Carbon Isotope Ratio Fractionation among Plant Tissues of Soybean. Issue 1 (1st September 2018)

• Record Type: Journal Article
• Authors: Kaler, Avjinder S.; Bazzer, Sumandeep K.; Sanz‐Saez, Alvaro; Ray, Jeffery D.; Fritschi, Felix B.; Purcell, Larry C.
• Is Part Of: Plant phenome journal. Volume 1:Issue 1(2018)
• Page Start: 1
• Page End: 6
• Publication Date: 2018-09-01
• Subjects: Phenotype -- Periodicals; Plant genetics -- Periodicals; Periodicals; 581.35
• DOI: 10.2135/tppj2018.04.0002
• Languages: English
• ISSNs: 2578-2703

Abstract

Abstract : Carbon isotope ratio (δ 13 C) has been used as a proxy for water use efficiency (WUE) in several crops. We compared δ 13 C of soybean [ Glycine max (L.) Merr.] tissues sampled at bloom with δ 13 C of mature seed (MS). Twenty Maturity Group IV accessions with contrasting δ 13 C values were evaluated in three environments. Genotype and environment effects on δ 13 C were significant for the uppermost mature trifoliolate leaf, center leaflets from main stems, whole shoot, and MS, but there were no significant genotype by environment interactions, indicating that genotype rankings were similar among environments. Repeatability of δ 13 C among tissues ranged from 0.79 to 0.94, and MS δ 13 C values were significantly correlated with δ 13 C from other tissues ( r ≥ 0.69). For genotypes of similar maturity, MS δ 13 C may be used as a selection tool for WUE, simplifying the use of δ 13 C for high‐throughput phenotyping.