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Table 1 Shoot Na + and K + accumulation and K + /Na + ratio of rice cv. Fatmawati and IR64 at 20 d after application of a moderate salt stress (50, 75 and 100 mM NaCl)

From: Image-based phenotyping for non-destructive screening of different salinity tolerance traits in rice

Cultivar Salt stress (mM NaCl) Na+(mM) K+(mM) Shoot K+/Na+
Fatmawati 0 1.6 ± 0.1 a 297.4 ± 6.6 a 196.8 ± 16.6
  50 2.4 ± 0.3 b 343.0 ± 6.6 b 151.0 ± 14.1
  75 3.3 ± 0.2 c 362.0 ± 5.6 bc 111.0 ± 5.4
  100 3.4 ± 0.2 c 365.6 ± 7.2 c 111.8 ± 6.6
IR64 0 2.5 ± 0.1 b 345.1 ± 7.4 b 137.4 ± 5.1
  50 4.8 ± 0.3 d 357.3 ± 10.0 bc 76.7 ± 4.4
  75 5.7 ± 0.4 e 365.4 ± 3.5 c 66.4 ± 4.7
  100 6.1 ± 0.4 e 385.5 ± 7.2 d 65.0 ± 4.3
F-test Cultivar (C) ** ** **
  Salt stress (S) ** ** **
  C x S ** * ns
  1. Values are the means ± SE (n = 7). Values in the same column followed by the same letter are not significantly different according to LSD (0.05) test. **and * = significant at P < 0.01 and 0.05, respectively. ns = not significant.