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Publication Information

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Title: Overcoming dormancy and enhancing germination of Sphaeralcea munroana seeds

Author: Kildisheva, Olga A.; Dumroese, R. Kasten; Davis, Anthony S.

Date: 2011

Source: HortScience. 46(12): 1672-1676.

Publication Series: Scientific Journal (JRNL)

Description: The results of a series of experiments involving a variety of dormancy-breaking treatments indicate that Munro's globemallow [Sphaeralcea munroana (Douglas) Spach] seeds are physically dormant, possess a cap-like structure in the occlusion of the water gap, which inhibits imbibition, and can be artificially dislodged through boiling water scarification. The highest germination capacity (93%) was achieved by mechanical scarification of previously stored seeds. Exogenous application of a gibberellin solution and cold stratification failed to enhance germination compared with scarification alone, indicating an absence of additional dormancy types. These results should improve the usefulness of this drought-tolerant perennial for landscaping and restoration given its effectiveness in soil stabilization, tolerance to a variety of soil types, extreme temperatures, and ecological importance.

Keywords: Munro's globemallow, Malvaceae, germination, imbibition, water gap, gibberellic acid

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Kildisheva, Olga A.; Dumroese, R. Kasten; Davis, Anthony S. 2011. Overcoming dormancy and enhancing germination of Sphaeralcea munroana seeds. HortScience. 46(12): 1672-1676.

 


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