Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32131
Simulation of Climate Variability for Assessing Impacts on Yield and Genetic Change of Thai Soybean

Authors: Kanita Thanacharoenchanaphas, Orose Rugchati


This study assessed the effects of climate change on Thai soybeans under simulation situations. Our study is focused on temperature variability and effects on growth, yield, and genetic changes in 2 generations of Chiang Mai 60 cultivars. In the experiment, soybeans were exposed to 3 levels of air temperature for 8 h day-1 in an open top chamber for 2 cropping periods. Air temperature levels in each treatment were controlled at 30-33°C (± 2.3) for LT-treatment, 33-36°C ( ± 2.4) for AT-treatment, and 36-40 °C ( ± 3.2) for HT-treatment, respectively. Positive effects of high temperature became obvious at the maturing stage when yield significantly increased in both cropping periods. Results in growth indicated that shoot length at the pre-maturing stage (V3-R3) was more positively affected by high temperature than at the maturing stage. However, the positive effect on growth under high temperature was not found in the 2nd cropping period. Finally, genetic changes were examined in phenotype characteristics by the AFLPs technique. The results showed that the high temperature factor clearly caused genetic change in the soybeans and showed more alteration in the 2nd cropping period.

Keywords: simulation, air temperature, variability, Thai soybean, yield , genetic change

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1568


[1] C. Aydinalp, and M.S. Cresser, "The effects of global Climate Change on agriculture," J. Agric.& Environ. Sci., vol. 3, 2008, pp. 672-676.
[2] E.M. Bainy, S.M., Tosh, M. Correding, and L. wooddrow, and V. Poysa, "Protein subunit composition effects on the thermal denaturation at different stages during the soy protein isolate processing and gelation profiles of soy protein isolates," J Am Oil Chem Soc. Vol. 85, 2008, pp. 581-590.
[3] A. Wahid, S. Gelani, M. Ashraf, M.R. Foolad, " Heat tolaerance in plants: An overview," Environmental and Experimental Botany, vol. 61, 2007, pp. 199-223.
[4] J.D. Cure, and B. Acock, "Crop responses to carbondioxide doubling-a literature survey." Agric. Forest Meteorol,"vol. 21, 2004, pp. 113-125.
[5] R.K. Mall, M. Lal, V.S. Bhatia, L.S. Rathore, and R. Singh, "Mitigating climate change impact on soybean productivity in India:a simulation study," Agric. Forest Meteorol, vol. 121, 2004, pp. 113-125.
[6] D.B. Egli, "Seed biology and the yield of grain crops". CAB Int., Wallingford, UK. 1998.
[7] K. Thanacharoenchanaphas and O. Rugchati," Impacts of Elevated Air Temperature During Growing Season on Yield and Starch Granule Structure of Thai Hom Mali Rice (Oryza sativa L.), cv. Khao Dok Mali 105 , in Proc. the 47th 47th Kasetsart University Annual Conference, Bangkok, Thailand, 17-20 March, 2008
[8] J. Gelang, "Impact of O3 and CO2 on grain growth and yield of wheat," Proceedings of the 6th International Conference on Safety in the Port Environment, 8-10 October, 2001.
[9] I.F. Wardlaw, and L. Moncur, "The response of wheat to high temperature following anthesis. I. The rate and duration of hernel filling," Aust. J. Plant Physiol, vol.22, 1995, pp. 391-397.
[10] C.J. Howarth," Genetic improvements of tolerance to high temperature", In: Ashraf,M., Harris,P.J.C. (Eds.), Abiotic stress:plant resistance through breeding and molecular approaches. Howarth press Inc., New York. 2005.
[11] A. Smertenko, P. Draber, V. Viklicky, Z. Opatrny, " Heat stress affects the organization of microtubules and cell division in Nicotiana tabacum cells. Plant Cell Environ, vol. 20, 1997, pp.1534-1542.
[12] K. Iba, "Acclimative response to temperature stress in higher plants: approaches of gene engineering for temperature tolerance. Annu. Rev. Plant Biol., vol.53, 2002, pp.225-245.