Meiotic analysis in two species of Cuscuta subgenus Grammica (Convolvulaceae)
Keywords:
Cuscuta argentinana var. argentinana, C. flossdorfii var. tucumanensis, holoparasitic plants, meiosisAbstract
Páez, Valeria de los A.; Aldo R. Andrada; María E. Lozzia. 2013. “Meiotic analysis in two species of Cuscuta subgenus Grammica (Convolvulaceae)”. Lilloa 50 (2). The genus Cuscuta inhabits tropical and subtropical regions around the world and it has reports of basic numbers x= 4, 7, 8, 14, 15. There are few cytogenetic backgrounds in Cuscuta subgenus Grammica which is typical of the new world. Cuscuta flossdorfii var. tucumanensis and Cuscuta argentinana var argentinana are two endemic taxa from Argentina and they live in mountainous regions since 2500 to 3000 m. Meiotic studies with conventional cytogenetic techniques were performed In both taxa which revealed 15II at diakinesis and irregularities in the first and second stage of the meiotic division. We repor t for the first time chromosome counts for these species and their ploidy levels were discussed.
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References
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