Wheat Ontology 
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Curators Rosemary Shrestha, CIMMYT Julian Pietragalla, IBP GCP
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Contributors CIMMYT - Carlos Guzmán, Hector González, Enrique Autrique, Javier Pena, Pawan Singh, Matthew Reynolds, Tom Payne, Velu Govindan INRAE - Cyril Pommier JIC - Luzie Winge Cornell Univ. - David Waring |
Crop lead center
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Collaborators
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Navigation
=Term, 
=Trait, 
=Method, and 
=Scale
Variables
Concept details
| Key | Value |
|---|---|
| method_id | CO_321:0000383 |
| method_name | CID determination |
| ontology_id | CO_321 |
| ontology_name | Wheat |
| method_class | Measurement |
| method_description | Proceed following the protocol for sampling of grains or leaves for CID in Chapter 6 in Pask et al., 2012. Mass spectrometers generate differential values of stable carbon isotope composition (?13C), expressed negative values in parts per thousand (?) (Farquhar et al., 1989): ?13C (?) = [(Rsample/Rstandard)?1] × 1000. Where: the ratio of heavy to light isotope (R = 13C/12C) for the sample is in comparison to Peedee Belemnite (PDB) carbonate (limestone) standard. Following Farquhar et al. (1989) ? rather than using carbon isotope composition values (?13C), positive values for CID (?13C) can be calculated for easier statistical analysis as: ?13C = [(?a-?p)]/[1 + (?p/1000)] |
| method_reference | Pask et al., 2012 (Ch. 6), Reynolds et al., 2001 (Ch. 5) |
| language | EN |
| created_at | 2023-09-01-12:59:34 |