PJB-2018-540
IMPACT OF SALINITY ON CROPS –I: ROLE OF SEED PRIMING TECHNIQUES IN THE ADAPTABILITY OF CROPS TO SALINE CONDITIONS
Zahir Muhammad
Abstract
Salinity, a leading problem in agriculture, has been regarded as a major limiting factor in growth performance of crops with substantial yield losses. Although different crops respond differentially to salt stress, nearly all physiological, biochemical, developmental and growth processes of all crops are affected by salinity to some extent. Major effects of salinity on crops include reduced uptake of water and nutrient, the altered rate of photosynthesis, respiration and transpiration, stomatal conductance, and ion toxicity which collectively reduce their growth and yield potentials. Development of salt tolerant crops through applied biotechnology seems an ideal approach, however, research in that domain is a novice quest. One of the best sustainable approaches in salt stress management is the employment of pre-sowing seed priming techniques involving different priming agents because they do not pose any ecological or environmental problems. In this review, we examine the effects of salinity on major cultivated crops and the potential role of seed priming in helping them to adjust to salinity stress.
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