N. Umiel, A. Hagiladi, Y. Ozeri, R. Elyasi, S. Abramsky, M. Kanza
Seeds are traded usually with a certificate of viability test, that indicates the percentage of germination. Geophytic plants (bulbs and corms) are traded mainly at the dormant stage. Anemone and Ranunculus corms are sold dry. The buyer of these corms does not have at the buying stage any information on the viability of this propagating material. The purpose of the present paper is to report on the development of a viability test for corms of Anemone and Ranunculus, and some of its applications for research on these two geophytic plants. The dry corms are immersed in running tap water for 2 to 12 hours, followed by a 20 minute soak in an aqueous solution of Captan (0.25%). The swollen corms are planted in a tray containing wet vermiculite (5 to 1 ratio of vermiculite/water, v/v), and incubated for 2 weeks at 17°C. At the end of the incubation period, the corms are removed, washed, and counted for viability percentage. A viable corm should produce roots and shoots in this treatment. The viability test was applied to corms undergoing hot-water treatment and prolonged storage period. Ranunculus corms stored under room temperature conditions started to lose their viability after 1 year, and after more than 2 years, were unfit for sale. Anemone corms could be stored under these conditions for more than 3 years, without a reduction in their viability. The viability of corms decreased in hot-water treatment as a function of both temperature and treatment duration. Ranunculus corms were more sensitive to hot-water treatment than were those of the Anemone.
Umiel, N., Hagiladi, A., Ozeri, Y., Elyasi, R., Abramsky, S. and Kanza, M. (1992). A STANDARD VIABILITY TEST FOR CORMS OF ANEMONE CORONARIA AND RANUNCULUS ASIATICUS. Acta Hortic. 325, 333-340
DOI: 10.17660/ActaHortic.1992.325.43

Acta Horticulturae