Water stress can induce quiescence in newly-germinated onion (Allium cepa L.) seedlings. |
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Authors: | W R Whalley J Lipiec W E Finch-Savage R E Cope L J Clark H R Rowse |
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Affiliation: | Silsoe Research Institute, Wrest Park, Silsoe, Bedford MK45 4HS, UK. richard.whalley@bbsrc.ac.uk |
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Abstract: | The effect of water stress on the early seedling growth of onions was studied by placing newly-germinated seedlings in vermiculite equilibrated at different water potentials. Roots and shoots elongated more at -0.29 than at -0.64 MPa, but did not elongate at -1.66 MPa. However, roots and shoots of seedlings that had been incubated in vermiculite at -1.66 MPa for up to 35 d resumed elongation when subsequently placed on wet filter boards. This suggests that water stress can induce quiescence in newly-germinated seedlings. |
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