Assessing genetic variation to predict the breeding value of winter triticale cultivars and lines.
The objective of this study was to evaluate the usefulness of amplified fragment length polymorphism (AFLP) analyses for selection of the best parents for breeding of hybrid winter triticale. Phenotypic diversity was measured for 8 agronomic traits in 10 parents and 27 F1 hybrids. Genotypic diversity was measured by 91 AFLP markers. Coefficients of correlation of genetic similarity (AFLP-GS) with both Euclidean distances and mean values of the traits were generally not significant. A correction of the preliminary binary matrix into trait-specific derived matrices increased the values of 5 correlation coefficients to a significant level. The correlation of AFLP-GS with mid-parent heterosis of grain weight per plant was low but significant (r = -0.452). Our study confirms the effectiveness of marker preselection for obtaining AFLP-GS better correlated with heterosis. The use of derived matrices is promising for reducing the number of cross combinations tested for specific combining ability.
Góral
Halina
H
Department of Plant Breeding and Seed Science, Agricultural University, Kraków, Poland.
Tyrka
Mirosław
M
Spiss
Ludwik
L
D000383:Agriculture; D001947:Breeding; D002523:Edible Grain / Q000235:genetics*; D005544:Forecasting; D005819:Genetic Markers; D014644:Genetic Variation; D006823:Hybrid Vigor; D021141:Nucleic Acid Amplification Techniques; D010641:Phenotype; D012641:Selection, Genetic
D005819:Genetic Markers