Abstract
It has recently been reported that N2 fixation and carbon isotope discrimination (Δ) are negatively correlated. To further test this hypothesis, a greenhouse experiment was conducted to investigate if Δ is correlated with the efficiency of lentil (Lens culinaris cv Laird) in fixing atmospheric nitrogen. Lentil seed was inoculated with one of 10 Rhizobium leguminosarum strains that varied in their effectiveness in symbiotic N2 fixation. Carbon-13 discrimination was positively correlated with N2 fixation (r2=0.60*). Although the amount of N2 fixed ranged from 1.5 mg N to 13.5 mg N shoot−1, the range of Δ values was only 25.8 to 26.6%.. It is unlikely that variability of such small magnitude could be of any practical use in selecting for N2-fixing efficiency.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
