TY - JOUR ID - 68369 TI - The effect of different seed coating treatments on the seed germination of canola under drought and salinity stresses: using modeling approach JO - Journal of Crops Improvement JA - JCI LA - en SN - 2008-8337 AU - Taghizoghi, Shirin AU - Soltani, Elias AU - Allahdadi, Iraj AU - Sadeghi, Reza AD - M.Sc. Student of Agronomy, Department of Agronomy and Plant Breeding Sciences, Aboureyhan Campus, University of Tehran, Pakdasht, Iran. AD - Assistant Professor, Department of Agronomy and Plant Breeding Sciences, Aboureihan Campus, University of Tehran, Pakdasht, Iran. AD - Professor, Department of Agronomy and Plant Breeding Sciences, Aboureihan Campus, University of Tehran, Pakdasht, Iran. AD - Assistant Professor, Department of Entomology and Plant Diseases, Aboureihan Campus, University of Tehran, Pakdasht, Iran. Y1 - 2018 PY - 2018 VL - 20 IS - 3 SP - 577 EP - 593 KW - Hydrotime KW - Seed vigor KW - Threshold of drought tolerance KW - Threshold of salinity tolerance KW - Water potential DO - 10.22059/jci.2018.238846.1807 N2 - This research was conducted to investigate the effects of different seed coating treatments on the seed germination of canola under drought and salinity stresses. In order to, two factorial experiments were conducted based on completely randomized design with four replications in laboratory. In both experiments, one of the factors were 10 different seed coating treatments. The second factor was different in two experiments: in the first experiment, the levels of drought stress of 0, -0.8, -1, and -1.2 MPa were considered, and in the second experiment, the levels of salinity stress of 0, 7, 14 and 21 ds/m NaCl were investigated. Results indicated that the lowest hydrotime constant (θH) were observed in T9 (22.627 MPa h), T3 (22.538 MPa h), and T6 (22.263 MPa h). The lowest base water potential (Ψb (50)) were belonged to T4 (-1.332 MPa) and T1 (-1.324 MPa). The maximum of germination percentage under salinity stress (Gmax) was observed in T2 (86.75%). The highest threshold to salinity tolerance (Xo) was belonged to T3 (16.38 ds/m). The highest germination rate was belonged to T3 in all levels of salinity. Totally, seed coating treatments of T3, T6 and T9 were the best treatments under drought stress and T3 was the best treatment under salinity stress. UR - https://jci.ut.ac.ir/article_68369.html L1 - https://jci.ut.ac.ir/article_68369_2059609f3f1e969b993426f4a4771808.pdf ER -