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585
I 49
I 49
IUFRO Norway Spruce Symposium. Abstracts.Stara Lesna, Slovakia August 31- September 7, 1997
[Текст] : gene makers, genetic diversity and differentiation. - Zvolen : Faculty of Forestry, Technical University, Zvolen, IUFRO Working Party S2.02.11 Norway Spruce Provenances and Breeding, 1997. - 55 с. - Библиогр: В надзаг.:. - free of charge р.
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585
L 31
L 31
Genetics in Silviculture
[Текст] : монография / S. Larsen; Translated by M.L. Anderson, prof. of forestry in the Univ. of Edinburgh. - Edinburgh ; London : Oliver and Boyd, 1956. - 224 с. : figures + tables. - Библиогр: В надзаг.:. - 20-00 р.
Аннотация: This work is bound to stimulate an interest in tree-breeding, not only amongst foresters and forest-owners, but amongst all those who are in the least interested in the living tree.
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Аннотация: This work is bound to stimulate an interest in tree-breeding, not only amongst foresters and forest-owners, but amongst all those who are in the least interested in the living tree.
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06
S92
S92
Parent-progeny relationship in Scots pine (Pinus silvestris L.): Results from three progeny tests with plus and minus tree progenies in southern Sweden
[Text] : доклад, тезисы доклада / C.E. Ehrenberg. - Stockholm : Skoghogskolan, 1966. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 40). - eng. - Библиогр.: с. 51-52. - Б. ц.
Кл.слова (ненормированные):
material and methods -- characteristics of parent trees -- characteristics of progency
Аннотация: It was found that progenies obtained from crosses between plus trees or even crosses between a plus tree and a minus tree progenies of the same provenance were superior in height growth to minus tree progenies; also the crowns were narrower and the branches had right to intermediate angles. Progenies from parent trees with narrow branch angles had comparably narrow angles, too. Other field experiments which ere established in 1956 and included progenies from the same types of crossing. Measurements were made for the first time in 1960 and repeated during the folowing years
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| УДК |
Кл.слова (ненормированные):
material and methods -- characteristics of parent trees -- characteristics of progency
Аннотация: It was found that progenies obtained from crosses between plus trees or even crosses between a plus tree and a minus tree progenies of the same provenance were superior in height growth to minus tree progenies; also the crowns were narrower and the branches had right to intermediate angles. Progenies from parent trees with narrow branch angles had comparably narrow angles, too. Other field experiments which ere established in 1956 and included progenies from the same types of crossing. Measurements were made for the first time in 1960 and repeated during the folowing years
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06
S92
S92
Flowering in a seed orchard of Pinus sylvestris L.
[Text] = Blomningen i en tallfroplantage : научное издание / A. Jonsson, I. Ekberg, G. Eriksson. - Stockholm : Skogshogskolan, 1976. - 38 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 135). - eng. - Библиогр.: 38. - ISBN 91-38-03190-6 : 1.60 р.
Аннотация: Flowering phenology and flowering frequencies were investigated in clones offSwedish and Finnish origin growing in a pine seed orchard at Langtora. One purpose was to estimate the gene contribution of individual clones to the progeny. The frequencies of femeil and male strobili were estimated in 1973-1975. The onset and duration of both female receptivity and pollen dispersal were recorded. The pollen density in the seed orchard was estimated. Great clonal variation prevailed in the seed orchard with respect to the frequency of female and male flowering as well as the onset and duration of female receptivity and pollen dispersal. A good agreement in flowering frequencies and phenological characteristics of the clones between different years was observed. The calculations of the genetic composition of the progeny revealed that the gene contribution of the analysed clones varied considerably. This was mainly due to differences in the frequency of flowering.
Доп.точки доступа:
Ekberg, I.; Eriksson, G.
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| УДК |
Аннотация: Flowering phenology and flowering frequencies were investigated in clones offSwedish and Finnish origin growing in a pine seed orchard at Langtora. One purpose was to estimate the gene contribution of individual clones to the progeny. The frequencies of femeil and male strobili were estimated in 1973-1975. The onset and duration of both female receptivity and pollen dispersal were recorded. The pollen density in the seed orchard was estimated. Great clonal variation prevailed in the seed orchard with respect to the frequency of female and male flowering as well as the onset and duration of female receptivity and pollen dispersal. A good agreement in flowering frequencies and phenological characteristics of the clones between different years was observed. The calculations of the genetic composition of the progeny revealed that the gene contribution of the analysed clones varied considerably. This was mainly due to differences in the frequency of flowering.
Доп.точки доступа:
Ekberg, I.; Eriksson, G.
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