Evaluation of physiological, enzymatic, biochemical, nutritional parameters and stress tests in wheat genotypes

Climatic changes are found to have deleterious effects on crop growth and development. Global warming is causing frequent rise in ambient temperature rapidly for last two decades. The increased temperature during grain formation and filling phase of crop growth has emerged as a serious problem all over the world. The grain-filling rate of wheat, like other cereals, depends largely on leaf photosynthesis and water soluble carbohydrates (WSCs) transported to the grain from leaves, stem and ear reserves. The present study entitled evaluation of physiological, enzymatic, biochemical, nutritional parameters and stress tests in wheat genotypes was carried out during rabi 2018. Geographically, Rahuri is situated at 19034 N latitude and 74064 E longitudes with an altitude of 536 meters above mean sea level. Two genotypes with two checks were grown in field conditions with varying sowing dates, viz., 21st November 2017 (D1), 21st December 2017 (D2) and 21st January 2018 (D3) and physiological, enzymatic, biochemical and nutritional parameters analysis were conducted timely. Results clearly revealed that all the characters recorded and analysed found to be affected by elevated temperature. Genotypes, viz., NIAW-303 3 and NIAW-199 4 (Phule Samadhan) were found to be more efficient for withstanding this stressful elevated temperature condition.