TY  - JOUR
T1  - Influence of L-Tryptophan and Melatonin on Germination of Onion and Leek Seeds at Different Temperatures
TT  - Influence of L-Tryptophan and Melatonin on Germination of  Onion and Leek Seeds at Different Temperatures
AU  - Hancı, Fatih
AU  - Çıngı, Mehmet
AU  - Akıncı, Hakan
PY  - 2019
DA  - June
DO  - 10.19159/tutad.559617
JF  - Türkiye Tarımsal Araştırmalar Dergisi
JO  - TÜTAD
PB  - Siirt University
WT  - DergiPark
SN  - 2148-2306
SP  - 214
EP  - 221
VL  - 6
IS  - 2
LA  - en
AB  - In this study, the effects of pre-sowing L-Tryptophan andMelatonin treatments on germination of onion and leek seeds under differenttemperature conditions were investigated. Seeds were treated with 125, 250, 375ppm L-Tryptophan and 5, 10, 25 uM Melatonin for 24 hours, then subjected togermination tests at optimum (21 ˚C) chilling stress (7 ˚C) and hot temperature(35˚C) conditions. Treated with distilled water seeds were considered ascontrols. Treatment of onion seeds with 125 ppm L-tryptophan had asignificantly positive effect on final germination ratio at 7˚C while in leekseeds, the 5 µM concentration of melatonin had a significant effect on thegermination index at the same temperature. In both Allium species, hormone treatments had no effect on meangermination time. These values decreased depending on the increase intemperature. The extreme level of high temperature burned certain percent ofseedlings, while at low temperature, seedlings were not harmed by colddomination.
KW  - L-Tryptophan
KW  - Melatonin
KW  - Onion
KW  - Leek
KW  - Germination
N2  - The aim of the study was toevaluate the influence of different L-tryptophan and melatonin concentrations onseveral germination parameters of onion and leek seeds under low andhigh-temperature conditions. The experiments were carried out in laboratories of theErciyes University. Seeds were treated with 125, 250, 375 ppm L-Tryptophan and 5, 10, 25 uMMelatonin for 24 hours, then subjected to germination tests at optimum (21 oC)chilling stress (7 oC) and hot temperature (35 oC)conditions. Seeds not treated were considered as controls. Treatment of onionseeds with 125 ppm L-tryptophan had a significantly positive effect on finalgermination ratio at 7 oC while in leek seeds, the 5 µMconcentration of melatonin had a significant effect on the germination index atthe same temperature. In both Allium species, hormone treatments had no effecton mean germination time. These values decreased depending on the increase intemperature. The extreme level of high temperature burned certain percent ofseedlings, while at low temperature, seedlings were not harmed by colddomination.
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UR  - https://doi.org/10.19159/tutad.559617
L1  - https://dergipark.org.tr/en/download/article-file/748318
ER  -