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Journal of Biological Sciences
Year: 2009  |  Volume: 9  |  Issue: 2  |  Page No.: 137 - 144

Characterization of Interspecific Hybrid Between F. tataricum and F. esculentum

M. Asaduzzaman, M. Minami, K. Matsushima and K. Nemoto    

Abstract: Cultivated tartary buckwheat (Fagopyrum tataricum) was successfully hybridized with cultivated common buckwheat (Fagopyrum esculentum). Both diploid (2n = 16) and tetraploid (2n = 32) and hybrids were produced from interspecific crosses using ovule rescue method. The produced hybrid was confirmed using plant morphological characters, cytological characters and DNA analysis. The morphological characteristics of the hybrids and parent species are described along with estimation of genetic variation of the hybrids. Self-compatibility together with homomorphism has been introduced from F. tataricum to F. esculentum. Inheritance of flower color in the hybrids was found to be intermediate, whereas pin-style flowers and round shape seeds were found to be dominant over homomorphism and non-winged seeds. There were no obvious differences between the two species in efficiency of pollination. The meiotic observations were accorded with high seed fertility of F1 hybrids and produced normal seeds. These observations indicated that the genetic resemblance and chromosome affinity in the hybrids and parental chromosome supported the fertility of the hybrids.

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