In vitro salinity stress mediates grass pea genotypes' (Lathyrus sativus L.) responses

This study was carried out to determine the tolerance of grass pea genotypes salinity stress at callus and seedling stages under in vitro conditions. The calli seedlings six selected tolerant based on primary screening field were separately exposed treatments (0, 125 mM) vitro. Salinity imposed with NaCl during culture, it significantly affected all traits. Genotype Iran had lowest dry weight therefore more sensitive stress. According indices for seedlings, genotype Greece-III characterized as high-yield relatively high?salt-tolerant genotype. size, RWC, RGR, callogenesis index. Calli fresh weights not by treatments. For weight, highest mean; mean belonged Greece-I. showed that values Greece-III, which high yield stability so reasonable tolerance. Cluster analysis divided into two separate groups. first cluster consisted Iran, Greece-II, genotypes, second Bangladesh, Canada, Greece-I genotypes. potentially separated terms weight. Grass able survive mM salinity. did affect weights, but its effect remarkable (55% less than control). Therefore, reasonably tolerant. present suggests can conditions stages.