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Influence of environmental factors on seed germination and seedling emergence of Oriental mustard (Sisymbrium orientale)

Published online by Cambridge University Press:  20 January 2017

Bhagirath S. Chauhan ,
Gurjeet Gill  and
Christopher Preston
Gurjeet Gill
Affiliation:
School of Agriculture, Food and Wine, The University of Adelaide, Roseworthy Campus, South Australia, 5371, Australia
Christopher Preston
Affiliation:
School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, South Australia, 5064, Australia
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Abstract

The effects of environmental factors on seed germination and seedling emergence of Oriental mustard were studied in laboratory and field experiments. Seed germination was stimulated by light; however, some germination occurred in the dark. In light/dark, potassium nitrate at 0.02 M stimulated germination of 1-mo-old seed to a maximum level of 45% as compared with the control (18%). Oriental mustard germination was inhibited by high levels of salt and osmotic stress. Seed germination was greater than 50% over a pH range of 4 to 10. Seedling emergence of 4- to 5-mo-old seeds was highest when present on the soil surface (70%) but declined with depth, and no seedlings emerged from a soil depth of 10 mm. In the field, seedling emergence was greater under no-till than minimum tillage systems.

Keywords

Oriental mustard, Sisymbrium orientale L. SSYORGerminationlighttillageweed seed
Type
Research Article
Information
Weed Science , Volume 54 , Issue 6 , December 2006 , pp. 1025 - 1031
Copyright
Copyright © Weed Science Society of America 

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