Effect of pre-sowing treatment on seed germination and seedling vigour in endive and chicory
Tzortzakis N, G.
The influence of pre-sowing treatments using hydropriming, osmopriming and halopriming in laboratory and/or nursery tests on seedling emergence, seedling weight and plant growth of endive and chicory was examined. Halopriming (KNO<sub>3</sub>) or growth regulators (gibberelic acid; GA<sub>3</sub>) improved the rate of germination of endive and chicory and reduced the mean germination time needed. 30 min pre-sowing treatment with NaHClO<sub>3</sub>, methyl jasmonate and dictamus essential oil decreased seed germination as well as seed radicle length in vitro. In the nursery tests, pre-sowing treatments had in some extent impact on the upper part (fresh weight) of the seedling, while no major changes were observed for leaf number and root fresh weight. 6-benzylaminopurine (BAP) or NaHClO<sub>3</sub> treatment reduced plant growth of both species. The present study suggests that KNO<sub>3</sub> and secondly GA<sub>3</sub> treatments may improve rapid and uniform seedling emergence and plant development in nurseries and/or in greenhouses, which is easily applicable by nursery workers with economic profits.
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