Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. I. Aging and Temperature
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The effects of aging and temperature on teliospore germination in Uromyces appendiculatus var. appendiculatus were studied.
1. Indoor storage was good at ~ 4°C in the dark. Under these conditions spores remained dormant for ~ 9 mo, but thereafter germination gradually increased to a maximum (~ 63 %) after 36 mo. Spores stored outdoors showed a marked increase in germination after ~ 4 mo and reached maximum (~ 73 %) at 7-8 mo.
2. The optimum temperature for germination was at 18°C. While freezing (-18°C) and thawing (20°C) had no beneficial effect on spore germination, heat treatments from 30-32°C for 3-4 d proved effective in activating teliospore germination. Heat treatments caused an increase in spore mortality. Basidiospore release from heat-treated teliospores was markedly reduced compared to control spores.
3. In all experiments the emergence of metabasidia was preceded by an obligatory 3-5 d lag period regardless of the treatment given, the age or level of germinability of treated and control spores.
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GOLD, Randall E., Kurt MENDGEN, 1983. Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. I. Aging and Temperature. In: Phytopathologische Zeitschrift. 1983, 108(3/4), pp. 267-280. ISSN 0031-9481BibTex
@article{Gold1983Activ-8612, year={1983}, title={Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. I. Aging and Temperature}, number={3/4}, volume={108}, issn={0031-9481}, journal={Phytopathologische Zeitschrift}, pages={267--280}, author={Gold, Randall E. and Mendgen, Kurt} }
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