Breeding sunflower cultivars for the northern latitudes

Development of short season sunflower hybrids has been the main objective of the Canadian sunflower breeding program. A gene pool created with 50 lines extracted from USSR open-pollinated varieties provided a good source of early inbred lines. The gene pool produced the lines CM447, CM469 and CM497 which were the basis for the superior early parental lines. Another early line, CM594, was extracted from Armavirec. CM447 and CM594 were converted to the cytoplasmic male sterile (cms) form, while CM469 and CM497 were used in the development of fertility-restorer lines. Hybrids from these lines and in combination with HA3O1, HA232, and NS39 resulted in up to 15 days earlier maturity than the standard hybrids, with good oil content, disease resistance and lodging resistance. An early dwarf hybrid. Sunwheat, developed by SeedTec shows good performance in late seeded tests, but it requires higher plant population and a narrow row spacing

Auringonkukan jalostaminen pohjoisille leveysasteille

Development of short season sunflower hybrids has been the main objective of the Canadian sunflower breeding program. A gene pool created with 50 lines extracted from USSR open-pollinated varieties provided a good source of early inbred lines. The gene pool produced the lines CM447, CM469 and CM497 which were the basis for the superior early parental lines. Another early line, CM594, was extracted from Armavirec. CM447 and CM594 were converted to the cytoplasmic male sterile (cms) form, while CM469 and CM497 were used in the development of fertility-restorer lines. Hybrids from these lines and in combination with HA3O1, HA232, and NS39 resulted in up to 15 days earlier maturity than the standard hybrids, with good oil content, disease resistance and lodging resistance. An early dwarf hybrid. Sunwheat, developed by SeedTec shows good performance in late seeded tests, but it requires higher plant population and a narrow row spacing.Auringonkukan jalostusohjelman päätavoite Kanadassa on lyhyen kasvukauden oloihin sopeutuneiden hybridilajikkeiden kehittäminen. Aikaisten sukusiitoslinjojen lähteenä on käytetty neuvostoliittolaisista vapaapölytyslajikkeista valittuja 50 linjaa. Tästä aineistosta polveutuvat linjat CM447, CM469 ja CM497. Aikainen linja CM594 on valittu Armavirec-lajikkeesta. CM447 ja CM594 on muutettu koirassteriileiksi (cms) linjoiksi, kun taas linjoja CM469 ja CM497 käytettiin lisääntymiskyvynpalauttajain, restorerien, kehittämisessä. Risteyttämällä näitä linjoja keskenään ja ulkomaisten alkuperien HA3O1, HA232 ja NS39 kanssa saatiin jopa 15 päivää verrannehybridejä aikaisempia alkuperiä, joiden öljypitoisuus on korkea ja jotka ovat taudinkestäviä ja lakoontumattomia. Aikainen kääpiö-hybridi Sunwheat, jonka on laskenut kauppaan SeedTec-yhtiö, menestyy hyvin myöhään kylvettynä, mutta vaatii tiheän kasvuston ja kapean rivivälin

Breeding sunflower cultivars for the northern latitudes

vokKirjasto Aj-KAuringonkukan jalostaminen pohjoisille leveysasteill