Growth, photosynthetic activity, and potassium and sodium concentration in rice plants under salt stress
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidade Estadual de Maringá
2012
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876463687969013760 |
|---|---|
| author | Soledad García Morales |
| author_facet | Soledad García Morales |
| contents | Growth, photosynthetic activity, and potassium and sodium concentration in rice plants under salt stress Soledad García Morales Libia Iris Trejo-Téllez Fernando Carlos Gómez Merino Camila Caldana David Espinosa-Victoria Braulio Edgar Herrera Cabrera Agrociencias K + salinity Na + ratio Oryza sativa yield of photosystem II Salt stress affects crop growth and productivity. In this study, we determined the growth, yield of photosystem II (PSII), and K + and Na + concentration in root, stem, old leaves, and young leaves of two Mexican varieties of rice, Tres Ríos an d Cotaxtla. In addition, the K + /Na + ratio in stem and root of both varieties was determined. The experiment was conducted in a growth chamber under controlled conditions, under a completely randomized distribution, with a 2 x 2 (Variety x Salinity) factorial arrangement and 12 replications. Plants were grown in a hydroponic solution for 15 days and then some of them were treated with 100 mM NaCl; control plants (without NaCI treatment) were grown in parallel. Salt stress caused 20 and 15% reductions in stem and root length, respectively, in the variety Tres Ríos, while in the variety Cotaxtla no significant differences were observed in these variables compared to the control. Dry matter weight decreased by 24% in the variety Tres Ríos. The quantum yield of PSII decreased by 30% the third day of treatment application, in both varieties. Na + concentration was significantly (p ≤ 0.05) higher in NaCI-treated plants. In the variety Tres Ríos, the yield of PSII was completely eradicated six days after treatment implementation, while the K+ concentration in stem and older leaves also decreased and the lowest K + / Na + ratio in stem was recorded, which could indicate that it is more susceptible to salinity than the variety Cotaxtla. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303026602012 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.3 Vol.34 |
| format | Artículo científico |
| id | redalyc_303026602012 |
| institution | Redalyc |
| language | en |
| publishDate | 2012 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Growth, photosynthetic activity, and potassium and sodium concentration in rice plants under salt stress Soledad García Morales Agrociencias K + salinity Na + ratio Oryza sativa yield of photosystem II Growth, photosynthetic activity, and potassium and sodium concentration in rice plants under salt stress Soledad García Morales Libia Iris Trejo-Téllez Fernando Carlos Gómez Merino Camila Caldana David Espinosa-Victoria Braulio Edgar Herrera Cabrera Agrociencias K + salinity Na + ratio Oryza sativa yield of photosystem II Salt stress affects crop growth and productivity. In this study, we determined the growth, yield of photosystem II (PSII), and K + and Na + concentration in root, stem, old leaves, and young leaves of two Mexican varieties of rice, Tres Ríos an d Cotaxtla. In addition, the K + /Na + ratio in stem and root of both varieties was determined. The experiment was conducted in a growth chamber under controlled conditions, under a completely randomized distribution, with a 2 x 2 (Variety x Salinity) factorial arrangement and 12 replications. Plants were grown in a hydroponic solution for 15 days and then some of them were treated with 100 mM NaCl; control plants (without NaCI treatment) were grown in parallel. Salt stress caused 20 and 15% reductions in stem and root length, respectively, in the variety Tres Ríos, while in the variety Cotaxtla no significant differences were observed in these variables compared to the control. Dry matter weight decreased by 24% in the variety Tres Ríos. The quantum yield of PSII decreased by 30% the third day of treatment application, in both varieties. Na + concentration was significantly (p ≤ 0.05) higher in NaCI-treated plants. In the variety Tres Ríos, the yield of PSII was completely eradicated six days after treatment implementation, while the K+ concentration in stem and older leaves also decreased and the lowest K + / Na + ratio in stem was recorded, which could indicate that it is more susceptible to salinity than the variety Cotaxtla. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303026602012 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.3 Vol.34 |
| title | Growth, photosynthetic activity, and potassium and sodium concentration in rice plants under salt stress |
| topic | Agrociencias K + salinity Na + ratio Oryza sativa yield of photosystem II |
| url | https://www.redalyc.org/articulo.oa?id=303026602012 |