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Germination and Emergence of Balloonvine (Cardiospermum halicacabum)

Published online by Cambridge University Press:  12 June 2017

S. K. Johnston ,
D. S. Murray  and
J. C. Williams
S. K. Johnston
Affiliation:
Res. Data Anal., Auburn Univ. Agric. Exp. Stn., Auburn, AL 36830
D. S. Murray
Affiliation:
Res. Data Anal., Auburn Univ. Agric. Exp. Stn., Auburn, AL 36830
J. C. Williams
Affiliation:
Res. Data Anal., Auburn Univ. Agric. Exp. Stn., Auburn, AL 36830
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Abstract

Concentrated sulfuric acid (H2SO4) scarification of balloonvine (Cardiospermum halicacabum L.) for 3 h reduced balloonvine seed coat thickness by 25%, and resulted in increased water absorption and maximum germination. Germination of balloonvine occurred at temperatures of 15 to 40 C with optimum germination occurring at 35 C. Intact balloonvine seed was more sensitive to simulated moisture stress than soybean [Glycine max (L.) Merr. ‘Bragg’]. No balloonvine germination occurred at osmotic potentials of −2 bars and less with intact seeds. Balloonvine seed with seed coats removed germinated at osmotic potentials of −8 bars. Maximum emergence of balloonvine occurred at the 1- and 3-cm depths with limited emergence at a depth of 12 cm.

Keywords

Biologyscarificationtemperatureand depth
Type
Research Article
Information
Weed Science , Volume 27 , Issue 1 , January 1979 , pp. 73 - 76
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

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