Yield potential of red clover strains after combined selection for root rot resistance and for productivity
1996
Vanco, B. (Vyskumny Ustav Rastlinnej Vyroby, Piestany (Slovakia))
The productivity of red clover strains after single selection of plants with differing above-ground matter weight was studied in combination with various attacks by Fusarium root rot. In the field selection, the total variability of above-ground matter weight, plant seed, and percentage of dead plants in progenies was affected mostly by degree of maternal plant attack. Green matter and seed production was highest in progenies of plants with the lowest degree of attack. On the contrary, the percentage of dead plants was highest in progenies of plants with the maximum degree of attack. Maternal plant selection according to above-ground matter weight had no significant character; however, positive tendencies were observed. The interaction between degree of attack and weight class of maternal plants, affected mostly by strains with the lowest degree of attack, was highly significant. In the greenhouse, selection according to above-ground matter weight of disease-free maternal plants was exhibited more. In the progeny it was exhibited positively in green matter yield and in seed yield, while statistically a significant interaction between maternal original plants and above-ground matter weight was found
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