Impact of Hydro, Organic, Hormonal and Osmo Priming Treatments on Coriander (Coriandrum sativum L.) Seed Quality

Abstract

A popular pre-sowing method for improving seed quality, germination effectiveness, and early seedling vigor is seed priming. Crop establishment and productivity in coriander are frequently restricted by inadequate and irregular germination. Several priming techniques, including hydropriming, organic priming, hormone priming, and osmopriming, have been investigated to address these issues by boosting stress tolerance, enhancing germination performance, and activating early metabolic processes. The experiment was conducted at the Seed Technology Laboratory, Department of Seed Science and Technology, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, using a completely randomized design. The following treatments were used for study: T0- Control, T1- hydropriming for 24 hours soaking, T2- Vermi wash 15% for 24 hours soaking, T3- Cow urine 20% for 24 hours soaking, T4- Panchgavya 15% for 24 hours soaking, T5- Humic acid 20% for 24 hours soaking, T6- GA3 50 ppm for 24 hours soaking, T7- NAA 50 ppm for 24 hours soaking, T8- Cytokinin 100 ppm for 16 hours soaking, T9- KNO3 3% for 16 hours soaking, and T10- NaCl 4 g/l for 16 hours soaking. T6-50 ppm solution of GA3 soaking for 24 h showed better performance as compared to other treatments for 1000 seed weight (11.96), standard germination (96.38), peak value of germination (21.63), mean daily germination (4.59), germination value (99.21), seedling length (20.43), seedling dry weight (2.97), vigour index-I (1968.98) and vigour index-II (286.47). T2-15% solution of Vermiwash soaking for 24 h was found superior for the relative growth index (99.20). The results indicate that seed enhancement approaches can incorporate both chemical and organic priming techniques, with GA₃ exhibiting the greatest potential for enhancing the quality and production of coriander seeds.