- Tytuł:
- Direct effects of cyclic selection for longer seminal roots in spring barley [Hordeum vulgare L.]
- Autorzy:
- Gorny, A G
- Powiązania:
- https://bibliotekanauki.pl/articles/2048122.pdf
- Data publikacji:
- 1995
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
selection
root length
cyclic selection
barley
spring barley
Hordeum vulgare
seminal root
root
realized heritability - Opis:
- 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.
- Źródło:
-
Journal of Applied Genetics; 1995, 36, 1; 17-26
1234-1983 - Pojawia się w:
- Journal of Applied Genetics
- Dostawca treści:
- Biblioteka Nauki
Artykuł