Evaluation of Doubled Haploid Derivatives of the Flue-cured Nicotianatabacum cv. Wislica

A total of 51 doubled haploid (DH) derivatives of the flue-cured true-breeding tobacco variety Wislica were obtained via anther culture and colchicine-induced chromosome doubling. Of that number eight DH lines showed morphological aberrations and/or reduced vigour that made them unfit to be grown in the field. The remaining 43 DH lines were grown in 2001 under regular flue-cured tobacco management and evaluated for principal growth indicators, yield, curability and gross money returns from unit area. In 2002, the evaluation was scaled down to include 13 best performing DH lines of 2001. The DH lines showed a considerable variation for basic growth parameters. Usually, the DH lines had more leaves but were shorter than the parental genotype mostly due to shorter internodes. The majority of DH lines showed delayed flowering compared to the parental cultivar. Yields of cured leaves varied extensively, some of the DH lines yielding above and some below cv. Wislica. Curability measured as percentage of light (1st to 3rd) grades was generally lower in DH lines compared to that in cv. Wislica. However, because of the high leaf yield some of the DH lines were not inferior to the parental cultivar with respect to money returns from unit area