Relationship between genetic distance and heterosis based on quantitative traits and SSR markers in sunflower
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The objective of this study was to determine the relationship between SSR based genetic distance (GD) of new NS sunflower inbred lines for most important agronomic traits and heterosis. Twenty three sunflower inbred lines (twenty restorer lines and three female lines used as testers) were selected based on their diverse genetic background for plant height, head diameter, thousand seed mass, oil content, seed yield per plant and oil yield per plant. Significant heterosis was observed in hybrid combinations for all examined traits except oil content. Genetic distance between pairs of tested sunflower inbred lines ranged from 0.13 to 0.8. There was no significant positive correlation between genetic distance and mid- and better-parent heterosis, specific combining ability and mean value in any of the examined traits for all 60 hybrids. A highly significant negative correlation was found between GD and mean oil percentage (r=-0.33 p<0.01). However significant correlations between GD and be...tter-parent heterosis for thousand seed weight were found for hybrids of the tester line HA-19 (r=0.43 p<0.05) and between GD and mid-parent heterosis for plant height for hybrids of the tester line HA-26 (r=0.47 p<0.05). Although GD was generally a poor predictor of heterosis, better results are obtained if hybrid combinations for each tester and each trait are analyzed separately.
Ključne reči:
correlations / genetic distance / heterosis / hybrid performance / sunflowerIzvor:
Proceedings, 17th International Sunflower Conference, 8-12. June 2008, Cordoba, Spain, 2008, 2, 519-524Izdavač:
- Paris : International Sunflower Association
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FiVeRTY - CHAP AU - Cvejić, Sandra AU - Panković-Saftić, D. AU - Jocić, Siniša AU - Škorić, Dragan PY - 2008 UR - http://fiver.ifvcns.rs/handle/123456789/3220 AB - The objective of this study was to determine the relationship between SSR based genetic distance (GD) of new NS sunflower inbred lines for most important agronomic traits and heterosis. Twenty three sunflower inbred lines (twenty restorer lines and three female lines used as testers) were selected based on their diverse genetic background for plant height, head diameter, thousand seed mass, oil content, seed yield per plant and oil yield per plant. Significant heterosis was observed in hybrid combinations for all examined traits except oil content. Genetic distance between pairs of tested sunflower inbred lines ranged from 0.13 to 0.8. There was no significant positive correlation between genetic distance and mid- and better-parent heterosis, specific combining ability and mean value in any of the examined traits for all 60 hybrids. A highly significant negative correlation was found between GD and mean oil percentage (r=-0.33 p<0.01). However significant correlations between GD and better-parent heterosis for thousand seed weight were found for hybrids of the tester line HA-19 (r=0.43 p<0.05) and between GD and mid-parent heterosis for plant height for hybrids of the tester line HA-26 (r=0.47 p<0.05). Although GD was generally a poor predictor of heterosis, better results are obtained if hybrid combinations for each tester and each trait are analyzed separately. PB - Paris : International Sunflower Association T2 - Proceedings, 17th International Sunflower Conference, 8-12. June 2008, Cordoba, Spain T1 - Relationship between genetic distance and heterosis based on quantitative traits and SSR markers in sunflower EP - 524 SP - 519 VL - 2 UR - https://hdl.handle.net/21.15107/rcub_fiver_3220 ER -
@inbook{ author = "Cvejić, Sandra and Panković-Saftić, D. and Jocić, Siniša and Škorić, Dragan", year = "2008", abstract = "The objective of this study was to determine the relationship between SSR based genetic distance (GD) of new NS sunflower inbred lines for most important agronomic traits and heterosis. Twenty three sunflower inbred lines (twenty restorer lines and three female lines used as testers) were selected based on their diverse genetic background for plant height, head diameter, thousand seed mass, oil content, seed yield per plant and oil yield per plant. Significant heterosis was observed in hybrid combinations for all examined traits except oil content. Genetic distance between pairs of tested sunflower inbred lines ranged from 0.13 to 0.8. There was no significant positive correlation between genetic distance and mid- and better-parent heterosis, specific combining ability and mean value in any of the examined traits for all 60 hybrids. A highly significant negative correlation was found between GD and mean oil percentage (r=-0.33 p<0.01). However significant correlations between GD and better-parent heterosis for thousand seed weight were found for hybrids of the tester line HA-19 (r=0.43 p<0.05) and between GD and mid-parent heterosis for plant height for hybrids of the tester line HA-26 (r=0.47 p<0.05). Although GD was generally a poor predictor of heterosis, better results are obtained if hybrid combinations for each tester and each trait are analyzed separately.", publisher = "Paris : International Sunflower Association", journal = "Proceedings, 17th International Sunflower Conference, 8-12. June 2008, Cordoba, Spain", booktitle = "Relationship between genetic distance and heterosis based on quantitative traits and SSR markers in sunflower", pages = "524-519", volume = "2", url = "https://hdl.handle.net/21.15107/rcub_fiver_3220" }
Cvejić, S., Panković-Saftić, D., Jocić, S.,& Škorić, D.. (2008). Relationship between genetic distance and heterosis based on quantitative traits and SSR markers in sunflower. in Proceedings, 17th International Sunflower Conference, 8-12. June 2008, Cordoba, Spain Paris : International Sunflower Association., 2, 519-524. https://hdl.handle.net/21.15107/rcub_fiver_3220
Cvejić S, Panković-Saftić D, Jocić S, Škorić D. Relationship between genetic distance and heterosis based on quantitative traits and SSR markers in sunflower. in Proceedings, 17th International Sunflower Conference, 8-12. June 2008, Cordoba, Spain. 2008;2:519-524. https://hdl.handle.net/21.15107/rcub_fiver_3220 .
Cvejić, Sandra, Panković-Saftić, D., Jocić, Siniša, Škorić, Dragan, "Relationship between genetic distance and heterosis based on quantitative traits and SSR markers in sunflower" in Proceedings, 17th International Sunflower Conference, 8-12. June 2008, Cordoba, Spain, 2 (2008):519-524, https://hdl.handle.net/21.15107/rcub_fiver_3220 .