Characterization of interspecific hybrids between cultural sunflower H.annuus L. (cv. Albena) and species Helianthus tuberosus
2003
Encheva, J. | Christov, M. | Ivanov, P. (Dobroudja Agricultural Institute, 9520 General Toshevo (Bulgaria))
By using the direct organogenesis method, applied for the first time at the Boitechnology laboratory of DAI,General Toshevo, new sunflower forms were obtained through distant hybridization from the cross H.annuuss cv. Albena x H.tuberosus.Three to eight hybrid plants were produced from a single embryo through the direct organogenesis method.This is a valuable method because it allows to obtain more than one plant from a hybrid embryo,something which is impossible with the commonly used embryo rescue technique.A considerable number of new sunflower lines were produced after self-pollination and individual selection.After characterization of the hybrid progenesis according to seventeen morphological and biochemical indices, the conclusion can be drawn that lines R101 and R104 show 58.8% and 70.6%,respectively, intermediate phenotype in comparasion to the two parental forms.Some of the R lines were directly induced in heterosis breeding of sunflower.
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