@article{article_559617, title={Influence of L-Tryptophan and Melatonin on Germination of Onion and Leek Seeds at Different Temperatures}, journal={Türkiye Tarımsal Araştırmalar Dergisi}, volume={6}, pages={214–221}, year={2019}, DOI={10.19159/tutad.559617}, author={Hancı, Fatih and Çıngı, Mehmet and Akıncı, Hakan}, keywords={L-Tryptophan,Melatonin,Onion,Leek,Germination}, abstract={<p class="MsoNormal">In this study, the effects of pre-sowing L-Tryptophan and
Melatonin treatments on germination of onion and leek seeds under different
temperature conditions were investigated. Seeds were treated with 125, 250, 375
ppm L-Tryptophan and 5, 10, 25 uM Melatonin for 24 hours, then subjected to
germination tests at optimum (21 ˚C) chilling stress (7 ˚C) and hot temperature
(35˚C) conditions. Treated with distilled water seeds were considered as
controls. Treatment of onion seeds with 125 ppm L-tryptophan had a
significantly positive effect on final germination ratio at 7˚C while in leek
seeds, the 5 µM concentration of melatonin had a significant effect on the
germination index at the same temperature. In both <i>Allium </i> species, hormone treatments had no effect on mean
germination time. These values decreased depending on the increase in
temperature. The extreme level of high temperature burned certain percent of
seedlings, while at low temperature, seedlings were not harmed by cold
domination. </p>}, number={2}, publisher={Siirt University}