Temat: genetic evaluation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Modelling test day data from dairy cattle
Autorzy:: Szyda, J
Liu, Z.
Powiązania:: https://bibliotekanauki.pl/articles/2043892.pdf
Data publikacji:: 1999
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: animal genetics
statistical modelling
cattle
genetic evaluation
dairy cattle
Źródło:: Journal of Applied Genetics; 1999, 40, 2; 103-116
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of genetic variability within sweet cherry (Prunus avium L.) genetic resources by molecular SSR marker
Autorzy:: Patrzak, J.
Henychová, A.
Paprštein, F.
Sedlák, J.
Powiązania:: https://bibliotekanauki.pl/articles/12687772.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: Czech Republic
plant cultivation
sweet cherry
Prunus avium
fruit tree
genetic variability
genetic evaluation
genetic resource
molecular marker
SSR molecular marker
EST-SSR marker
Opis:: Sweet cherry is a vegetatively propagated, perennial plant with high level of heterozygosity and ancient breeding history. Therefore, it is necessary to keep, conserve and evaluate known genetic resources for future breeding programs and fruit production stability. In present, the utilization of DNA molecular genetic analyses is the best suitable method for evaluation of individual accessions, thus we eliminated duplications and characterized the genetic relationships. In our work, we used PCR primer combinations for 19 SSR and 2 EST-SSR loci for analyses of 123 current, old and local sweet cherry cultivars from Czech genetic resources of Research and Breeding Institute of Pomology in Holovousy. In total, 115 polymorphic fragments were amplified, which we used for hierarchical cluster analysis of genetic variability. The result dendrograms were divided into three main clusters and ten subgroups. Clustering corresponded to genealogical and geobotanical characteristics of individual accessions as breeding history of several known accessions.
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 157-165
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Cytological and genetic evaluation of anther culture-derived doubled haploids in barley
Autorzy:: Szarejko, I
Falk, D E
Janusz, A
Nabialkowska, D
Powiązania:: https://bibliotekanauki.pl/articles/2046612.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cytological analysis
doubled haploid
morphological variation
genotype
barley
genetic evaluation
gametoclonal variation
chlorophyll mutation test
Hordeum vulgare
anther culture
Opis:: Gametoclonal variation among anther culture-derived plants of three barley genotypes was estimated on the basis of cytological analysis (DH1, DH2 generation), observation of morphological variants (DH2, DH3) and chlorophyll mutation test (DH2, DH3). Individual head rows were grown in the field to detect possible chimeric structure of regenerants and to assess the number of variants and mutations in each line. Spontaneously doubled plants were the most frequent class (70%) among regenerants and almost 90% of them were completely fertile. There was a difference in proportion of haploids produced by different genotypes, but the highest frequency observed did not exceed 21%. The remaining regenerants were tetraploid, and contained chromosomal mutations or chimeras. In total, there were about 15% of polyploids and plants carrying chromosomal aberrations (translocations, inversions) among DH1 individuals. The changes in chromosome number and structure were the main source of observed variation. The level of gene mutation induced in vitro was relatively low. No more than 1% of microspore-derived plants expressed visible morphological changes in DH2 progeny. Only two morphological variants derived from the Bruce cultivar proved to be homozygous mutants (dwarf type) stable up the to third generation. The frequency of DH plants carrying chlorophyll mutation was 5.8%, but most of them (82%) were chimeric and had only a small mutation sector. The level of gametoclonal variation depended on the donor plant genotype. The highest proportion of variants and mutations was observed among DH plants derived from the Bruce cultivar, while the lowest was recorded among plants regenerated from anther culture of the doubled haploid line H930-36. Mechanisms leading to the observed variation and implications resulting from the presented experiments concerning implementation of anther culture in barley breeding were discussed. It was concluded that this method resulted in a high frequency of spontaneous doubling, a low frequency of genetic changes, and being less time and effort-consuming than the ’Bulbosum’ technique, can be applied to most barley breeding programs.
Źródło:: Journal of Applied Genetics; 1997, 38, 4; 437-452
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The selection index and single-and multi-trait animal model evaluation of Polish Black-and-White cows
Autorzy:: Jagusiak, W
Zarnecki, A.
Powiązania:: https://bibliotekanauki.pl/articles/2043444.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Polska
lactation
Polish Black cow
dairy cow
milk production
dairy cattle
animal model
fat content
breeding value
cow
selection index
genetic evaluation
Polish White cow
protein content
Źródło:: Journal of Applied Genetics; 2000, 41, 3; 171-179
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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