Artificial hybrids in Cryptocoryne (Araceae) 3. Hybridization between species from Borneo

 

Niels Jacobsen, Jan D. Bastmeijer, Takashige Idei, Isa Ipor, Suwidji Wongso & Marian Orgaard

 

ABSTRACT

Species of Cryptocoryne in Borneo vary in chromosome number; the most widely used and most successful hybrid combinations belong to the 2n = 34 group in combinations with 2n = 30, 2n = 36 and 2n = 68 species. The identification of Bornean species of Cryptocoryne is usually straightforward; only a few cases have proven difficult and these have been shown to represent natural interspecific hybrids. The present study demonstrates that artificial hybrids are easily created within the Bornean Cryptocoryne species, and it was possible to resynthesize some of the naturally occurring interspecific hybrids. We predict the existence of more naturallyoccurring hybrids than those presently known from Borneo.

 

KEYWORDS

Araceae, chromosome numbers, Cryptocoryne, natural & artificial hybridization, Borneo