Volume 60, Issue 3

Volume : 60
Issue : 3
   
Authors : Ali Asghar ALILOO, Fariba EZZATI, Seyyed-Hamid MUSTAFAVI
Title : INFLUENCE OF SEED MOISTURE CONTENT AND SALICYLIC ACID TREATMENTS ON LOW AND FREEZING TEMPERATURE TOLERANCE OF FENNEL SEEDS
Abstract : Integrated effects of salicylic acid (SA) priming, seed moisture content (MC) and temperature (Tem) during storage were investigated on germination and seedling performance of fennel seeds. Seeds were primed in 12h at 25 °C in darkness containing one of the following solutions: 0, 100, and 200 ppm salicylic acid (SA) then the seed moisture contents were adjusted to 8, 15, 22, 29 and 36%. Following preparations, seeds were immediately stored at +10, 0 and -10 °C for 15 days then subjected to germination test at 25 °C. Results revealed that interaction of MC×SA and MC×Tem were significant for germination percentage. In comparison with control, germination percentage (GP) increased significantly at 15%MC for SA pre-treatments and after that point, GP decreased. Response of seeds was depending on SA concentrations and higher concentration had inhibitory effects on all traits. The higher the moisture content of the seeds the more they were adversely affected by temperature and when seed moisture contents were greater than 15%, seeds lost their viability at freezing temperature. Salicylic acid pre-treatments did not induce viability tolerance to subzero temperature and seed moisture contents played a more powerful role for seed viability at given conditions. It found that accompanying of high seed moisture contents with chilling temperature during seed storage not only increased the germination percentage but also improved the seedling length.
For citation : Ali Asghar ALILOO, Fariba EZZATI, Seyyed-Hamid MUSTAFAVI (2014): INFLUENCE OF SEED MOISTURE CONTENT AND SALICYLIC ACID TREATMENTS ON LOW AND FREEZING TEMPERATURE TOLERANCE OF FENNEL SEEDS. Agriculture and Forestry, Vol. 60 Issue 3: 175-185.
Keywords : Foeniculum vulgare, germination, salicylic acid, freezing stress, seed storage
   
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