Germination of Primed Seed in Spinach (Spinacia Oleracea L.): Influence of Dried Back Treatment and Storage Temperature

News source: Taiwan Seed Improvement and Propagation Station, Taiwan ROC
For further information: ymhuang@www.tss.gov.tw, 2003-06-01

Priming to Increase Germination Rate

Primed seeds of spinach (Spinacia oleracea L.) in osmotic solutions -0.8Mpa of polyethylene glycol `6000' (PEG) markedly improved germination rate at 15oC and 30oC. Primed seeds can be dried and stored for 30 days without losing their improved capacity.

Effect of Storage Temperature on Germination Rate

However, different temperatures for the dry back treatment of the primed seeds will more or less affect the germination rate. Results of the storage test for 30 days showed that there is an interaction effect between temperature for drying back and temperature for storage. Drying back the primed seeds by exposure to the atmosphere at 15oC and to room temperature appeared to exhibit greater cumulative germination rate. Storage temperatures of 20oC, 10oC, and 5oC had no significant effect on germination rate of all the seeds after drying treatments, but only those seeds dried back at room temperature can keep their improved capacity for 30 days at 30oC storage condition.

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