low- temperature (lt) tolerance is an economic trait in winter wheat that determines the plants’ ability to successfully cope with below freezing temperatures. to identify the genomic regions associated with lt tolerance in hexaploid wheat, an f2:3 population was produced from crossing between winter type and tolerant parent, mirnovoskaja 808 (lt50 = -20oc), and spring type and susceptible pare...

This study was carried out to evaluate the genetic effect of quantitative trait loci (QTLs) conferring drought tolerance in wheat. A population of 120 F(2) individuals from the cross between the drought-tolerant S-78-11 and drought-sensitive Tajan cultivars were analyzed for their segregation under drought stress conditions. The relative water content under drought stress conditions exhibi...

for manipulating QTL in foreground selection. Further, they investigated the combination of foreground and Marker-assisted selection can accelerate recovery of the recurrent background selection in QTL introgression. Openshaw parent genome (RPG) in backcross breeding. In this study, we used et al. (1994) determined the population size and marker computer simulations to compare selection strateg...

pulmonary hypertension syndrome (ascites) is a metabolic disorder in fast-growing broilers. inconsistency of oxygen requirement and the cardiovascular ability make the birds susceptible to ascites. incidence of ascites was accompanied by right ventricular hypertrophy, fluid accumulation in the abdominal cavity and finally mortality. the objective of the current study was to review the genetic b...

Computer simulations were used to study the efficiency of marker-assisted selection (MAS) based on an index combining the phenotypic value and the molecular score of individuals. The molecular score is computed from the effects attributed to markers by multiple regression of phenotype on marker genotype. The results show that in the first generation the ratio RE of the expected efficiency of MA...