Description :

Plant breeding is an art and science which tells us ways and means to change the genetic resistance against biotic and abiotic stress 1 increased yield majority of our breeding programmes aims at increased yield this is achieved by developing more efficient genotypes the classical examples are utilization of dee gee woo. Compared with concepts on age related biotic stress resilience advancements in the abiotic stress field are relatively limited in this review we focus on current knowledge of ontogenic resistance to abiotic stresses highlighting examples at the organ leaf and plant level preceded by an overview of the relevant concepts in plant aging. Salt stress limits plant productivity and growth due to osmotic stress nutritional imbalance and oxidative stress ashraf and wu 1994 liang et al 2018salinity leads to sodium na and chloride cl ion accumulation in the cytosol which is detrimental to the cell tuteja 2007an increase in the amount of na and cl disrupts the noncovalent interaction between amino