Improvement in sunflower emphasizes the urgency of generating heterotic hybrids that is achieved by tapping the excellent combining ability and heterotic vigour available in the genetically divergent material. Concomitant with major diseases prevailing largely and most of the sunflower experimental hybrids and cultivars being based on single cytoplasm, large scale cultivation of the crop finds itself in greater threat as evident by susceptibility tonew emerging diseases and declining yield levels over the decades. | Studies on fertility restoration using newly derived restorers in sunflower (Helianthus annuus L.)
