... to introduce drought-resistant gene/genes from wild to Helianthus annuus L. cultivated species. Interspecific hybridisation, backcross (six generations) and self-pollination (two generations), and a rigorous ...
... we startcreate hybrids genetically resistant to this pathogen, parental lines were backcrossed to introduce new genes usingresistant sources from maintainer line HA 335 and restorer line RHA 274. We test ...