Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2008.90.94Zea mays L.) Seedlings]]>PourabdalL. HeidaryR. FarboodniaT. 1200871Flooding stress has many important morphological
and biochemical effects on plants. Because of the importance of determination
the effects of flooding on the plants and understanding of the tolerance
mechanisms, in this research Four-days-old maize (Zea mays L.)
seedlings (cv. single cross 704) were exposed to 4, 7 and 10 days flooding
stress. At the end of each treatment the roots and shoots of the seedlings
were harvested separately. To show the some anatomical, morphological
and biochemical changings of the flooding on plants, cross sections of
the roots and shoots were studied with light microscope. There was no
clear changing in the tissue structures` of leaves and stems of different
treatments in comparison with controls, but in the roots of plants aerenchyma
had been developed under stress condition especially in the mesocotyl
region. The roots of flooded plants grow towards the soil surface despite
positive geotropism of control roots. The chlorophyll a and b content
and the ratio of chlorophylls a/b have been decreased but the amounts
of soluble sugars have been increased in both the roots and shoots of
seedlings. We conclude that flooding influences plants growth and life
and development of the aerenchyma and vegetative roots help to plants
to adapt itself to stress condition. So it is very important to know which
plants are sensitive or tolerant and what are the tolerance mechanisms
in the different plants to succeed in agricultural efforts.]]>Ashraf, M.,2003Panicum antidotale Retz.) under salinity or waterlogging.]]>1656975Barta, A.,1987Medicago sativa L. and Lotus corniculatus L. under anoxia.]]>10151156Barta, A.,198888889892Castonguay, Y., P. Nadeau and R. Simard,199316695702Fales, F.W.,1951193113124Heim, D.C., G.G. Kennedy and J.W. Vanduyn,19908312291235Hsu, Y.M., M.J. Tseng and C.H. Lin,199940193198Hsu, F.H., J.B. Lin and S.R. Chang,200041267273Igamberdiev, A.U., K. Baron, N. Little, M. Stoimenova and R.D. Hill,200596557564Jackson, M.B. and M.C. Drew,19841984pp: 47-128pp: 47-128Jackson, M.B.,198536145174Laan, P., M. Tosserams, C.W.P.M. Blom and B.W. Veen,1990Rumex species and its significance for respiration under hypoxic conditions.]]>1223946Liao, C.T. and C.H. Lin,200125148157Lin, J.B. and M.S. Yeh,1996Glycine max and G. tomentella.]]>1731727Mauchamp, A. and M. Methy,2004Phragmites australis. ]]>51227235Mohanty, B., P.M. Wilson and T. Rees,1993347582Ram, P.C., B.B. Singh, A.K. Singh, P. Ram, P.N. Sing, H.P. Singh, J. Boamfa, F. Harren, E. Santosa, M.B. Jackson, T.L. Setter, J. Reuss, L.J. Wade, V.P. Singh and R.K. Singh,200276131152Raskin, I. and H. Kende,1985228327329Su, P.H., T.H. Wu and C.H. Lin,1998luffa and bitter melon is not referential to flooding tolerance.]]>39175179Visser, E.J.W., C.W.P.M. Blom and L.A.C.J. Voesenek,1996Rumex: Morphology and development in an ecological perspective.]]>451728Visser, E.J.W. and L.A.C.J. Voesenek,2004254197214Zaidi, P., S. Rafique and N. Singh,2003Zea mays genotypes to excess soil moisture stress: Morpho-Physiological effects and basis of tolerance.]]>19383399Zhang, J. and M.B. Kirkham,1996132361373