Wszystkie pola: conservation programme - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Gene pool conservation programme of Norway spruce Picea abies (L.) Karst. in the Beskid Mts
Autorzy:: Jurasek, M
Powiązania:: https://bibliotekanauki.pl/articles/41497.pdf
Data publikacji:: 2004
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: Czech Republic
Czech State Forests
Norway spruce
Picea abies
conservation
reproduction
seed orchard
clone
artificial regeneration
seed stand
gene pool conservation
conservation programme
seed bank
Opis:: The paper describes the measures adopted by the Czech State Forests for the conservation and reproduction of the Norway spruce gene pool in the Moravian-Silesian Beskid Mts. In addition to the assurance of natural regeneration in genetically valuable stands and the use of high-quality autochthonous stands as seed sources for artificial regeneration, the measures include selection of plus-trees, establishment of seed orchards, seed stands and clone archives, and identification of gene pools. Seeds of the most valuable regional populations are deposited in a seed bank.
Źródło:: Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Genetic evaluation of seeds of highly endangered Pinus uliginosa Neumann from Wegliniec Reserve for ex-situ conservation program
Autorzy:: Lewandowski, A
Burczyk, J.
Wachowiak, W.
Boratynski, A.
Prus-Glowacki, W.
Powiązania:: https://bibliotekanauki.pl/articles/57105.pdf
Data publikacji:: 2005
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: mating system
conservation
hybridization
Wegliniec Reserve
peat bog pine
Pinus uliginosa
conservation programme
genetic variation
Opis:: Peat-bog pine Pinus uliginosa Neumann has become extinct or rare in many parts of Europe. We have investigated the levels of genetic variation and inbreeding in seeds collected from a highly endangered reserve of this species in Poland, using allozymes as genetic markers. Generally, a high level of genetic variation was observed. The mean expected heterozygosity was 0.376, while average (Na) and effective (Ne) numbers of alleles per locus were 2.45 and 1.67, respectively. Nevertheless, we have detected relatively low levels of outcrossing, and potential biparental inbreeding. The population-wide multilocus outcrossing rate was estimated to be 0.706 (±0.091), while the minimum variance mean of single-locus estimates was distinctly lower (ts=0.611). The estimates of outcrossing calculated for individual trees ranged widely from 0.051 to 1.017, indicating the complexity of outcrossing patterns. The investigated population of P. uliginasa from Węgliniec is small and surrounded by extensive forest stands of P. sylvestris. Our three-year records of phenological observations demonstrated that flowering periods for P. uliginosa and P. sylvestris overlap, allowing for cross-pollination. The possibility of P. uliginosa pollination by P. sylvestris creates a potential danger of genetic erosion of the P. uliginosa gene pool. Nonetheless, based on a species specific cpDNA marker we have found that among 533 seedlings of P. uliginosa there were only six seedlings carrying cpDNA marker specific for P. sylvestris, indicating that such hybridization seems to be rare.
Źródło:: Acta Societatis Botanicorum Poloniae; 2005, 74, 3
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki