Epicotyl Dormancy in Viburnum Acerifolium (Caprifoliaceae)

Hidayati, Siti N., Baskin, Jerry M., Baskin, Carol C., The American Midland Naturalist

ABSTRACT.-

Seeds (true seed plus endocarp) of Viburnum arerifolium have underdeveloped linear embryos and deep simple epicotyl morphophysiological dormancy. Seeds mature and are dispersed in autumn, and radicles and epicotyls emerge the following autumn and late autumn-winter, respectively. Embryos in seeds incubated at 25/15 C became fully elongated in 16 wk, whereas those incubated at 5 C hardly grew at all. The optimum continuous temperature regime for both rate and percentage of radicle emergence was 25/15 C. At this regime, however, >20 wk were required for radicles to emerge in a high percentage of the seeds. GA^sub 3^ had little or no effect on radicle emergence. In …

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Publication information: Article title: Epicotyl Dormancy in Viburnum Acerifolium (Caprifoliaceae). Contributors: Hidayati, Siti N. - Author, Baskin, Jerry M. - Author, Baskin, Carol C. - Author. Journal title: The American Midland Naturalist. Volume: 153. Issue: 2 Publication date: April 2005. Page number: 232+. © 1995 University of Notre Dame, Department of Biological Sciences. Provided by ProQuest LLC. All Rights Reserved.

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