Germination and vigor of soybean genotypes seeds under saline stress

ABSTRACT Soybean stands out among the crops with greatest application of transgenics, mainly for tolerance to herbicides, pests, and diseases; however, studies on salt stress in genetically modified plants are scarce. This study aimed evaluate both traditional soybean genotypes saline during germination seedling phases. Seeds 13 were selected (five (BRS Carnaúba, BRS Pérola, Tracajá, Sambaíba, FTR-4389) eight transgenic Sambaíba RR, BRS-333-RR, BRS-9820- PAS-13565-74-RR, PAS-11711-007-RR, BRS-918-IPRO, AS-3810-IPRO, M-8210-IPRO)), subjected four osmotic potentials (0.0, 0.1, -0.2, -0.3 MPa). The seed quality was evaluated using following variables: percentage, speed index, shoot length, root dry mass accumulation, salinity index. All variables found be affected by stress. However, conventional genotypes, RR group PAS-11711-007-RR tolerant salinity, whereas FTR-4389 (conventional) (RR) less stress, all IPRO moderately