stress on different varieties of lettuce seedlings in MDA, proline and soluble
sugar content were studied. The results were as follows : With the stress
temperature, varieties of leaf lettuce seedlings in the MDA, proline and
soluble sugar content gradually increased; Different varieties had the most
significant difference in 38/33℃(d/n). The increase of heat-resistant varieties on proline and soluble sugar
content was quick and high, while its increase in MDA content was slow and
Cite this paper
Han, Y.Y., Fan, S.X., Zhang, Q. and Wang, Y. N.(2013) Effect of heat stress on the MDA, proline and soluble sugar content in leaf lettuce seedlings. Agricultural Sciences, 4, 112-115. doi: 10.4236/as.2013.45B021.
 Kuo, C.G. and Tsay, J.S. (1981) Physiological responses of Chinese cabbage under high temperature. In: Tale kar, N S. And Griggs, T.D. eds., proc. Lst International Symposium on Chinese Cabbage, AVRDC, Shanhua, Taiwan. 217-224.
 Opena, R.T. and Lo, S.H. (1979) Genetics of heat tolerance in heading Chinese cabbage. Hort. Sci.,14,33-34.
 Opena, R.T. and Lo, S.H. (1981) Breeding for heat tolerance in heading Chinese cabbage.Taiwan Province: Shanhua Press, 489.
 Heath, R.L. and Packer, L. (1968) Photoperoxidation in isolated chloroplasts L Kinetics and stoichiometry of fatty acid peroxidation. Archives of Biochemtry Biophysics, 125, 189-198. doi:10.1016/0003-9861(68)90654-1
 Shah, K., Kumar, R.G.., Verma, S. et a1. (2001) Effect of cadmium on lipid peroxidation, superoxide anion generation and activities of antioxidant enzymes in growing rice seedlings. Plant Science, 161, 1135-1144.
 Zhang, D.Z., Wang, P.H. and Zhao, H.X. (1990) Determination of the content of free proline in wheat leaves. Plant Physiol Commun, 16, 62-65.
 Li, H.S. (2000) Plant physiology and biochemistry of principles and techniques. Higher Education Press, Beijing, 195.
 Santarius, K.A. (1980) Membrane lipids in heat injury of spinach chloroplasts. Physiologia Plantarum, 49, 1-6. doi:10.1111/j.1399-3054.1980.tb08638.x
 Burke, J.J. (2001) Identification of genetic diversity and mutations in higher plant acquired thermotolerance. Physiologia Plantarum, 112, 167-170.
 Inze, D. and Montagu, M.V. (1995) Oxidative stress in plant. Current Opinion in Biotechnology, 6, 153-158.
 Vranova, E., Inze, D. and Breusegem, F.Van. (2002) Signals transduction during oxidative stress. Experimental Botany, 53, 1227-1236. doi:10.1093/jexbot/53.372.1227`
 Li, M., Wang, W.H., Wang, R. and Liu, R.J. (2004) Influences of high temperature stress on activity of cell defense enzymes and membrane permeability in leaves of spinach. Acta Hort. Sin, 31, 99-100.
 Yin, X.G., Luo, Q.X. and WANG, W.Q. (2001) Studies oil methodlogy for identification of heat tolerance of tomato. Southwest China Journal of Agricultural Science, 14, 62-65.
 Jia, K.Z. and Chen, G.L. (2005) Torrance of different eggplant varieties at seedling stage to high temperature stress. Chinese Journal of Applied Ecolgy, 24, 398-401.
 Tu, S.S. and Qin, T.C. ( 2004) Effect of heat stress on the contents of free proline, soluble sugar and malondiadehyde in Dioscorea zingibercnsis leaves. HuBei Agricultural Sciences, 4, 98-100.