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2009, vol. 54, br. 1, str. 1-10
Odnos između heterozisa i genetske udaljenosti određena SSR markerima kod suncokreta (Helianthus annuus L.)
Naučni institut za ratarstvo i povrtarstvo, Novi Sad
Sažetak
Cilj rada je utvrdjivanje odnosa između genetske udaljenosti (GD) koja je određena SSR markerima (mikrosatelitima) kod novih inbred linija suncokreta i heterozisa za šest agronomskih svojstava. Ispitano je dvadeset tri inbred linije (dvadeset restorer linija i tri tester linije majki) i njihovi F1 hibridi za sledeća svojstva: visina biljke, prečnik glave, masa 1000 semena, sadržaj ulja u semenu, prinos semena i ulja po biljci. Zapažen je značajan heterozis kod hibridnih kombinacija za sva ispitivana svojstva sem za sadržaj ulja. Genetska udaljenost između parova ispitivanih inbred linija je bila od 0,13 do 0,8. Između genetske udaljenosti i heterozisa, posebnih kombinacionih sposobnosti i srednjih vrednosti svih ispitivanih svojstava, nije bilo značajne pozitivne korelacije. Jedina značajna vrednost, ali negativna, bila je u odnosu srednje vrednosti ulja i genetske udaljenosti (r=- 0.33 p<0.01). Iako se genetskom udaljenosti slabo može predvideti heterozis, bolji će se rezultati dobiti ako se analiziraju hibridne kombinacije za svaki tester i svako svojstvo pojedinačno.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/JAS0901001G
objavljen u SCIndeksu: 23.04.2009.

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