članak: 1 od 1  
Helia
2003, vol. 26, br. 39, str. 19-24
jezik rada: engleski
neklasifikovan
doi:10.2298/HEL0339019V
Inheritance of the wide-range downy mildew resistance in the sunflower line RHA 419
(naslov ne postoji na srpskom)
Vear F.a, de Tourvieille Labrouhe D.a, Miller J.F.b
aINRA, UMR 1095 INRA, Université Blaise Pascal 'Amélioration et Santé des Plantes', 234, Avenue du Brézet, 63039 Clermont-Ferrand Cedex 2, France
bUS Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, P.O. Box 5677, Fargo, ND 58105, USA

e-adresa: vear@clermont.inra.fr

Sažetak

(ne postoji na srpskom)
Downy mildew resistance in the USDA inbred sunflower line RHA 419 was studied in F2 and test cross progenies from crosses with a susceptible line and with lines carrying known resistance genes. RHA 419 gives resistance to all races known at present, of type II, with frequent sporulation on cotyledons in seedling tests. The cross with a susceptible line indicated that one dominant gene imparted resistance to races 304 and 710. The progenies from crosses with lines carrying Pl5, Pl6 and Pl8 all showed segregation when tested with races 304, 710 and 730,generally agreeing with the hypothesis of two independent genes. It was concluded that RHA 419 provides a diversification of resistance and its use in breeding is discussed.

Ključne reči

Plasmopara halstedii; disease race; Helianthus annuus; test cross; durability; inheritance

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