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 toascertain 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 ofcontrasting seed types (seed harvested from normal and salinity grown conditions)and cultivar (TG 37A and GG 2) under diff erent water salinity levels. Application ofdiff erent salinity irrigation water levels (0.5 (control), 2, 4, and 6 dS m ) reduced plantgrowth and yield attributes and increased the accumulation of sodium in both normalgrown 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 oneand half-decade. This reduction was more prominent in SGS than NGS conditions forboth the cultivars. However, the tested parameters were higher in cultivar GG 2 thanTG 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%) underdiff erentwatersalinitylevelsthantheNGS.Hence,theseedharvestedfromsaline