اثر نانوذرات نقره بر روابط آلومتریک دو رقم گندم تحت تنش شوری در مراحل اولیه رشد

In order to study the effect of nanosilver particles on allometric relations of two wheat cultivar (moderately tolerant and susceptible), Khazar and Chamran under salt stress (0, 50, 100, 150, 200 and 250 mM NaCl), an factorial experiment (2×2×6) based on completely randomized was conducted at Sari Agricultural Sciences and Natural Resources University in 2014. The measured traits were included germination percentage (GP), allometric coefficient (AC), vigor index (VI), root length (RL), shoot length (SL) and seedling length (SL). Results showed that interaction effects between three factors were significant on AC, SL and GP. For VI,
cultivar×nano interaction and for SL, cultivar×salt stress and salt stress×nanopriming interactions were
significant. Pretreatment of nanosilver particles had positive effect on seedling vigor index and shoot length in susceptible cultivar (Chamran) and also lead to an increase in allometric coefficient until salinity 150 mM NaCl. In 200 mM NaCl, nanopriming increased GP (from about 87 to 97%) in Khazar while declined (from about 88 to 80%) in Chamran cultivar and didn’t significant effect in other levels. In conclusion, two susceptible and moderately tolerant wheat cultivars showed different response to nanosilver priming under salinity levels. However, it seems that more research is needed in the future.