A REVIEW ON HEAT STRESS RESPONSE IN DIFFERENT GENOTYPES OF TOMATO CROP (Solanum lycopersicon L.)

Abstract

Heat stress caused by amplified temperature is an agricultural dilemma in most of the areas of the world. Temporary or persistently higher temperature grounds an array of biochemical, morphological and physiological changes in plant species that affect plant growth and development and direct to a severe decline in economic yield. This unpleasant effect may be mitigated by developing crop plants with enhanced thermo tolerance by means of various genetic approaches. In the same way as tomato is the most important vegetable crop by its use. It is also affected by high temperature like flower dropage, dryness of anthers, less fruit set, fruit dropage and sunscalled are the major problems due to increase in temperature from its optimum level.  Based on an absolute understanding of such mechanisms, potential genetic strategies ought to make to improve tomato crop for heat-stress tolerance that includes traditional and contemporary molecular breeding protocols and genetic engineering approaches. Addition to genetic approaches, crop heat tolerance could be improved by preconditioning of plants under diverse environmental stresses or exogenous use of osmoprotectants such as proline. By creating thermo tolerance is an energetic procedure by which significant amounts of tomato crop resources are converted to structural and functional protection to get away from the damage caused by heat stress, with biochemical and molecular aspects of thermo tolerance in tomatoes are comparatively well understood. The objective of our study was to collect and elaborate the work done by different scientists at different levels and approaches to create heat tolerance in tomato crop.