Effects of Phosphorus Deficiency Stress on Protective Enzyme Activities， MDA Content and Chromosome of Wheat Substitution Lines Seedling Roots

doi:10.3969/j.issn.1000-7091.2013.02.017

Abstract

Abstract: The effects of phosphorus deficiency stress on enzyme activity in wheat was studied by determining antioxidant enzymes SOD,POD activities and MDA content and locating thegene controlling antioxidant enzymes SOD,POD activities and MDA content at the roots of the seedling stage using wheat substitution lines between Chi-nese Spring(CS)and Synthetic 6x. The results showed that SOD and POD activities increased,MDA content reduced under phosphorus deficiency stress. This explains that the increased of antioxidant enzyme activity might reduce MDA content and lower membrane lipid peroxidation level,to improve their resistance. Thegenes promoting SOD activity might be located on 3A,4A,5A and 7A chromosome of Synthetic 6x;and thegenes promoting POD activity might be located on 5A,1D and 2D chromosome,while thegenes inhibiting content might be located on 5A,2D,5D and 7D chromosome of Synthetic 6x.

Key words: Substitution lines, Roots, P-deficiency, Protective enzymes, Chromosome effect

CLC Number:

MI Shao-yan, JING Jiao-jiao, BAI Zhi-ying, LI Cun-dong. Effects of Phosphorus Deficiency Stress on Protective Enzyme Activities， MDA Content and Chromosome of Wheat Substitution Lines Seedling Roots[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(2): 91-95. doi: 10.3969/j.issn.1000-7091.2013.02.017.

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