V. Karpagam S. Jebaraj S. Rajeswari


Rice is the most important staple food for more than half of the world’s population and also for most of the countries. A Line x Tester analysis was undertaken to study the nature of gene action for yield and drought tolerant traits. The ratio of SCA and GCA was less than unity for all the characters which revealed that the preponderance of non- additive gene action governing the traits concerned. The lines viz., ADT 43, ADT (R) 49, CO (R) 50 and the testers viz., PMK (R) 3, Chandikar and Anna (R) 4 were adjudged as the best general combiners for drought tolerant traits. The cross combinations viz., ADT 39 x Vellaichitraikar had exhibited significant values for dry root weight (9.66), root/shoot ratio (0.31), root length (3.82), number of roots per plant (37.08), root thickness (0.11), root volume (4.27) and root length density (0.03) ADT (R) 49 x Chandikar for 70 percent relative water content (8.85), dry root weight (18.03), dry shoot weight (40.55), root length (3.10), number of roots per plant (140.16) root thickness (0.38) and root volume (23.14) were found to be specific combiners for most of the drought tolerant traits. The cross combinations, viz., ADT 43 x Anna (R) 4, ADT (R) 49 x Chandikar and ADT 43 x PMK (R) 3 had highly significant standard heterosis. Breeding for drought tolerance in rice would be of immense value to the farmers economic health, family well-being and harmony in the society.


Download data is not yet available.


Metrics Loading ...




Combining, Drought, GCA, Heterosis and SCA

Abd Allah, A.A. (2004). A breeding study on drought toler-ance in rice (Oryza sativa L.). Egyptian Journal of Agricultural Research, 82 (1): 149-165.
Allard, R.W. (1960). Principles of Plant Breeding John Wiley and Sons, Inc. New York.
Bhattacharya, S. and Ghosh, S K. (2004). Association among yield related traits of 24 diverse land races of rice. Crop Research 27(1): 90-93.
Das, K., Pradhan, T. Ghosh, S. and Mishra, B.K. (2005). Evaluation of drought resistance characters of upland rice cultivars. Oryza, 42(2): 138-144.
Dhillon, B.S. (1975). The application of partial diallel crosses in Plant breeding – A review. Crop Improvment 2: 1-7.
Dixit, A.S. and Kumar, A. (2014). Rice Breeding for high grain yield under drought: Strategic solution to a complex problem pp 1- 15.
El-Mouhamady, A.A., Abdel-Sattar, A.A. and El-Seidy, E.H. (2013). Assessment of the degree of drought tolerance in rice through the environmental tests and molecular markers technique. Research Journal of Agriculture and Biological Sciences, 9(1): 40-57.
Ganesh, S.K., Vivekanandan, P. Nadarajan, N. Chandra Babu, R. Shanmugasundaram, P. Priya, P.A. and Manickavelu, A. (2004). Proceedings of Workshop on resilient crops for water limited environments. Cuernavaca, Mexico, pp.140.
Gnanasekaran, M., Vivekanandan, P. and Muthuramu, S. (2006). Combining ability and heterosis for yield and grain quality in two line rice (Oryza sativa L.) hybrids. Indian J.ournal of Genetics 66(1): 6-9.
Hanamaratti, N.G., Salimath, P.M. Mohankumar, H.D. and Shailaja, H. (2004). Genetic and physiological basis of breeding productive and drought tolerant genotypes in upland rice. Proceedings of workshop on resilient crops for water limited environments. Cuernavaca, Mexico, pp 100-101.
Hosseini, M., Nejad, R.H. and Tarang, A.R. (2005). Gene effects, combining ability of quantitative characteristics and grain quality in rice. Iranian Journal of Agricultural Sciences 36(1): 21-32.
Kempthorne, O. 1957. An Introduction to Genetic Statistics. John Wiley and Sons, Inc., New York, pp. 399-472.
Luu, T.N., Abdelbagi, L.M. Ismail, M. and Le, H. (2012). Introgression of salinity tolerance QTLs Saltol into AS996, the elite rice variety of Vietnam. American Journal of Plant Sciences 3: 981-987.
Malarvizhi, D., Thiyagarajan, K. Vijayalakshmi, C. and Ma-nonmani, S. (2010). Genetic analysis to assess the physiological efficiency of parental lines in rice. Electronic Journal of Plant Breeding 1(2): 100-113.
Manonmani, S. and Fazlullah Khan, A.K. (2003). Studies on combining ability and heterosis in rice. Madras Agricultural Journal, 90 (6): 228-231.
Manonmani, S. and Fazlullah Khan, A.K. (2005). Multiseason evaluation of rice hybrids. Plant Archives 5(2): 435-440.
Muthuramu, S., Jebaraj, S. and Gnanasekaran, M. (2010). Combining ability and heterosis for drought tolerance in different locations in rice (Oryza sativa L.). Research Journal of Agricultural Sciences 1(3): 266-270.
Panse, V.G. and P.V. Sukhatme. (1964). Statistical Methods for Agricultural Research Workers, 2nd Ed. ICAR, New Delhi.
Sathya, R. and Jebaraj, S. (2013). Studies on choice of parents and gene action in rice hybrids involving yield and physiological traits under aerobic condition. Plant Gene Trait, 4 (19) : 104-108.
Snedecor, G.W. and W.G. Cochran. (1967). Statistical Methods. VI edition, Iowa state University press, Iowa, USA.
Sprague, G.F. and Tatum, L. A. (1942). General versus specific combining ability in single cross of corn. Journal of American Society of Agronomy 34: 983-992.
Utharasu, S. and C. R. Anandakumar. (2013). Heterosis and combining ability analysis for grain yield and its component traits in aerobic rice (Oryza sativa L.) cultivars. Electronic Journal of Plant Breeding 4(4): 1271- 1279.
Citation Format
How to Cite
Karpagam, V., Jebaraj, S., & Rajeswari, S. (2016). Combining ability and heterosis analysis for drought tolerant traits in rice (Oryza sativa L.). Journal of Applied and Natural Science, 8(2), 674–682. https://doi.org/10.31018/jans.v8i2.857
More Citation Formats:
Research Articles