Registration of Four Sunflower Germplasms Resistant to Race F of Broomrape

History of the race structure of Orobanche cumana and the breeding of sunflower for resistance to this parasitic weed: A review

“…In Serbia, Hladni et al (2009) developed five new restorer inbred lines resistant to race E from interspecific populations originating from H. deserticola. Genetic resistance to race E was reported in several studies to be controlled by a major dominant gene, Or 5 (Sukno et al, 1999;Lu et al, 2000;Pérez-Vich et al, 2004), although other studies indicated genetic control by two independent dominant genes (Domínguez, 1996b). Alonso (1998) noted that the genetic of resistance to O. cumana could be more complex than previously thought, suggesting that, in addition to the known major dominant resistant genes, other minor genes may be involved.…”

“…Alonso (1998) noted that the genetic of resistance to O. cumana could be more complex than previously thought, suggesting that, in addition to the known major dominant resistant genes, other minor genes may be involved. In fact, molecular studies focused on resistance to race E demonstrated that this resistance was controlled by the major dominant Or 5 gene mapping to a terminal, probably the telomeric region, of linkage group 3 (LG3) of the sunflower genetic map (Lu et al, 1999;Tang et al, 2003;Pérez-Vich et al, 2004;Márquez-Lerma et al, 2008), together with a quantitative component determined by four quantitative trait loci (QTL) with a minor effect associated with the number of broomrape shoots per plant (Pérez-Vich et al, 2004). Imerovski et al (2013) demonstrated that simple sequence repeat (SSR) markers of LG3 were also strongly associated with resistance genes Or 2 , Or 4 and Or 6 .…”

“…Later on, sources of resistance to race F were also scarce in germplasm of cultivated sunflower, although valuable resistant germplasm was identified in breeding programmes conducted in Spain (Rodríguez-Ojeda et al, 2001;Fernández-Martínez et al, 2004;Pérez-Vich et al, 2006), Romania (Pacureanu-Joita et al, 2004), and the dominant sunflower gene Or 5 (Rodríguez-Ojeda et al, 2013), but the inheritance of avirulence genes against other sources of resistance to the most virulent races is still unknown.…”

“…b NK: not known; the parasite was reported, but no information about race/s is known. Vrânceanu et al (1980), Akhtouch et al (2002), Pacureanu et al (2004), andPérez-Vich et al (2004).…”

Research on resistance to sunflower broomrape: an integrated vision

“…Russian breeders made extensive use of interspecific hybridization with H. tuberosus, not only for resistance to broomrape but also as a source of resistance genes for several diseases and pests (Skoric, 2012). The use of interspecific hybridization together with breeding methods based on recurrent selection, such as the "method of reserves" (Pustovoit, 1967) created a reservoir of resistance genes that has been one of the main sources for breeding for broomrape resistance until recently (Fernández-Martínez et al, 2004). Nevertheless, identifying resistance to the most virulent races in germplasm of cultivated sunflower has become increasingly difficult, which has demanded the identification of resistance sources in wild Helianthus spp.…”