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Environmental Factors Affecting Seed Germination and Seedling Emergence of Foxtail Sophora (Sophora alopecuroides)

Published online by Cambridge University Press:  05 September 2017

Iraj Nosratti ,
Sahar Amiri ,
Alireza Bagheri  and
Bhagirath Singh Chauhan
Iraj Nosratti*
Affiliation:
Assistant Professor, Assistant Professor, and Graduate Student, Department of Agronomy and Plant Breeding, Faculty of Science and Agricultural Engineering, Razi University, Kermanshah, Iran
Sahar Amiri
Affiliation:
Assistant Professor, Assistant Professor, and Graduate Student, Department of Agronomy and Plant Breeding, Faculty of Science and Agricultural Engineering, Razi University, Kermanshah, Iran
Alireza Bagheri
Affiliation:
Assistant Professor, Assistant Professor, and Graduate Student, Department of Agronomy and Plant Breeding, Faculty of Science and Agricultural Engineering, Razi University, Kermanshah, Iran
Bhagirath Singh Chauhan
Affiliation:
Associate Professor, Centre for Plant Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland, Gatton, Queensland, Australia
*
*Corresponding author’s E-mail: [email protected]
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Abstract

Foxtail sophora is a widely distributed problematic weed in western Iranian dryland farming systems. Little information is available on seed germination and seedling emergence of this weed species in response to environmental and agronomic factors. This study was conducted to address this knowledge gap. Maximum seed germination (80%) occurred at 25 C and decreased at lower temperatures (<1% at 5 C) or under fluctuating temperature regimes. Light and pH did not have any substantial effect on seed germination. Foxtail sophora was tolerant to osmotic stress and moderately tolerant to sodium chloride. It was tolerant to salinity and drought stress during germination, which suggests that the population of this weed may increase in western farmlands of Iran. No seedlings emerged when seeds were buried at depths greater than 6 cm, which indicates that minimum- and no-till systems would increase seedling emergence of this species. Therefore, using sweep cultivators would be beneficial in management of foxtail sophora seedlings in the drylands of west of Iran.

Keywords

Foxtail sophoraSophora alopecuroides L.Burial depthconstant temperaturefluctuating temperaturelightosmotic stress
Type
Weed Biology and Ecology
Information
Weed Science , Volume 66 , Issue 1 , January 2018 , pp. 71 - 77
Copyright
© Weed Science Society of America, 2017 

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Footnotes

Associate Editor for this paper: Steven S. Seefeldt, USDA-ARS

References

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