Cross compatibility of Petunia cultivars and P. axillaris with native taxa of Petunia in relation to their chromosome number

Hitoshi Watanabe, Toshio Ando, Shin Ichi Iida, Akihiko Suzuki, Ken Ichi Buto, Tatsuya Tsukamoto, Goro Hashimoto, Eduardo Marchesi

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29 Scopus citations

Abstract

To obtain information about the breeding of garden petunias for future reference, we crossed six cultivars of petunias and their historical seed parent (Petunia axillaris subsp. axillaris) with 41 native taxa of Petunia sensu Jussien. The existence of two groups of the native taxa differing in their chromosome numbers (2n = 14 and 18) was confirmed. Petunia cultivaris (2n = 14) and P. axillaris subsp. axillaris (2n = 14) failed to set capsules when crossed with the taxa having a chromosome number of 2n - 18. In contrast, hybridizations were possible when they were crossed with taxa of 2n - 14, except for P. integrifolia subsp. occidentalis.

Original languageEnglish (US)
Pages (from-to)625-634
Number of pages10
JournalJournal of the Japanese Society for Horticultural Science
Volume65
Issue number3
StatePublished - Dec 1 1996

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