Resumen

ARGENTEL, Leandris; LOPEZ, R. C; GONZALEZ, L. M  y  LOPEZ AGUILAR, R. D. Water regime and osmotic adjustment in cuban wheat varieties (Triticum aestivum y T. durum) crops under saline conditions . cultrop [online]. 2013, vol.34, n.1, pp. 18-23. ISSN 0258-5936.

The behavior of water and osmotic potential and osmotic adjustment in twelve cuban wheat varieties of Triticum aestivum and Triticum durum species crops under salinity conditions were evaluated. The plants were settled down in a hothouses under hidropony conditions at a salinity level of 8 dS.m-1, a control treatment with an electric conductivity of 0,36 dS.m-1 was mounted. The evaluations were carried out at 25 days after germination. As results a significant decrease of water potential values were obtained in most varieties in all measured organs and a significant decrease of its values was observed from roots to leaves in order to assureb water gradient. The varieties that didn’t diminish significantly their water potential showed similar behavior in the three evaluated organs, although the potential gradient was stayed. The osmotic potential diminished significantly in all varieties and its values were minor to -0,6 MPa. All varieties carried out the osmotic adjustment, being the most significant value AO=0,3 MPa in INIFATRM-36, INIFATRM-32, INIFATRM-37 varieties. A considerable variability in stress salinity response between varieties and species for the three evaluated variables was observed.

Palabras clave : wheat; plant water potencial.

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