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Maternal environment affects germination responses of rapeseed seeds to temperature stress and smoke solutions

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Abstract

The germination responses of rapeseed seeds derived from a single cultivar but developed under different environmental conditions to temperature stress and smoke are poorly understood. Accordingly, germination and thermo-dormancy induction potential of three rapeseed Trapper cultivar seed populations (P1–P3) from different area were studied in response to smoke water and charred straw solution both during and after exposure to temperature stress. Seed size and the potential for thermo-dormancy induction in response to temperature stress were higher in P2–P3 than P1. Also, the induction of thermo-dormancy at sub- (5 °C) and supra-optimal (35 °C) temperatures was significantly reduced in P1–P3 seeds after incubation under light. Application of undiluted smoke water and charred straw solution during temperature stresses resulted in more thermo-dormant seeds, especially in P2–P3. In contrast, application of both undiluted and diluted smoke water and charred straw solution after temperature stress decreased thermo-dormancy especially in P3 seeds and even more under light conditions. Thus, the maternal environment differentially affects thermo-dormancy induction potential and responses of rapeseed cultivars to environmental factors, so that seed produced under colder environments (P2–P3) has higher potentials for thermo-dormancy and different responses to smoke as compared to those from warmer environments (P1). The effects of prescribed burning on the volunteer rapeseed seed bank may differ depending on the prevailing agroclimatic conditions.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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This research did not receive any specific grant from funding agencies in the public and commercial.

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Correspondence to Farshid Ghaderi-Far.

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Communicated by A. Gniazdowska-Piekarska.

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Gorzin, M., Ghaderi-Far, F., Sadeghipour, H.R. et al. Maternal environment affects germination responses of rapeseed seeds to temperature stress and smoke solutions. Acta Physiol Plant 45, 107 (2023). https://doi.org/10.1007/s11738-023-03590-z

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  • DOI: https://doi.org/10.1007/s11738-023-03590-z

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