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Notes: Twins and Triplets of American Elm

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Abstract:

Multiple seedlings occurred at frequencies ranging from .05 to 0.4 per thousand seeds from wind-pollinated elm street trees. Unequal vigor was common between siblings and less vigorous seedlings usually died after initial expansion of the first true-leaf pair. All multiple seedlings were tetraploid. Forest Sci. 20:142.

Keywords: Ulmus americana; cytogenetics; polyembryony

Document Type: Miscellaneous

Affiliations: Former Graduate Research Assistant, Dept. of Forestry, Univ. of Wisconsin, Madison

Publication date: June 1, 1974

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