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Possibility of intergeneric hybrids between loquat (Eriobotrya japonica lindl.) and other Rosaceae plants  [2007]

Fukuda, S.(Nagasaki-ken. Fruit Tree Experiment Station, Omura (Japan)) Yamamoto, T. Tominaga, Y. Nesumi, H.

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Intergeneric hybridizations were carried out between loquat (Eriobotrya japonica Lindl.) and other Rosaceae plants in order to obtain the basic information on intergeneric hybrids. In 4 out of 8 crosses, 4-25% pollinated flowers bore fruits, however, 4 seeds were obtained from the cross of E. japonica cultivar 'Mogi' and Rhaphiolepis indica. Parentage of 4 individuals derived from an intergeneric cross of E. japonica x R. indica, was analyzed using 8 SSR (simple sequence repeat) markers. In 3 out of 4 individuals, the parent-offspring relationships were confirmed because the hybrids inherited SSR alleles from their parents without any discrepancy. Intergeneric hybrid seedlings showed similar leaf characters of R. indica. At the early stage, intergeneric hybrid seedlings died within 4 months after germination.