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31 October 2008 Morphological and Cytological Evidence for Homoploid Hybridization in Iochroma (Solanaceae)
Stacey De Witt Smith, Vanessa J. Kolberg, David A. Baum
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Abstract

Previous phylogenetic and biogeographic studies of Iochroma (Solanaceae) suggested that I. ayabacense S. Leiva is a hybrid between I. cyaneum (Lindl.) M. L. Green and I. lehmannii Bitter. Chromosome counts for these three taxa demonstrate that all have a haploid chromosome number of n  =  12, and thus that the formation of I. ayabacense did not involve changes in ploidy level. A comparison of vegetative and floral morphology revealed that I. ayabacense demonstrates a striking intermediacy between I. cyaneum and I. lehmannii. The results support the conclusion that I. ayabacense is a homoploid hybrid between I. cyaneum and I. lehmannii.

Stacey De Witt Smith, Vanessa J. Kolberg, and David A. Baum "Morphological and Cytological Evidence for Homoploid Hybridization in Iochroma (Solanaceae)," Madroño 55(4), 280-284, (31 October 2008). https://doi.org/10.3120/0024-9637-55.4.280
Published: 31 October 2008
JOURNAL ARTICLE
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KEYWORDS
Amotape-Huancabamba
chromosome number
homoploid hybridization
Iochroma
Solanaceae
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