ABSTRACT
This chapter explores a medium density genome map based on 100 doubled haploid progeny derived from winter × spring barley cross. Cold tolerance in this population will be measured in both controlled environment and field tests. The chapter aims to develop innovative selection criteria for tolerance to cold stresses: molecular and biochemical markers that are linked to loci controlling tolerance to freezing stresses. The complex genetic basis of cold tolerances in cereals has traditionally been studied through techniques of quantitative analysis. Cold tolerance can be measured in field tests or in controlled environments. Controlled freeze tests have demonstrated that winter cereals species and genotypes differ in their hardening profiles and cold tolerance. The lack of progress in direct selection for winter hardiness in barley and other winter cereals may be attributed to causes other than fixation at all major loci and may include problems with the genetic models and estimation procedures used inappropriate environmental reference populations.
