Chromosome number, genome size and heterochromatin evolution in diploid species of Ipomoea and related genera (Convolvulaceae: Convolvuloideae)
Charlys Seixas Maia Dornelas,
Felipe Nollet,
Rosemere dos Santos Silva
et al.
Abstract:Convolvuloideae is a group of plants formed by genera with n = 15 and high stability of chromosome numbers. Despite being stable, polyploidy is the main mechanism of karyotype evolution for the group and seems to be related to speciation events. The present work aimed to comparatively analyze the karyotypes of diploid species from Convolvuloideae, with emphasis on Ipomoea, using fluorochrome banding and genome size. New counts were recorded for five species belonging to Camonea and Ipomoea, all with 2n = 30. T… Show more
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