Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Estatal a Distancia
2020
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876458677306654720 |
|---|---|
| author | Junior Pastor Pérez-Molina |
| author_facet | Junior Pastor Pérez-Molina |
| contents | Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching Junior Pastor Pérez-Molina Raquel Castro Lara Ian Portuguez Brenes Valerie Araya Trejos Andrey Quesada Traña Multidisciplinaria (Ciencias Naturales y Exactas) light tomato nitrogen deficiency dry mass partitioning Chlorophyll fluorescence Introduction: Chlorophyll Fluorescence (Fv/Fm) detects damage in photosystem II (PSII) in plants exposed to stress (biotic and/or abiotic). Objective: In this context, Fv/Fm for the diagnosis of the effect of N deficiency and light in tomato plants (Solanum lycopersicum) was evaluated. Methods: We used the software R to analyze data from an experiment consisted of two light treatments (high and low) and two Hoagland nutritive solutions (N deficiency: (-)N; and complete solution: C). Twenty tomato plants within the two light treatments, with two nutrient levels ((-)N and C) were used. For four weeks, weekly measurements for height (H), leaf number (NL), and Fv/Fm were made. On the fourth week, the dry mass partitioning (root: RMR; stem: SMR; and leaves: LMR) and chlorophyll concentration (a, b, a/b, and total) was measured. Results: We found statistically significant differences between treatments for H, NL and Fv/Fm .KW> 14,5, g.l.= 3,76, P<0,01), but no differences for chlorophyll concentration (F<2,2; g.l.=1, 16, P>0,05). In both light conditions it was higher LMR in C treatment, but with lower RMR compared to (-)N. Statistically significant correlations (% Spearman, P<0,05) between Fv/Fm and LMR, RMR, and SMR (-76%, 69%, and 37%, respectively) were found. Conclusion: Overall, we can emphasize that the Fv/Fm is a sensitive variable to the stress caused by nitrogen and light deficiency, whose progress of stress time-course can assess. Finally, Fv/Fm proved to be an indicator of the dry mass partition of stress induced by . deficiency and could be implemented as diagnostic in breeding programs. 2020 artículo científico 1659-4266 https://www.redalyc.org/articulo.oa?id=515663758010 https://www.redalyc.org/journal/5156/515663758010/ https://www.redalyc.org/journal/5156/515663758010/html/ https://www.redalyc.org/journal/5156/515663758010/515663758010.epub https://www.redalyc.org/journal/5156/515663758010/movil https://doi.org/10.22458/urj.v12i1.2629 en http://www.redalyc.org/revista.oa?id=5156 UNED Research Journal / Cuadernos de Investigación UNED application/pdf Universidad Estatal a Distancia UNED Research Journal / Cuadernos de Investigación UNED (Costa Rica) Num.1 Vol.12 |
| format | Artículo científico |
| id | redalyc_515663758010 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad Estatal a Distancia |
| spellingShingle | Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching Junior Pastor Pérez-Molina Multidisciplinaria (Ciencias Naturales y Exactas) light tomato nitrogen deficiency dry mass partitioning Chlorophyll fluorescence Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching Junior Pastor Pérez-Molina Raquel Castro Lara Ian Portuguez Brenes Valerie Araya Trejos Andrey Quesada Traña Multidisciplinaria (Ciencias Naturales y Exactas) light tomato nitrogen deficiency dry mass partitioning Chlorophyll fluorescence Introduction: Chlorophyll Fluorescence (Fv/Fm) detects damage in photosystem II (PSII) in plants exposed to stress (biotic and/or abiotic). Objective: In this context, Fv/Fm for the diagnosis of the effect of N deficiency and light in tomato plants (Solanum lycopersicum) was evaluated. Methods: We used the software R to analyze data from an experiment consisted of two light treatments (high and low) and two Hoagland nutritive solutions (N deficiency: (-)N; and complete solution: C). Twenty tomato plants within the two light treatments, with two nutrient levels ((-)N and C) were used. For four weeks, weekly measurements for height (H), leaf number (NL), and Fv/Fm were made. On the fourth week, the dry mass partitioning (root: RMR; stem: SMR; and leaves: LMR) and chlorophyll concentration (a, b, a/b, and total) was measured. Results: We found statistically significant differences between treatments for H, NL and Fv/Fm .KW> 14,5, g.l.= 3,76, P<0,01), but no differences for chlorophyll concentration (F<2,2; g.l.=1, 16, P>0,05). In both light conditions it was higher LMR in C treatment, but with lower RMR compared to (-)N. Statistically significant correlations (% Spearman, P<0,05) between Fv/Fm and LMR, RMR, and SMR (-76%, 69%, and 37%, respectively) were found. Conclusion: Overall, we can emphasize that the Fv/Fm is a sensitive variable to the stress caused by nitrogen and light deficiency, whose progress of stress time-course can assess. Finally, Fv/Fm proved to be an indicator of the dry mass partition of stress induced by . deficiency and could be implemented as diagnostic in breeding programs. 2020 artículo científico 1659-4266 https://www.redalyc.org/articulo.oa?id=515663758010 https://www.redalyc.org/journal/5156/515663758010/ https://www.redalyc.org/journal/5156/515663758010/html/ https://www.redalyc.org/journal/5156/515663758010/515663758010.epub https://www.redalyc.org/journal/5156/515663758010/movil https://doi.org/10.22458/urj.v12i1.2629 en http://www.redalyc.org/revista.oa?id=5156 UNED Research Journal / Cuadernos de Investigación UNED application/pdf Universidad Estatal a Distancia UNED Research Journal / Cuadernos de Investigación UNED (Costa Rica) Num.1 Vol.12 |
| title | Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) light tomato nitrogen deficiency dry mass partitioning Chlorophyll fluorescence |
| url | https://www.redalyc.org/articulo.oa?id=515663758010 https://www.redalyc.org/journal/5156/515663758010/ https://www.redalyc.org/journal/5156/515663758010/html/ https://www.redalyc.org/journal/5156/515663758010/515663758010.epub https://www.redalyc.org/journal/5156/515663758010/movil https://doi.org/10.22458/urj.v12i1.2629 |