Comparison of three genetic similarity coefficients based on dominant markers from predominantly self-pollinating species

• Published in: Biologia plantarum Vol. 54; no. 1; pp. 54 - 60
• Main Authors: Beharav, A.,University of Haifa (Israel). Inst. of Evolution, Maras, M.,Agricultural Inst. of Slovenia, Ljubljana (Slovenia), Kitner, M.,Univerzita Palackeho, Olomouc (Czech Republic). Prirodovedecka Fakulta, Sustar-Vozlic, J.,Agricultural Inst. of Slovenia, Ljubljana (Slovenia), Sun, G.L.,Saint Mary's Univ., Halifax (Canada). Biology Dept, Dolezalova, I.,Univerzita Palackeho, Olomouc (Czech Republic). Prirodovedecka Fakulta, Lebeda, A.,Univerzita Palackeho, Olomouc (Czech Republic). Prirodovedecka Fakulta, Meglic, V.,Agricultural Inst. of Slovenia, Ljubljana (Slovenia)
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.03.2010; Institute of Experimental Botany of the Czech Academy of Sciences
• Subjects: Biomedical and Life Sciences; closely related individuals; DISTANCE GENETIQUE; DISTANCIA GENETICA; GENETIC DISTANCE; GENETIC MARKERS; GENETIC RESOURCES; GENETIC VARIATION; http://www.fao.org/aos/agrovoc#c_15975; http://www.fao.org/aos/agrovoc#c_24030; http://www.fao.org/aos/agrovoc#c_27530; http://www.fao.org/aos/agrovoc#c_3218; http://www.fao.org/aos/agrovoc#c_4147; http://www.fao.org/aos/agrovoc#c_5767; http://www.fao.org/aos/agrovoc#c_7953; LACTUCA; lactuca saligna; Life Sciences; MARCADORES GENETICOS; MARQUEUR GENETIQUE; negative matches; Original Papers; PHASEOLUS VULGARIS; Plant Sciences; RECURSOS GENETICOS; RESSOURCE GENETIQUE; TRITICUM DICOCCOIDES; VARIACION GENETICA; VARIATION GENETIQUE; closely related individuals; negative matches
• ISSN: 0006-3134; 1573-8264
• DOI: 10.1007/s10535-010-0008-0

Three genetic similarity coefficients were estimated and compared for their usefulness: simple matching, Jaccard's and Dice's, all based on dominant markers data from individuals representing predominantly self-pollinating species. AFLP markers were used to analyze 139 Phaseolus vulgaris and 67 Lactuca saligna accessions, and RAPD markers were used to analyze 110 Triticum dicoccoides accessions. Similar discriminating structure and power based on the three genetic similarity coefficients was found for each of the three species. This discriminating power was high for both P. vulgaris and L. saligna but moderate for T. dicoccoides. With closely related individuals, as in our study, the absence of a band in two individuals should be due to an identical cause inherited from the same ancestor. Accordingly we propose the use of simple matching, which alone out of the three examined coefficients involved shared absence of DNA bands, as contributing to genetic similarity. When RAPDs are employed, inferences about population structure and nucleotide divergence should be made with prudence as the nature of genetic variation uncovered by RAPDs is often unclear.