Plant and Soil

, Volume 88, Issue 2, pp 237–243 | Cite as

Salt tolerance of rice cultivars

  • N. K. Fageria
Article

Summary

The dry matter production and the concentration of nutrients in rice (Oryza sativa L.) cultivars from soil adjusted to different levels of salinity were evaluated under a greenhouse conditions. Soil salinity levels were produced by applying 0.34 mol l−1 solution of NaCl which resulted in the following levels, control (0.29), 5, 10 and 15 dS m−1 conductivity of saturation extract. The effect of salinity on dry matter production varied from cultivar to cultivar.

The concentrations of P and K in the tops of rice cultivars decreased with increasing soil salinity. But the concentrations of Na, Zn, Cu and Mn increased.

Significant varietal differences were found in relation to salinity tolerance. Based on dry matter yield reduction, rice cultivars were classified as tolerant, moderately tolerant, moderately susceptible or susceptible.

Key words

Dry matter production Electrical conductivity Nutrient concentration Oryza sativaSalinity threshhold Screening of rice cultivars 

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Copyright information

© Martinus Nijhoff Publishers 1985

Authors and Affiliations

  • N. K. Fageria
    • 1
  1. 1.National Rice and Bean Research Center of EMBRAPAGoiânia GoiásBrazil

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