Summary
Allohexaploid (2n = 108) F2 and F3 interspecific hybrids ofHibiscus cannabinus × H. sabdariffa were intermediate in their resistance to the cotton root-knot nematode (Meloidogyne incognita acrita Chitwood 1949) between their moderately resistant, tetraploid parent, roselle (Hibiscus sabdariffa L.) and their susceptible, diploid parent, kenaf (H. cannabinus L.). Whether or not this resistance, as measured by the amount of root galling, is sufficient to be of practical importance is not known at present. However, results were encouraging enough to suggest further testing of the hybrids for agronomic potential, stability, fertility, and response to root-knot, and other parasitic nematodes that attack this potentially important paper-pulp crop.
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Cooperative investigations of the Crops Research Division, Agricultural Research Service, US Department of Agriculture, and the Texas Agricultural Experiment Station.
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Wilson, F.D., Adamson, W.C. Reaction to the cotton root-knot nematodes and the pollen and seed fertility of kenaf-roselle (Hibiscus cannabinus × H. sabdariffa) allohexaploids. Euphytica 19, 349–355 (1970). https://doi.org/10.1007/BF01904213
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DOI: https://doi.org/10.1007/BF01904213