Abiotic stress responses of cotton: A review

Abstract

The growth and yield of many crops, including cotton, are affected by water deficit. Cotton has evolved drought specific as well as moderately salt tolerant. The basic morpho-physiological, biochemical responses to drought, salt, temperature and light are discussed in this review. The key physiological responses against drought stress in cotton, including stomata closing, root development, cellular adaptations, photosynthesis, abscisic acid (ABA) and jasmonic acid (JA) production and reactive oxygen species (ROS) scavenging, have been identified by researchers. High temperatures under water deficit leads to photo oxidation, and temperature fluctuations also influence the phenology of crop. The blue and red light has maximum positive influence on photosynthetic reactions. The current review article highlights the abiotic stresses and the responses of the plant towards stress.