Effect of exogenous abscisic acid on freezing temperature resistance of wheat (Triticum aestivum L.) plants

Petcu, E.; Ittu, G.; Mustatea, P.

Probleme de Genetica Teoretica si Aplicata 28(2): 77-85


Accession: 003107407

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Five winter wheat cultivars differing in resistance to low temperatures (very resistant Odesskaya 51, resistant Fundulea 4 and Lovrin 34, moderately resistant Iulia and susceptible Libellula) and the spring isogenic lines Fundulea 4 Vrn and Lovrin 34 Vrn were used to compare the effect on freezing tolerance of treatment with exogenous abscisic acid (ABA) as against natural and artificial hardening. Data obtained from all 3 treatments on free proline content, cell membrane stability and low temperature resistance were highly correlated. The highly significant correlation between free proline content and the LD50 value in all the treatments suggested that ABA treatment could be used as a rapid method of identifying genotypes with cold resistance.