The agamic complex of Pilosella (Asteraceae) in Bulgaria and SW Romania: variation in ploidy levels and breeding systems. Part 2.

• Autores: Anna Krahulcová, Vladimir Vladimirov, Frantisek Krahulec, Siegfried Bräutigam
• Localización: Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, ISSN 1310-7771, Vol. 22, Nº. 1, 2016, págs. 39-62
• Idioma: inglés
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• Resumen

  • Chromosome numbers and breeding systems are given for a set of Pilosella species occurring in Bulgaria and SW Romania (Banat). All diploids and tetraploid accessions of P. bauhini and P. cymosa subsp. sabina were found sexual, and tetraploid P. pavichii both sexual and apomictic. One hexaploid accession of P. bauhini was found sexual, but semisterile. Other polyploids were apomictic. Ploidy levels are published for the first time for the following taxa: P. ×bodewigiana (3x), P. ×georgieffiana (5x, 6x), P. ×byzantina (2x), P. ×pintodasilvae (4x), P. ×pavichiodes (5x), and for an undescribed hybrid P. bauhini × P. onegensis (2x, 6x). Pilosella ×byzantina and P. ×pavichiodes are given for the first time for Bulgaria, and P. ×pintodasilvae is reported for the first time from the Balkan Peninsula.