Interspecific Hybridization between Arisaema sikokianum and A. serratum (Araceae) Confirmed through Nuclear and Chloroplast DNA Comparisons

DOI: 10.4236/ajps.2011.24061   PDF   HTML     4,523 Downloads   8,603 Views   Citations

Abstract

A morphologically intermediate plant between Arisaema sikokianum Franch. et Sav. and A. serratum (Thunb.) Schott has been newly found in Kochi Prefecture, Shikoku, Japan. The putative hybrid has the intermediate morphological characteristics of the parental species. Molecular analysis using PCR-RFLP of internal transcribed spacer (ITS) in nuclear DNA (nrDNA) indicates that the putative hybrid has a combined pattern of the two putative parent species. Moreover, the sequence result of chloroplast DNA (cpDNA) of the putative hybrid was identical to that of A. sikokianum. These results suggest that the putative hybrid is a hybrid between A. sikokianum and A. serratum and that it was formed by interactive gene exchanging via pollens from A. serratum to A. sikokianum. It is the first record of a hybrid between A. sikokianum and A. serratum.

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H. Hayakawa, H. Hamachi, K. Matsuyama, Y. Muramatsu, Y. Minamiya, K. Ito, J. Yokoyama and T. Fukuda, "Interspecific Hybridization between Arisaema sikokianum and A. serratum (Araceae) Confirmed through Nuclear and Chloroplast DNA Comparisons," American Journal of Plant Sciences, Vol. 2 No. 4, 2011, pp. 521-526. doi: 10.4236/ajps.2011.24061.

Conflicts of Interest

The authors declare no conflicts of interest.

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