Evaluation of agronomical and physiological characters of wheat (Triticum aestivum L.) genotypes to heat stress
Imran Khan, Sawaira Jadoon, Ahmad Zada, Amir Zaman Shah, Adil Altaf
Heat stress is a major environmental factor limiting wheat productivity in most cereal growing area worldwide. This study was conducted to analyze the influence of heat stress on the performance of agronomical and physiological characteristics of wheat germplasm at NARC Islamabad during 2014- 2015. Different yield-related trait was evaluated by using CRD design with three replicate. The result indicates that extreme temperature causes reduction to grain yield and yield components such as spike length, number of grains/spike, grain weight/spike and biomass. Obtain result indicates that all genotypes responded differently against evaluated temperature as compare to optimum temperature. Among all genotypes, 1067, 1123, 1124 and 1137 confirm more tolerant to heat stress regarding grain weight/spike, the number of grain/spike/, biomass, membrane stability, and total soluble sugar content. It is suggested that heat-tolerant varieties should be utilized in a breeding program for the development of wheat varieties having heat tolerance at different growth stages of plants and more research study must be conducted to evaluate the progress of potential heat acceptable genotypes in high temp regimes.
Imran Khan, Sawaira Jadoon, Ahmad Zada, Amir Zaman Shah, Adil Altaf. Evaluation of agronomical and physiological characters of wheat (Triticum aestivum L.) genotypes to heat stress. International Journal of Multidisciplinary Research and Development, Volume 7, Issue 12, 2020, Pages 13-19