Effect of salinity on germination of five Tunisian lentil (Lens culinaris L.) genotypes
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Ali Ouji, Safia El-Bok, Mohieddine Mouelhi, Ben younes Mongi, Mohamed Kharrat. (29/7/2015). Effect of salinity on germination of five Tunisian lentil (Lens culinaris L. ) genotypes. European Scientific Journal, 11 (21), pp. 63-75.
Abstract
Salinity is one of the major stresses especially in arid and semi-arid
regions, which severely limites crop production. It is a significant problem
affecting agriculture worldwide and is predicted to become a larger problem
in the coming decades. This study was conducted to assess the effect of
different salinity level (0, 50, 150, 250 mMol of NaCl) on lentil seed
germination efficiency (germination, seedling shoot length, seedling root
length, seedling fresh shoot weight and seedling fresh root weight). Five
Tunisian genotypes of lentil (Lens culinaris M) namely: Kef, Siliana, Nefza,
Ncir, and Local oueslatia were investigated. Results showed that there were
significant differences among the different NaCl solution for all evaluated
traits. Indeed, the experiment showed that the concentrations of salt have a
negative impact on the germination and growth of lentil. As a result when the
concentration of salt increases, the germination, length of root and shoot and
fresh weight of root and shoot decreases. At 250 mM salt stress level, seed
germination percentage of all genotypes was notably reduced compared with
non-stress condition (0.0 mMol). Moreover, the seeds were not germinated by the 250 mM salinity level for kef genotype. From the results of this
present investigation, it can be concluded that seeds of Kef and Ncir
genotypes were susceptible to higher concentrations of salt solutions in
germination stage. However, Siliana, Local oueslatia and Nefza genotypes
can be considered as tolerant to salt stress compared to the other ones. These
genotypes could be used for further analysis and for hybridization in the
breeding program for enhancing lentil cultivation in newly reclaimed soils.