Effect of the Application of Foliar Jasmonic Acid and Drought Stress on Grain Yield and Some Physiological and Biochemical Characteristics of Chenopodium quinoa Cultivars

Water shortage is a critical problem touching plant growth and yield in arid semi-arid areas such as Iran. Plant hormones jasmonic acid (JA) play crucial role altering morphology response to stress. To investigate the effect of JA drought stress on grain some physiological biochemical characteristics quinoa cultivars, split-plot factorial experiment based randomized complete block design with three replications was conducted at Kerman Agricultural Natural Resources Research Education Center over two crop years (2018-2019). In this experiment, main factor levels including non-stress 60% 90% soil available moisture depletion foliar application (0, 1 2 mg L-1) cultivars (Giza1, Titicaca, Q29) respectively, were sub factor. The maximum (3775 kg ha-1) obtained Giza1 cultivar under condition L-1 application. greatest protein total chlorophyll content Titicaca by 18.17% 1.83 g-1 fresh leaf weight, respectively. opposite trend, amount malondialdehyde observed non-use JA. general, given results study, it can be stated that caused an increase reducing harmful effects improving growth.