THE EFFICACY OF A SOAK TEST FOR PREDICTING THE PERFORMANCE OF IMPATIENS SEEDS IN PLUG PRODUCTION SYSTEMS.

in HortScience
Authors:
Paul T. KarlovichDepartment of Horticulture, Iowa State University, Ames, IA 50011

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David S. KoranskiDepartment of Horticulture, Iowa State University, Ames, IA 50011

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Fifteen lots of impatiens representing five cultivars were used to evaluate the potential of a soak test for predicting the performance of impatiens seeds in plug-production systems. This test would be valuable in breeding programs because it is non-destructive, seed-specific, inexpensive, fast, and does not require large numbers of seed. The soak test submerged individual seeds in one ml distilled water during germination. The results of this test were compared to standard blotter germination and to plug tray performance in the Iowa State University greenhouse and at two commercial greenhouses. Different responses to the soak test were found among lots and cultivars but the differences could not be correlated to the plug tray performance of the seeds. The responses to the soak test do not appear to be genetically related for these cultivars.

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