Physiological responses of two Turkish rice (Oryza sativa L.) varieties to salinity

Publikations-Art

Zeitschriftenbeitrag

Autoren

Tatar Ö, Brueck H, Gevrek MH, Asch F

Erscheinungsjahr

2010

Veröffentlicht in

Turkish Journal of Agriculture and Forestry

Seite (von - bis)

doi:10.3906/tar-0908-311

Effects of salinity (60 mM NaCl) on two Turkish rice varieties (Kıral and Yavuz) were studied in comparison to two international check varieties (IR4630-22-2 tolerant and IR31785-58-1-2-3-3 susceptible) in two hydroponic and one out-door soil-based pot experiments. Partitioning of dry matter, leaf chlorophyll concentration, K⁺ and Na⁺ uptake, and proline accumulation in the leaves were investigated under both control and salt stress conditions. Dry matter accumulation decreased with salt stress in all varieties with the decreases being more pronounced in IR31785 and Kıral. The results show that the varieties tested expressed different adaptation mechanisms under salt stress, however the increase of leaf proline accumulation was a general indicator for responses to salt stress in all cultivars.

Keywords: chlorophyll, K/Na ratio, proline, rice, salinity