SummarySomatic chromosome numbers of Actinidia deliciosa cvs. `Matua' (staminate clone), `Abbott' and `Bruno' (pistillate clones) a nd two native wild species, A. polygama and A. arguta were studied using the squash and flame-drying methods. The chromosome counts of the commercial cultivars were 2n=174, whereas those of A. arguta were 2 n=58, 116 and 174 and those of A. polygama were 58. These data confirm earlier findings that the basic chromosome number is x=29(11) and that with increasing polyploidy, the number of nucleoli increased correspondingly.

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