-01

Citation Information: Biometrical Letters, Volume 50, Issue 1, Pages 39–52, ISSN (Print) 1896-3811, DOI: https://doi.org/10.2478/bile-2013-0016.

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