Cytogenetics Laboratory, Department of Botany, Bharathiar University, Coimbatore 641 046.
The effect of rye chromosome substitution and modification were studied on various kernel characters in sixty six hexaploid triticales. Triticales with a 2R/2D substitution and/or a modified rye chromosome(s} exhibited ‘medium’ to ‘very low’ degree of kernel shrivelling as observed through increased grain weight and volume of water displaced by 100-grains. Triticales with a 2R/2D substitution coupled with a modified rye chromosomes like 4R, 6R or 7R, the seed shrivelling is very low. 2R/2D substitution and modification in the rye chromosomes also had a favourable effect on seed setting. Triticales with full complement of rye chromosomes showed ‘medium’ to ‘high’ kernel shrivelling and low seed set.
Triticale, RID substitution, modification, kernel characters
