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Germination and Emergence of Virginia Buttonweed (Diodia virginiana)

Published online by Cambridge University Press:  12 June 2017

James H. Baird  and
Ray Dickens
James H. Baird
Affiliation:
Dep. Agron. and Soils and Alabama Agric. Exp. Stn., Auburn Univ., AL 36849-5412. Alabama Agric. Exp. Stn. J. Ser. No. 3-902457P
Ray Dickens
Affiliation:
Dep. Agron. and Soils and Alabama Agric. Exp. Stn., Auburn Univ., AL 36849-5412. Alabama Agric. Exp. Stn. J. Ser. No. 3-902457P
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Abstract

Virginia buttonweed seeds germinated at temperatures between 15 and 40 C, with optimal germination occurring at 25 or 30 C in 12 h light alternated with 15 to 25 or 20 to 30 C in darkness, respectively. Germination rate was lower in continuous darkness than in light. Germination was reduced under simulated water stress conditions with less than 10% of seeds germinating at osmotic potentials below −0.3 MPa. Overall seed germination was reduced under simulated flooding conditions; greater germination occurred in aerated water than in unaerated water. Maximum germination occurred at pH 6. Seedlings emerged from depths as great as 8 cm, with maximum emergence occurring from 2 cm.

Keywords

Virginia buttonweed (Diodia virginiana L.) # DIQVIWeed biologytemperaturelightpHwater stressdepth of emergence
Type
Weed Biology and Ecology
Information
Weed Science , Volume 39 , Issue 1 , March 1991 , pp. 37 - 41
Copyright
Copyright © 1991 by the Weed Science Society of America 

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