Evalution of sunflower varieties for yield production under drought stress conditions using statistical tolerance indices

Subject Areas : Agroecology Journal

Ebrahim Abbasi Seyahjani ¹ ( Graduated M. Sc. of Agronomy and Member of Young Researcher’s Club, Islamic Azad University, Tabriz Branch, Tabriz, Iran. )
farhad Farhvash ² ( Assistant Prof., Department of Agronomy and Plant Breeding, Faculty of Agriculture, Islamic Azad University, Tabriz Branch, Iran. )
mohammad Khorshidi Benam ³ ( Assistant Prof., Azarbayejan-e-Sharqi Agricultrual and Natural Resources Research Center, Tabriz, Iran. )
aytak sadegi ⁴ ( M. Sc. in Agronomy, Azarbayejan-e-Sharqi Agricultrual and Natural Resources Research Center, Tabriz, Iran. )

Received: 2009-08-03 Accepted : 2009-12-25 Published : 2010-04-21

Keywords: drought, yield, Sunflower, cultivar, Tolerance indices,

Abstract :

Effects of drought stress were examined in three sunflower cultivars for the yield production. A split plot experiment based on a randomized complete block desighn with three replications was conducted in the agriculturl Research Station of Islamic Azad University, Tabriz Branch. Five drought tolerance indices including MP (Mean Productivity), GMP (Geometric Mean Productivity), TOL (Stress Tolerance), STI (Stress Tolerance Index ) and SSI (Stress Susceptibility) were estimated for each variety. The results showed that significant differences between three cultivars for the yield. The variety named Armavirsky produced the highest yield (5486 kg/ha) in non-stess condition as compared to other varieties but variety Euroflour produced the highest yield in stress condition (2672 kg/ha) in comparsion with the two others. The highest amount of STI was estimeted for Armavirsky with a value of 0.57. Considering the GMP index, variety Armavirsky was also a high tolerant cultivar (5486 kg/ha). However, according to SSI and TOL indices, Euroflour stand at the top as a tolerant cultivar, whereas variety Armavirsky still showed high value of MP. Correlation analysis between Ys and Yp with other stress indices revealed no relation between Ys and other tolerance indices but Yp correlated with STI, TOL, GMP and MP. It is concluded that variety Euroflour can be recommended in stress and variety Armavirsky in non-stress conditions. Indeed, indices such as GMP, STI and MP are reliable for selecting stable genotypes with high potential productivity.

References:

1. Angadi, S. V. and Hentz, M. H. 2002. Water relations of standard height and dwarf in sunflower cultivars. Crop Science 42: 152-159.


2. Baldini, M., Ceccono, F., Vanozzi, G. P. and Benvenuti, A. 1991. Effect of drought on yield reduction in different sunflower hybrids. Helia 14: 71-76.


3. Bidinger. F. R., Mahalakshmi, V. and Rao, G. D. P. 1987. Assessment of drought resistance in pearl millet, Pennisetum americanum (L.). II. Estimation of genotypes response to stress. Australia Journal of Agricultural Research 38: 479-59.


4. Ehdai, B. 1993. Selection for drought stress. Key Papers of First Agronomy and Plant Breeding Congress, Tehran, University Agriculture Faculty, Pp. 43-62. [In Persian with English Abstract].


5. Fereres, E., Gimenez, C., Brengena, J., Fernandez, J. and Dominguez, J. 1983. Genetic variability of sunflower cultivars in response to drought. Helia 6: 17-21.


6. Fernandez, G. C. J. 1992. Efferctive selection criteria for assessing plant stress tolerance. Proceedings of the symposium, Taiwan, 13-16 Aug. 1992. AVRDC. PP. 257-270.


7. Fisher, F. A. and Maurer, R. 1978. Drought resistance in spring wheat cultivars. I. Grain yied responses. Australian Journal of Agricultural Research 29: 897-917.


8. Ghafari, M. 2008. Evaluation and selection of sunflower inbred lines under normal and drought stress conditions. Plant and seed Journal 23: 633-649.


9. Henderson, S. A., kamboonruang, V. and Cooper, M. 1995. Evaluation of a glasshouse screening method to select for drought resistance in rain- fed lowland rice. Proceedings of the International Rice Ressearch Institute, IRRI. Los Banos, Philippines, P. 120.


10. Jafarzadeh-Kenarsari, M. and Postini, K. 1998. Investigating the effect of drought stress at different growth stages on some morphological characteristics and yield components of sunflower (cv. Record). Iranian Journal of Agricultural Science 29(2): 353-362. [In Persian with English Abstract].


11. Kazemitabar, C. K., Betorak, C., Fathi, K. and Rezaei, M. 2007. Identification of tolerance to drought stress in sunflower with application of tolerance indices, 2-3 dimensional diagrams of distribution. Iranian Agricultural Sciences Magazine 3: 357-366. [In Persian with English Abstract].


12. Khorshidi, M. B., Abdi, M., Iranipur, S. and Akbari, R. 2008. Effect of end season water strees on yield of nine rice cultivars and promising lines based on drought evaluation indices. Journal of NewAgricultural Sciences, Islamic Azad University Miyaneh Branch 11:17-29. [In Persian with English Abstract].


13. Mozafari, K., Arshi, Y. and Zinali, H. 1996. Evaluation of the effect of drought stress on some morphological traits and yield components of sunflower. Nahal and Bazr Magazine (12): 24-33. [In Persian with English Abstract].


14. Naderi, A., Majidi, A., Hashemi, H. A., Rezaei, D. A. and Nourmohammadi, G. 2000. Analysis of efficiency of indices evaluator of crops tolerance to environmental stress and introduce a new index. Nahal and Bazr Magazine 15 (4): 70-78. [In Persian with English Abstract].


15. Normand-Moaeyed, F., Rostami, M. A. and GHanadha, M. R. 2001. Evaluation of drought resistance indices in breed wheat (Triticum aestivum L.). Iranian Journal of Agricultural Science 32 (4): 795-806. [In Persian with English Abstract].


16. Razi, H. and Assad, M. T. 1998. Evaluation variability of important agronomic traits and drought tolerance criteria in sunflower cultivars. Journal of Agricultural Science and Natural Resources 2: 30-43.


17. Rezaeizad, A. 2007. Responses of some sunflower genotypes to drought stress using different stress tolerance indices. Nahal and Bazr Magazine 23 (1): 43-58. [In Persian with English Abstract].


18. Rosielle, H. M. and Hamblin, J. 1981. Teoritical aspect of selection for yield in stress and non- stress environments. Crop Science 21: 943- 945.