Studies on lines of 42 chromosome triticale (x triticosecale Wittmack). Pt. 1. Influence of rye chromosome substitution on some breeding characters in spring triticale
1988
Sowa, W. (Instytut Hodowli i Aklimatyzacji Roslin, Radzikow (Poland). Zaklad Radiobiologii)
Studied were performed on 18 sister lines, 11 lines not related and 2 lines with complete R genome. Triticale 6TA-250 and wheat Anza - parental varieties of tested sister lines were used as a check. Comparative experiments with substitution lines and parents or check form, proved that, introduction of D-genome chromosomes in place or R-genome chromosomes caused: reduction in stem and spike length, decrease in kernel mass per ear and number of kernel and spikelets per spike, decrease of resistance to powdery mildew (Erysiphe graminis) in comparison to parental variety with complete R-genome, decrease in tolerance to low pH and aluminium ions. Increase in thousand kernel weight, protein content, lysine content, lodging resistance, tillering and resistance to brown rust (Puccinia recondita). Chromosome interactions affected the degree of expression of majority of tested characters. These interactions increased the variability beyond the medium values estimated for parental varieties. Lines with complete R-genome showed the best integrated agronomic traits
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