STANDARDIZATION OF SOAKING DURATION AND OPTIMUM CHEMICALS FOR SEED PRIMING IN TOMATO

V. VAKESWARAN¹, C. ASWIN², M. RAJAVEL^3
1Department of Seed Science and Technology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
²Department of Seed Science and Technology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
³Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India

Received : 03-06-2022     Accepted : 27-06-2022     Published : 30-06-2022
Volume : 14     Issue : 6       Pages : 11411 - 11414
Int J Agr Sci 14.6 (2022):11411-11414

Keywords : Seed priming, Seed quality enhancement
Academic Editor : Oluk Aylin C., S. M. Chavan
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Seed Science and Technology; Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
Author Contribution : All authors equally contributed

Studies were undertaken to enhance seed quality in tomato seeds var PKM 1 in terms of germination and vigour through priming. In soaking duration standardisation, it was found that the tomato seeds imbibe the maximum amount of water and attains the maximum wet weight on 25 hours after soaking the seeds. The radical protrusion observed on 28 hours after the seed soaking. Hence the soaking duration for tomato var PKM 1 seed priming can be fixed as 25 hours. Tomato seeds were primed with chemical ingredients viz., of GA3 at 50,100,150,200 and 250ppm and KNO3 at 1,2,3,4 and 5% and KH2PO4 at 1,2,3,4 and 5% and succinic acid 100,200,300,400 and 500ppm soaking durations of 25 h to optimize the concentration. Seed priming with 50 ppm of GA3 recorded higher germination and recorded 7% increase over the unprimed seeds. Impact of priming was aslo expressed on the seedling vigour. Seed priming with KNO3 at 1% concentration for 25 hours soaking and drying back improves the germination percentage upto 9 %, KH2PO4 at 4 % concentration improves 16 % and succinic acid at 300 ppm improves 18 % germination over the unprimed seeds

1. Maguire J. (1962) Crop science, 2(2), 176-177.
2. Taylor A. and Harman G. (1990) Annual Review of Phytopathology, 28(1), 321-339.
3. Dezfuli P.M., Sharif-Zadeh F. and Janmohammadi M. (2008) J. Agric. Biol. Sci., 3(3), 22-25.
4. Nirmala K. and Umarani R. (2008) Seed Science and Technology, 36(1), 56-65.
5. Ponnuswamy A. and Vijayalakshmi V. (2011) Madras Agric. J., 98(10-12), 370-371.
6. Khan S.A., Z.K. Shinwari, and Rabbani M.A. (2013) Pak. J. Bot., 45(3), 871-876.
7. Okçu G., Kaya M.D. and Atak M. (2005) Turkish journal of agriculture and forestry, 29(4), 237-242.
8. Moosavi A., Tavakkol Afshari R., Sharif-Zadeh F. and Aynehband A. (2009) J. Food Agric. Environ., 7(3-4), 353-358.
9. Sivasubramaniam K., Geetha R., Sujatha K., Raja K., Sripunitha A. and Selvarani R. (2011) The Madras Agricultural Journal, 98, 197-209.
10. Lee S.S., and Kim J.H. (2000) Korean Journal of Crop Science, 45(2), 108-111.
11. Hassan M., Reddy K.R., Haque E., Faisal S.N., Ghasemi S., Minett A.I. and Gomes V.G. (2014) Composites Science and Technology, 98, 1-8.
12. Rehman A. and Ali A. (2015) Seedling, 14(18.6), 2.5.
13. Manonmani V., Begum M.A.J. and Jayanthi M. (2014) Res J Seed Sci., 7(1), 1-13.
14. McDonald M.B. (2004) Handbook of Seed Physiology: Applications to Agriculture, Benech-Arnold, RL and RA Sanchez (Eds.). Food Products Press, New York, 273-304.