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[Text] : доклад, тезисы доклада / C.E. Ehrenberg. - Stockholm : Skoghogskolan, 1966. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 40). - eng. - Библиогр.: с. 51-52. - Б. ц.

УДК

06

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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[Text] = Proveniensforsok med kust- och inlandstall : научное издание / C.E. Ehrenberg, A. Gustafsson. - Stockholm : Skogshogskolan, 1971. - 36 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 95). - eng. - Библиогр.: с. 22. - 1.00 р.

УДК

06

Аннотация: Stands of Scots pine along the south-eastern coast of Sweden differ from inland stands at the same latitude as regards frequency of trees with broad crowns and crooked stems. In oder to investigate the nature and extent of the differences, a provenance trial was established with material of coastal and inland origin. The experimental design involved testings at two sites (coastal and inland), at two spacings at each site and with two methods of establishment (sowing and planting). Differences between provenances were established as regards germination, survival, occurrence of prolepsis and some blanching characteristic. Inland pines were less well adapted to coastal conditions than were coastal pines to inland environment. Different methods were demonstrated.


Доп.точки доступа:
Gustafsson, A.
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