DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 10-12/1991 str. 24 <-- 24 --> PDF |
Krstiniæ , A. (1967): Procjena stupnja nasljednosti visina i promjera za bijelu vrbu (Salix alba L.) izraèunata iz klonskog testa kod starosti biljaka 1/1. Šum. list 91, 48—54, Zagreb. Krstiniæ , A. (1981): Problematika multiklonskih kultura stablastih vrba. Radovi 44, 121—126, Šumarski institut Jastrebarsko. Krstiniæ , A. (1984): Fenotipska stabilnost, adaptabilnost i produktivnost nekih klonova stablastih vrba. Glasnik za šum. pokuse, pos. izd. 1, 5—24, Zagreb. Krstiniæ , A. (1990): Fenotipska stabilnost, adaptabilnost i produktivnost nekih klonova stablastih vrba II. Šum. list 114, 6—8, 227—235, Zagreb. Mebrahtu, T. i Hanove r, J. W. (1989): Heritability and expected Gain Estimâtes for Traits of Black Locust in Michigen, Silvae Genetica 38, 125—131, Frankfurt. Namkoong, G., Usanis, R. A. i Silen, R. R. (1972): Age-related variation in genetic control of height growth in Douglas-fir. Theor. and App. Genet. 42, 151—159. Randall , W. K. i Cooper , D. T. (1973): Predicted Genotypic Gain from Cottonwood Clonal Tests, Silvae Genetica 22, 5—6, 165—167, Frankfurt. Sivecki, R. i Giertych, M. (1965): The estimation of Genetic Parameters for Rooting Ability of Cuttings and one Year Height of Poplar Hybrids, Acta Soc. Bot. Poloniae, Vol. XXXIV, No 3, 533—547. Toda, R. (1963): Mass Sélection and Heritability, Studies in Forest Tree Brceding FAO, Proc. World Cons. For. Gen. Tree Improv. I, 2a/2. Vidakovic, M. i Krstiniæ, A. (1985): Genetika s oplemenjivanjem šumskog drveæa, Liber, 505 pp, Zagreb. Wright , J. W. (1976): Introduction to Forest Genetics. Académie Press, 463 pp, New York. Žufa, L. (1963): Drvna masa i prirast bele vrbe u prirodnim formacijama Podunavlja i donje Podravine, Topola 36/37; 63—70, Beograd. Estimate of Genetic Heterogeneity/Heritability and Genetic Gain for some Economicaliy Important Traits in Clonal Tests of Arborescent Wilîows S u m m a r y Heritability estimâtes for total heights, diameters and volume stock per ha, and for genetic gain for volume production vvere computed by sélection of the best clones for growing in the second vegetative génération at différent plantation âges and spacing. A high degree of genetic control of the tested traits, with sélection of one or five best clones, enables an increase of wood stock production by 43%, when compared to site quality I of the Danube and lower Drava areas, depending on the habitat, plantation age and spacings of the clone mixture. Parameters of variability for the volume stock production hâve changée! in the course of the ontogenetic development. Better estimâtes of heritability for total height were obtained in older plantation âges where spacing was 3 x 3 m, while for spacing 4x4 m objective estimâtes of heritability may be made at younger plantation âges by means of diameter and volume stock/ha. Cal dilations of the expected estimâtes of genetic gain compared with expérimental data express no significant statistica! déviations. For reasons of securing stability of the ecosystem, priority was given to five superior clones with diversified genetic constitutions in relation to one best clone, regardless of the possibility of realizing lesser genetic gains through multiclonal plantations. Key w o r d s : heritability, genetic gain, clonal tests, white willow |