Evaluation of techniques on breaking seed dormancy on four philippine inbred rice varieties

Paper Details

Research Paper 01/08/2019
Views (254) Download (7)

Evaluation of techniques on breaking seed dormancy on four philippine inbred rice varieties

May Basco Divina, Khristina G. Judan Cruz
Int. J. Biosci.15( 2), 414-421, August 2019.
Certificate: IJB 2019 [Generate Certificate]


This study evaluated the efficiency of six dormancy – breaking techniques on the germination of the four inbred rice varieties (PSB Rc82, NSIC Rc160, NSIC Rc218, NSIC Rc222) through the measurement of root and shoot length. This provides information to researchers, rice farmers and breeders in identifying the most efficient breaking dormancy techniques for the four inbred rice varieties to address the challenge of long seed dormancy period. The techniques used were soaking with water, sun drying, dry heat method or oven drying and chemical treatments, potassium nitrate (KNO3) and gibberellic acid (GA3).  Results from the treatments showed that at the seventh day of germination, soaking in water, sun drying, oven drying, and chemical treatments have achieved more than 90% of germination rate.  Amongst the treatments, oven drying at 50°C for 5 days and the use of 100ppm gibberellic acid (GA3) are the most effective, while seeds germinated on control treatment had a comparatively low effect. Furthermore, the effects of these dormancy – breaking techniques on shoot and root length showed potassium nitrate could induce both root and shoot length while GA3 produced the least length on root. Soaking with water had the shortest shoot measured amongst the treatments. Germination rate is not correlated with the length of shoot and roots. KNO3 induced both root and shoot length. GA3 had the highest germination rate and shoot length, and performed least on root length.


AgriInfo. 2017. Seed And Sowing- Methods To Break The Dormancy. Retrieved from:  https://agriinfo.in/seed-and-sowing-methods-to-break-the-dormancy-316/

Ahmadvand G, Soleimani F, Saadatian B, Pouya M. 2012. Effect of Seed Priming with Potassium Nitrate on Germination and Emergence Traits of Two Soybean Cultivars under Salinity Stress Conditions.American-Eurasian Journal of Agriculture & Environmental Science 12(6), 769-774. http://dx.doi.org/10.5829/idosi.aejaes.2012.12.06.1755

Banful B, Adjei PY, Achiaa NK. 2011. Effect of Seed Drying on Germination Behavior and Seedling Growth of Sweetsop (Annona squamosa). Journal of Agricultural Science and Technology 5(4), (Serial 35), ISSN 1939-1250, USA.

Baskin C, Baskin, JM. 2014. Seeds: Ecology, Biogeography, and Evolution of Dormancy and Germination. Academic Press, San Diego, 150-162.

Bewley JD, Black M. 1994. Seeds physiology of development and germination. The Language of Science. New York: Plenum Press. Page 230.

Finch-Savage, WE, Leubner-Metzger G. 2006. Seed dormancy and the control of germination. New Phytologist. Grain crop drying, handling and storage. pdf Chapter 16, p.363 Retrieved May 2016.

Ali HH, Tanveer A, Nadeem MA, Asghar HN. 2011. Methods to Break Sees Dormancy of Rhynchosia capitata, A Summer Annual Weed. Chilean Journal of Agricultural Research 71(3).

Karimmojeni H, Rashidi B, Behrozi D. 2011. Effect of different treatments on dormancy-breaking and     germination of perennial pepperweed (Lepidium latifolium) (Brassicaceae). Australian Journal for Agricultural Engineering 2(2), 50-55.

Koornneef M, Bentsink L, Hilhorst H. 2002. Seed dormancy and germination. Current Opinions in Plant Biology 5, 33–36.

Tung LD, Serrano EP. 2011. Effects of warm water in breaking dormancy of rice seed, Omonrice 18, 129-136.

Leubner-Metzger G. 2003. Functions and regulation of beta-1,3-glucanases during seed germination, dormancy release and after-ripening. Seed Science Research 13, 17–34.

Ogawa M, Hanada A, Yamauchi Y, Kuwahara A, Kamiya Y, Yamaguchi S. 2003. Gibberellin biosynthesis and response during Arabidopsis seed germination. Plant Cell 15, 1591–1604.

Olszewski N, Sun TP, Gubler F. 2002. Gibberellin signaling: biosynthesis, catabolism, and response pathways. Plant Cell (Suppl) 14, S61–S80 Physiology 141, 574–582

Naredo MEB, Juliano AB, Lu BR, de Guzman F, Jackson MT. 1998. Responses to Seed Dormancy-breaking treatments in Rice Species (Oryza L.). Seed Science and Technology 26, 675- 689.

Shafiq F, Batool H, Raza SH, Hameed M. 2015. Effect of Potassium Nitrate Seed Priming on Allometry of Drought-Stressed Cotton (Gossypium hirsutum L.). Journal of Crop Science and Biotechnology (September) 18(3), 195-204. http://dx.doi.org/10.1007/s12892-015-0035-7

Tilahun-Tadesse F, Nigussie-Dechassa R, Wondimu Bayu, Setegn Gebeyehu. 2013. Effect of hydro-priming and pre-germinating rice seed on the yield and terminal moisture stress mitigation of rain-fed lowland rice. Agriculture, Forestry and Fisheries 2(2), 89-97 http://dx.doi.org/10.11648/j.aff.20130202.15

Waheed A, Ahmad H, Abbasi FM. 2012. Different treatments of rice seed dormancy breaking, germination of both wild and cultivated varieties (Oryza sativa L.). Journal of Materials and Environmental Science 3(3), 551-560.