Abstract
Given a uniform N source, the δ15N of barley shoots provided a genotypic range within treatments and a separation between control and salt-stress treatments as great as did δ13C*. Plant δ15N has been represented in the literature as a bioassay of external source δ15N and used to infer soil N sources, thus precluding consideration of the plant as a major cause in determining its own 815N. We believe this to be the first report of plant δ15N as a genetic trait. No mechanistic model is needed for use of δ15N as a trait in controlled studies; however, a qualitative model is suggested for further testing.
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Abbreviations
- δ15N (or β13C):
-
the difference between: (1) the ratio of heavy to light isotopes of the element in a sample and (2) that of its reference standard
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Handley, L.L., Robinson, D., Forster, B.P. et al. Shoot δ15N correlates with genotype and salt stress in barley. Planta 201, 100–102 (1997). https://doi.org/10.1007/BF01258686
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DOI: https://doi.org/10.1007/BF01258686