Root Differentiation of Agricultural Plant Cultivars and Proveniences Using FTIR Spectroscopy

2018 | journal article; research paper. A publication with affiliation to the University of Göttingen.

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​Root Differentiation of Agricultural Plant Cultivars and Proveniences Using FTIR Spectroscopy​
Legner, N. ; Meinen, C.   & Rauber, R.​ (2018) 
Frontiers in Plant Science9 art. 748​.​ DOI: 

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Legner, Nicole ; Meinen, Catharina ; Rauber, Rolf
The differentiation of roots of agricultural species is desired for a deeper understanding of the belowground root interaction which helps to understand the complex interaction in intercropping and crop-weed systems. The roots can be reliably differentiated via Fourier transform infrared spectroscopy with attenuated total reflection (FTIR-ATR). In two replicated greenhouse experiments, six pea cultivars, five oat cultivars as well as seven maize cultivars and five barnyard grass proveniences (n = 10 plants/cultivar or provenience) were grown under controlled conditions. One root of each plant was harvested and five different root segments of each root were separated, dried and measured with FTIR-ATR spectroscopy. The results showed that, firstly, the root spectra of single pea and single oat cultivars as well as single maize and single barnyard grass cultivars/proveniences separated species-specific in cluster analyses. In the majority of cases the species separation was correct, but in a few cases, the spectra of the root tips had to be omitted to ensure the precise separation between the species. Therefore, species differentiation is possible regardless of the cultivar or provenience. Consequently, all tested cultivars of pea and oat spectra were analyzed together and separated within a cluster analysis according to their affiliated species. The same result was found in a cluster analysis with maize and barnyard grass spectra. Secondly, a cluster analysis with all species (pea, oat, maize and barnyard grass) was performed. The species split up species-specific and formed a dicotyledonous pea cluster and a monocotyledonous cluster subdivided in oat, maize and barnyard grass subclusters. Thirdly, cultivar or provenience differentiations within one species were possible in one of the two replicated experiments. But these separations were less resilient.
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Frontiers Media S.A.
Frontiers in Plant Science 
Department für Nutzpflanzenwissenschaften ; Fakultät für Agrarwissenschaften ; Abteilung Pflanzenbau 



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