Journal of the Japanese Society for Horticultural Science
Online ISSN : 1880-358X
Print ISSN : 0013-7626
ISSN-L : 0013-7626
Studies in Hibiscus V
Self- and cross-compatibility and hybridization (2)
Y. TACHIBANAY. IHARA
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1968 Volume 37 Issue 1 Pages 79-82

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Abstract

1) In the hope of obtaining new ornamental types of hardy Hibiscus, interspecific crosses were made between H. mutabilis L., an arboreal species of eastern Asia, and the perennial herbaceus species of North American origin, including H. militaris Cav., H. coccineus Walt. and H. moscheutos L.
2) Reciprocal crosses between the three herbaceous species resulted in the high percentages of fruit setting and the capsules obtained contained a number of well-developed fertile seeds, which germinated quite normally in every case.
3) Interspecific crosses between H. mutabilis and the three herbaceous species were successful only when the former was used as a mother plant. The percentage of fruit setting, the number of seeds obtained, and the viability of the seeds were all inferior to the corresponding figures in the mutual crosses of the North American species.
4) In the crosses, H. mutabilis×herbaceous species, better seed production was found in the later period of flowering season, whereas there were no appreciable seasonal differences in the self-pollination of each species and the combinations of the herbaceous species.

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