The Gs from Turkey based IWWIP program were specifically adapted to the Es in clusters E-III and E-V, while from Iranian and some North American Gs were well adapted to those of E-I.
Development and identification of high yielding Gs with wide adaptation and resistance to biotic and abiotic stresses remain the top priorities of the IWWIP program.
Generally speaking, five out of seven North American and two out of five IWWIP program derived breeding lines, not including Bezostaya-1 in their pedigrees, had higher yielding performances, while three out of five Bezostaya-1 derived lines, which were all of them from IWWIP program, were low yielding, tall in stature, late in maturity, susceptible to the leaf diseases: i.e.
In this study, we have screened IWWIP breeding lines against leaf diseases during the cropping season in most of corresponding Es, especially in Turkey, Kenya, Ukraine and Russia.
Clustering based on mean grain yield performance indicated that the IWWIP test Es in cluster E-II, for example, were similar to each other based on climatic characteristics, soil fertility and yield potentials.