Notice of RetractionCharacteristics of Nitrogen Isotopic Composition of Different Wheat Chromosome Ploidy

Plant nitrogen stable isotopic composition (δ15N) has been used in plant eco-physiology, and which can used to research plant nitrogen use efficiency and its relation to the surrounding environment. In the present study, we determined δ15N changes during evolution using three wheat evolution genotypes with different ploidy chromosome sets (T. monococcum: 2n=2x=14, AA; T. dicoccum: 2n=4x=28, AABB and T.aestivum : 2n=6x=42, AABBDD) under solution culture, and the results showed that: either wheat leaf and root or whole wheat plant, nitrogen isotopic composition was decreased linearity from T. monococcum (2x) to T. dicoccum (4x), to T. aestivum (6x), but the nitrogen content increased during wheat evolution. The reasons may be related to the ability of nitrogen uptake and nitrogen use efficiency. The idea proposed for us to research nitrogen isotope composition, nitrogen use efficiency and select of high nitrogen use efficiency of wheat genotypes.

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