Graphic Analysis of Salinity Tolerance Traits of Rice (Oryza Sativa L.) Using Biplot Method
Salinity stress is one of the important abiotic stresses affecting rice germination and reduces establishment of seedlings in the field. Six varieties of rice were included in a full diallel mating design and together with their progenies were evaluated for salinity tolerance. General combining ability (GCA) effect was significant for germination percentage reduction (GP) and radicle length reduction (RL); whereas specific combining ability (SCA) were significant for all of traits contain GP, RL, germination rate reduction (GR) and coleoptile length reduction (CL). The negative value of heterosis, due to inverse relation of reduction of traits and salinity tolerance, indicated ideal heterosis. The highest value of negative heterosis for GP, GR, RL and CL were displayed in Shahpasand × Sepidrod, Hassani × Sepidrod, Shahpasand × IRFAON-215 and Sepidrod × IRFAON-215, respectively. The parents with negative GCA are superior for salinity tolerance traits. The Genotype, Genotype-by-Environment (GGE) biplot analysis showed that Sepidrod contributed resistance to GP, GR and IRFAON-215 was the best parent for RL and CL. Respondent this view, Sepidrod and IRFAON-215 can be used either as best parents for selection programs due to their GCA effects, or as a superior parent hybrid programs on their SCA effects.
Keywordscombining ability diallel heritability GGE biplot salinity tolerance
radicle length reduction
coleoptile length reduction
germination percentage reduction
germination rate reduction
Unable to display preview. Download preview PDF.
- Kozlowski, T.T. 1997. Responses of woody plants to flooding and salinity. Tree Physiology Online Monograph No. 1: 1–29. https://doi.org/www.heronpublishing.com/tp/monograph/kozlowski.pdf
- Krishnamoorthy, G. 2005. A study of heterotic relationships in sorghum. PhD thesis, A&M University, Texas, USA.Google Scholar
- Pieper, A. 1952. Das Saatgut (The Seed). V.P. Darey Berlin, Hamburg, Germany. (in German)Google Scholar
- Puard, M., Clement, G., Mouret, J.C., Roux-Cuvelier, M. 1999. Strategies for rice salinity tolerance in Mediterranean France. Cahiers Options Mediterranéennes 40:83–96.Google Scholar
- SAS 2005. SAS/STAT User’s Guide Version 9.1. SAS Institute, Cary, NC, USA.Google Scholar
- Singh, S., Singh, A.K., Singh, H.P., Singh, R.S. 2008. Genetic analysis for seed germination, callus induction and survival of rice under salt at in vitro conditions. Oryza 45:512–520.Google Scholar
- Szabolcs, I. 1994. Soils and salinization. In: M. Pessarakli (ed.), Handbook of Plant and Crop Stress. Marcel Dekker, New York, USA, pp. 3–11.Google Scholar
- Yan, W., Kang, M. 2003. GGE Biplot Analysis: A Graphical Tool for Breeders, Geneticists, and Agronomists. CRC Press, Boca Raton, FL, USA, 288 pp.Google Scholar