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Factors Influencing Germination of Field Violet (Viola arvensis)

Published online by Cambridge University Press:  12 June 2017

Douglas J. Doohan ,
Thomas J. Monaco  and
Thomas J. Sheets
Douglas J. Doohan
Affiliation:
Dep. Hortic. Sci., Prof. and Dir. Pestic. Residue Res. Lab., N.C. State Univ., Box 7609, Raleigh, NC 27695-7609
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., Prof. and Dir. Pestic. Residue Res. Lab., N.C. State Univ., Box 7609, Raleigh, NC 27695-7609
Thomas J. Sheets
Affiliation:
Dep. Hortic. Sci., Prof. and Dir. Pestic. Residue Res. Lab., N.C. State Univ., Box 7609, Raleigh, NC 27695-7609
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Abstract

Field violet germination occurred during May to early July and again during September to November in Nova Scotia (N.S.), Canada. Germination occurred from October until early April in the North Carolina (NC) piedmont. Germination was stimulated by tillage. Seed collected in N.S. and in NC germinated optimally in the dark under a temperature regime of 15/5 C, on an 8/16 h thermoperiod. Germination at constant temperatures decreased with increasing temperatures, from 5 to 25 C. Seed collected in NC was capable of germinating at a higher constant temperature of 25 C than seed collected in N.S. Germination of seed collected in NC was partially inhibited by constant irradiance with a photosynthetic photon flux density of 100 μM m−2 s−1 (400 to 700 nm). Seed did not germinate when exposed to constant red or far-red irradiance.

Keywords

Field violet, Viola arvensis Murr. # VIOARPPFD, photosynthetic photon flux densityTillageno-tillagearable weed responsetemperaturephotoperiodred lightweed biologyVIOAR
Type
Weed Biology and Ecology
Information
Weed Science , Volume 39 , Issue 4 , December 1991 , pp. 601 - 606
Copyright
Copyright © 1992 by the Weed Science Society of America 

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