Evaluation of phenology relationship with yield potential and drought stress tolerance in some of wheat (Triticum aestivum L.) genotypes and varieties in Iran

Proportionality of wheat cultivars growth patterns to the area’s agro climatic condition will improve crop production. The objective of this study was identifying the phenology of a wide range of wheat varieties in Iran، as well as evaluating the relationship between phenology and drought stress tolerance under late season drought stress. In this experiment، 36 wheat genotypes were studied under irrigated and drought stress conditions، at farm of the Agricultural College of Tehran University during 2010-11cropping season. Experimental design was simple lattice with three replications. Phenology، grain yield، grain number per spike and 1000 kernel weight were recorded for all cultivars. The results showed that most of the varieties which had short vegetative duration، subsequently had greater ability to tolerate late season drought stress. Also، under drought stress condition، wheat varieties with short grain filling period had the highest 1000 kernel weight، such as Simineh، Chenab، Stork، Moghan 3، Cross falat hamoon and DN-11.