Seed germination and dormancy characteristics of a collection of rice genotypes of northern Kerala
DOI:
https://doi.org/10.25081/jsa.2025.v9.9592Keywords:
Seed germination, Dormancy, Speed of germination, Rice genotypesAbstract
An experiment was conducted at the Regional Agricultural Research Station, Pilicode (12.20° N, 75.16° E) of Kerala Agricultural University, to study the germination and dormancy characteristics of 27 rice genotypes cultivated in northern Kerala. The study revealed the significant variation among the genotypes with respect to percentage and speed of germination. At two weeks after harvest, ‘Japan Violet’ and ‘Manuratna’ showed the highest percentage of germination whereas ‘Kavungin poothala’ and ‘Kandorkutti’ exhibited the highest dormancy. Out of the seven very strong genotypes identified, ‘Kavungin poothala’ could reach 80% germination at seventh month after harvest only. Irrespective of the presence of dormancy, higher mean speed of germination among genotypes was observed at two months after harvest and similar vigour was maintained up to seven months. Among the genotypes, ‘Manuratna’ exhibited good germination even after one year. ‘Jeeakashala’ and ‘Chettadi’ also retained viability and vigour till one year though both exhibited seed dormancy at two weeks after harvest.
Downloads
References
Agrawal, R. L. (2008). Seed Technology. New Delhi, India: Oxford and IBH Publishing Co. Pvt. Ltd.
Chinnasamy, G. P., Sundareswaran, S., Renganayaki, P. R., & Vetivel, M. (2021). Radicle emergence test as a quick vigour test to predict field emergence performance in rice (Oryza sativa L.) seed lots. Journal of Applied and Natural Science, 13(S1), 86-93. https://doi.org/10.31018/jans.v13iSI.2805
Delouche, J. C., Burgos, N. R., Gealy, D. R., De San Martin, G. Z., Labrada, R., Larinde, M., & Rosell, C. (2007). Weedy rices: Origin, biology, ecology, and control (FAO Plant Production and Protection Paper No. 188, 144 p.). Rome, Italy: Food and Agriculture Organization of the United Nations.
Devika, R., Bai, N. R., & Kumary, S. L. (2004). ‘Uma’ (MO 16) and ‘Revathy’ (MO 17): Two promising rice varieties with seed dormancy. Journal of Tropical Agriculture, 42, 13-16.
GOK. (2023). A compendium of agricultural statistics: Kerala 2023. Government of Kerala, Directorate of Agriculture Development and Farmers’ Welfare.
Gopinath, P. P., Parsad, R., Joseph, B., & Adarsh, V. S. (2020). GRAPES (General R-shiny based analysis platform empowered by statistics): Web application for data analysis in agriculture.
Gupta, P. C. (1993). Seed vigour testing. In P. K. Agrawal (Ed.), Handbook of seed testing (pp. 242-249). Department of Agriculture and Cooperation, Ministry of Agriculture, Government of India.
Hanumanthappa, D., Vasudevan, S. N., Ibrahim, M., Shakuntala, N. M., Amaregouda, A., & Doddagoudar S. R. (2015). Studies on seed dormancy in paddy genotypes. The Ecosan, 9(1&2), 261-263.
Khare, D., & Bhale, M. S. (2016). Seed technology. Jodhpur, India: Scientific Publishers.
Kirubhakaran, S., Raja, K., Jerlin, R., & Chandrakumar, K. (2022). Assessment of status of seed dormancy in traditional rice varieties. The Pharma Innovation Journal, 11(8), 830-835. https://doi.org/10.22271/tpi.2022.v11.i8Sk.14854
Kulkarni, C. C., Lenka, D., Muduli, K. C., Bastia, D. N., Mohanty, S., Panda, R. K., Swain, S. K. & Monalisa, S. P. (2021). Assessment of seed dormancy in different rice varieties. Biological Forum – An International Journal, 13(4), 140-146.
Sahu, R. K., Patnaik, S. S. C., & Sah, R. P. (2020). Quality seed production in rice – NRRI research bulletin No. 27. Cuttack, India: ICAR-NRRI.
Srivastava, A., Singh, P., Maurya, M., & Chaudhary, A. (2012). Vigour assessment in rice (Oryza sativa L.) genotypes and their correlation to field emergence. Current Advances in Agricultural Sciences, 4(1), 60-61.
Vibhuti, V., Shahi, C., Bargali, K., & Bargali, S. S. (2015). Seed germination and seedling growth parameters of rice (Oryza sativa) varieties as affected by salt and water stress. Indian Journal of Agricultural Sciences, 85(1), 102-108. https://doi.org/10.56093/ijas.v85i1.46046
Published
How to Cite
Issue
Section
Copyright (c) 2025 V. P. Karthika, P. K. Retheesh, Rajesh Kalladan, T. Vanaja
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
.