Sodium accumulation trend in the different quality seed, cultivars, and yield potential of peanut under salinity stress

Abstract

Seed quality is a crucial component of crop productivity. Therefore, it is essential to ascertain the seed harvested source for succeeding sowing to sustain productivity. Peanut (Arachis hypogaea L.) production in salinity-prone areas has abruptly decreased, which needs to be addressed on priority. Hence, we investigated the performance of contrasting seed types (seeds harvested from normal and salinity-grown conditions)and cultivars (TG 37A and GG 2) under different water salinity levels. Application of different salinity irrigation water levels (0.5 (control), 2, 4, and 6 dS m ) reduced plant growth and yield attributes and increased the accumulation of sodium in both normal-grown seed (NGS) and salinity-grown seed (SGS) types of peanut kernel and cultivar(TG 37A and GG 2) with a successive increase in levels of salinity established since one and half-decade. This reduction was more prominent in SGS than NGS conditions for both the cultivars. However, the tested parameters were higher in cultivar GG 2 than TG 37A except 100-pod and 100-kernel mass, which were appreciably higher in cultivarTG 37A. Therefore, the reuse of SGS reduced the pod yield of peanuts (22–46%) under different water salinity levels than the NGS.