Effect of P stress on morphology of rice roots and uptake of Fe, Mn, Cu, Zn by four rice genotypes

Solution Culture was conducted to investigate effect of P stress on rice growth and uptake of metal microelements by different rice genotypes. The results indicated that root length, ratio of root to shoot without P treatment of each rice genotype were larger than with P treatment of rice seedlings. In addition, iron oxides plaque formed on the surface of the rice roots in P stress. Fe, Mn, Zn content in rice shoot of P deficiency were lower than normal rice seedling. There was not more effect on Cu content of different rice genotypes and P stress. Genotype-90-68-1 has stronger adapt-ability in condition of P stress.