broj: 7-8/1994
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| IZVORNI ZNANSTVENI ČLANCI | ||
| Mrva, F. | UDK 630* 165.62.001/2 | |
| Significance of Clonal Archives in Gene Pool Conservation and Forest Tree Breeding pdf HR EN | 203 | |
| Summary: Gene pool of forest tree species can be preserved in natural and artificial populations such as nature reserves, seed stands, seed generative plantations and in special purpose plantations (arboreta, clonal archives, seed orchards, provenance trials, progeny tests and clonal tests). Clonal archives as breeding populations have an important role in the preservation of the best part of gene pool of selected forest populations of indigenous and non-indigenous tree species. Living archive in Jastrebarsko, as mainly a clonal archive was founded on an area of (7.435 ha) on land owned by Forest Research Institute, total area 23 ha. The majority of clonal collections was introduced into the archive an a 1971—1975 period. Two smaller seed orchards are within the archive; one composed of Omorika spruce, the other one of Colorado spruce founded in 1983—1984 period. Living archive contains clonal collections of 8 conifer species and one broad-leaved species in the following species structure: Pinus strobus: 40 clones — 200 grafts Pinus sylvestris: 34 clones — 143 grafts Pinus nigra: 63 clones — 228 grafts Larix decidua: 59 clones — 279 grafts Larix leptolepis: 12 clones — 275 grafts Picea abies: 13 clones — 63 grafts Picea omorika: 19 clones — 287 grafts Picea pungens: 25 clones — 297 grafts Juglans regia: 22 clones — 75 grafts There are 23 progenies with 399 genotypes in the generative collection Juglans regia. In the additional dislocated part of the archive which was founded much earlier (1962), a collection of 13 clones of Sudeten larch with 23 grafts and 4 clones of Japanese larch with 6 grafts is situated. In living archive and in the additional part of the archive there is a total of 301 clone with 1976 grafts. Clonal collections in the archive represent an important basis for the intensification of the seed orchards establishment because they can be useful as a source for high quality scions in clonal reproduction. Clones of all species in the archive show good fructification and could be used for the obtaining of selected seed the variability of clonal collections is higher than in seed orchards. One research carried out in the clonal archive of European larch showed that the average germinability of clonal seed samples from 1989 crop was 45% higher, and the growth of seedlings was very good. Living archive offers the possibility of complementing clonal collections for more than 100%. This work was written in the form of scientific monography including a short hystory, pedological characteristics, general and local climate conditions, ecological microdistribution of species, localities of plus trees with their number, clonal lay-out for each species and color photographs (10). Importance of living archive in a gene pool preservation and possibility of selected seed production was discussed from the aspect of genetic diversity in relation to the other natural and artificial resources. Key words: gene pool; clonal archive; conifers; Persian walnut; seed orchards; selected seed | ||
| STRUČNI ČLANCI | ||
| Karavla, J. | UDK 630* 232.5:272 | |
| The Parks of Samobor (near Zagreb) and their Dendrological Importance pdf HR EN | 221 | |
| Lneniček, Z. | UDK 630* 624 | |
| Development of Planning systems in »Hrvatske šume« p.o. Zagreb pdf HR EN | 235 | |
| Kondres, D. | UDK 630* 95 | |
| Forest Management of the »MACELJ« Management Unit pdf HR EN | 241 | |