| Autor: |
Shree, M., Vasantha, K., Rani, J., Devendra, R., Prasad, T., Shrivastava, M., Sashidhar, V. |
| Zdroj: |
Indian Journal of Plant Physiology; 20240101, Issue: Preprints p1-7, 7p |
| Abstrakt: |
Differences in 22Na uptake was determined in contrasting rice cultivars differing in salt tolerance. Selection for contrasting cultivars with significant differences in salt tolerance was based on a preliminary screening and included varietal differences in Na+exclusion capacity, K/Na selectivity based on K+, Na+content of roots and shoots and a few other physiological traits. Almost 80 percent of the 22Na uptake, into roots occurred during the first 1 h after salt stress imposition in both varieties. However 22Na uptake was significantly higher in the salt susceptible KMP-175 as compared to Pokkali—in the first hour after salt stress imposition. After 6 and 24 h, the 22Na uptake differences tapered off in the roots while these differences remained up to 6 h in the shoot. Overall the results broadly suggested that plants of the salt tolerant Pokkaliwere able to regulate Na+transport into roots, more effectively than the salt susceptible variety immediately upon salt stress imposition but only for short periods. |
| Databáze: |
Supplemental Index |
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