- Tytuł:
- Frequency of transgression and gene distribution in barley doubled haploid populations from first and second cycle hybrids
- Autorzy:
-
Surma, M
Adamski, T.
Kaczmarek, Z.
Kapala, A. - Powiązania:
- https://bibliotekanauki.pl/articles/2044239.pdf
- Data publikacji:
- 1998
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
transgression
gene dispersion
doubled haploid
grain yield
hybrid
barley
first cycle hybrid
second cycle hybrid
recurrent selection
gene distribution - Opis:
- Barley doubled haploids (DH) derived from first and second cycle hybrids were investigated in field experiments. Parental lines designed for the second cycle hybrids were three doubled haploids from the first cycle hybrids, which were observed to have the highest grain yield. Yield structure characters, crude protein content and protein fractions were analysed. Phenotypic and genetic variability and the frequency of transgression in the studied populations were calculated. For the studied traits additive, [d], and epistatic (additive x additive), [i], effects as well as coefficient of gene dispersion were estimated. It was found that the phenotypic and genetic variability of DH populations derived from second cycle hybrids was higher than that of the original population for all the studied traits except grain yield. A greater proportion of transgressive lines than in the original population was also observed in populations from second cycle hybrids. Only one DH line exceeding the high yielding parent was found among 141 lines under study. The relationship between the frequency of transgressions and gene dispersion was recorded: the greatest number of transgressive lines occurred in those traits for which the dispersion was observed.
- Źródło:
-
Journal of Applied Genetics; 1998, 39, 3; 237-247
1234-1983 - Pojawia się w:
- Journal of Applied Genetics
- Dostawca treści:
- Biblioteka Nauki
Artykuł