Direct effects of cyclic selection for longer seminal roots in spring barley [Hordeum vulgare L.]

• Autorzy: Gorny A G
• Języki publikacji: EN

Abstrakty

EN

Cyclic pedigree selection for longer seminal roots was performed in the F₂, F₃ and F₄ generations of hybrid population of spring barley. The total length of roots was measured in seedlings grown in filter-paper rollers. The intensity of selection was 20% (C₁, C₂ cycles) and 26% (C₃). Selection was effective. On an average, the finally selected F₅-pedigrees formed 6% longer seminal root system than the initial F₂'s and much of them exhibited 7-16% improved rooting when compared with the best parent in a sand-vermiculite pot culture. Realized heritabilitiy coefficient of the root length ranged from 0.21 to 0.37 when assessed by the ratio of selection response to selection differential, while those estimated by the parent- offspring regressions attained 0.40-0.53. The obtained results suggest that progeny evaluation and/or selection delayed for later generations should be essential for more effective root selection in barley.

Słowa kluczowe

EN

selection; root length; cyclic selection; barley; spring barley; Hordeum vulgare; seminal root; root; realized heritability

• Wydawca: -
• Czasopismo: Journal of Applied Genetics
• Rocznik: 1995
• Tom: 36
• Numer: 1
• Opis fizyczny: p.17-26,tab.

Twórcy

autor

Gorny A G

• Institute of Plant Genetics, ul.Strzeszynska 34, 60-479 Poznan, Poland

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