m. abedini esfahlani

"Khalil" wheat variety with the pedigree of Bow"s"/Vee"s"//1-60-3/3/Cocoraque 75/4/Chamran has derived from national wheat breeding program. The cross of this variety was made in Karaj in 2003-04 cropping season and then from F2 generation in 2005-06 cropping season, its segregating lines were studied through a shuttle breeding program between Iranshahr and Kelardasht research stations. The new variety was evaluated in Elite Regional Wheat Yield Trial (ERWYT) in the southern warm and dry zones' research stations during 2012-14 cropping seasons. The results confirmed that this new variety has yield stability in the studied research stations in southern warm and dry agro-climatic zone. Considering high grain yield, high level of resistance to different physiological races of stripe rust in different locations (hot spots), good grain quality as well as good agronomic performance and resistance to shattering, this line was selected and officially released as Khalil in 2017. Khalil, is adapted to irrigated wheat growing areas in the southern dry and warm agro-climatic zone in Iran, where in most of these regions a high disease pressure especially occurred by yellow rust is a limited factor for wheat production.

To study different assessment methods of resistance to spread of Fusarium head blight, the resistance of 28 genotypes of spring wheat (Triticium aestivum L.) was evaluated with 2 isolates of F. graminearum in the greenhouse by point injection method. Data for final disease rating, collected 28 days after inoculation, calculation of area under disease progress curve (AUDPC) based on disease scores on 7, 14, 21 and 28 days after inoculation and percentage of infected rachises, were statistically analyzed. For the three assessment methods variation among genotypes was significant. Significant correlation among 3 assessment methods indicates that these methods measured the same basic process of disease spreading within the head. The similarity of resistant evaluation results based on diseased spikelets. Final disease rating and AUDPC and rachis infection, indicated that rachis is the most important barrier for Fusarium spread in wheat spikes.