Back to Search Start Over

Dependence of the Heterosis Effect on Genetic Distance, Determined using Various Molecular Markers

Authors :
Agnieszka Tomkowiak
Przemysław Łukasz Kowalczewski
Michał Kwiatek
Jan Bocianowski
Source :
Open Life Sciences, Open Life Sciences, Vol 15, Iss 1, Pp 1-11 (2020)
Publication Year :
2020
Publisher :
De Gruyter, 2020.

Abstract

A number of studies have shown that the greater the genetic diversity of parental lines, the greater the heterosis effect. Genetic or phenotypic variation can be estimated by genotype testing on the basis of the observations obtained through prediction (a priori) or the observations and studies (a posteriori). The first method uses data such as the genealogy of a given subject and the information about its geographical origin. The second method is based on the phenotypic observation and studies, as well as on the molecular research. The development of molecular genetics and genotype testing methods at the DNA level has made it possible to rapidly assess the genetic variability regardless of the modifying effect of the environment. The aim of this study was to determine the relationship between the degree of relatedness and the DNA polymorphism (determined using AFLP, RAPD, and SSR markers) of inbred maize lines and the effect of hybrid-form heterosis. Our analysis demonstrated that the parental components for heterosis crosses can be selected on the basis of the genetic similarity determined using the molecular SSR markers and the Jaccard, Kluczyński, Nei, and Rogers coefficients. Molecular AFLP markers proved less useful for selecting the parental components, but may be used to group lines with incomplete origin data. In the case of the RAPD markers, no clear relationship between genetic distance and the heterosis effect was found in this study.

Details

Language :
English
ISSN :
23915412
Volume :
15
Database :
OpenAIRE
Journal :
Open Life Sciences
Accession number :
edsair.doi.dedup.....9864ff0262ffdbc52955b6ff9e73c4f5