Mechanism of Seed Priming in Circumventing Thermodormancy in Lettuce
Open Access
- 1 June 1984
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 75 (2) , 290-294
- https://doi.org/10.1104/pp.75.2.290
Abstract
Lettuce (Lactuca sativa L. cv Minetto) seeds were primed in aerated solutions of 1% K3PO4 or water at 15°C in the dark for various periods of time to determine the manner by which seed priming bypasses thermodormancy. Seeds which were not primed did not germinate at 35°C, whereas those which were primed for 20 h in 1% K3PO4 or distilled H2O had up to 86% germination. The rate of water uptake and respiration during priming were similar regardless of soak solution. Cell elongation occurred in both water and 1% K3PO4, 4 to 6 h prior to cell division. Both processes commenced sooner in water than K3PO4. Radicle protrusion (germination) occurred in the priming solution at 21 h in water and 27 h in 1% K3PO4.This publication has 6 references indexed in Scilit:
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