Development and assessment of secondary gene pool of triticale (x <i>Triticosecale</i> Wittm.) for use in breeding for semidwarfness and resistance to pre-harvest sprouting
Hybridization of substituted forms of hexaploid wheat-rye hybrids was carried out with modern crop cultivars for developing the secondary gene pool of triticale. Eight stable recombinant lines with different types of D(A)- and D(B)-chromosome substitutions were selected out of hybrid populations F<sub>4</sub> during caryotyping. Morphometric analysis of the line material and laboratory assessment of its resistance to pre-harvesting sprouting were made, with allelic compositionof <i>Rht-B1</i> and<i> Rht8</i> genes for semidwarfness being investigated. On the basis of the total data obtained, two recombinant lines of hexaploid triticale promising for breeding were selected.