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Primary Dormancy and Seedling Emergence of Black Nightshade (Solanum nigrum) and Hairy Nightshade (Solanum physalifolium)

Published online by Cambridge University Press:  20 January 2017

Alireza Taab  and
Lars Andersson
Alireza Taab*
Affiliation:
Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
Lars Andersson
Affiliation:
Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
*
Corresponding author's E-mail: [email protected]
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Abstract

Variation in primary dormancy among populations of black nightshade and hairy nightshade collected on two dates was investigated. In addition, emergence characteristics of both species were studied during 2 yr with several populations and soil disturbance regimes. Results revealed a variation in the level of primary dormancy among populations and collection dates in black nightshade. However, fresh seeds of hairy nightshade showed no or negligible germinability, indicating a deeper level of dormancy. Emergence was higher in black nightshade than in hairy nightshade in both years, but with significant differences among populations. In addition, various categories regarding the soil temperature requirements for seedling emergence were found within seed batches. This enables the species to extend their emergence timing and therefore escape from climatic extremes or weed control operations. This information can be used to improve weed management strategies by timing weed control measures to larger seedling flushes.

Keywords

Black nightshade, Solanum nigrum L., SOLNIhairy nightshade, Solanum physalifolium Rusby, SOLSA.Dormant seedssoil stirringdormancy reductiondormancy inductionseedling recruitment
Type
Weed Biology and Ecology
Information
Weed Science , Volume 57 , Issue 5 , October 2009 , pp. 526 - 532
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: Department of Agronomy, Faculty of Agriculture, Ilam University, 69315-516 Ilam, Iran.

References

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