Výsledky vyhledávání - "Jaroslav Dobrý"

Reconstruction of Air Temperature of the Summer Half-year in Krkonoše (Giant Mountains) Based on the Spruce Tree-rings in the Period 1804 - 1989

Autor: Pavla Štěpánková, Rudolf Brázdil, Jaroslav Dobrý, Josef Kyncl

Publikováno v: Geografie. 102:3-16

The tree-ring width and the maximum wood density of Norway spruce (Picea abies (L.) Karst.) have been examined in order to reconstruct air temperature of the summer half-year during the period 1804 - 1989. The trees examined come from a natural spruc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16df563110344629e65d275276a2e362
https://doi.org/10.37040/geografie1997102010003

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Effect of duration and depth of burial on seed survival ofAvena fatua in arable soil

Autor: Jaroslav Dobrý, Zdeněk Kropáč, Tomáš Havránek

Publikováno v: Folia Geobotanica et Phytotaxonomica. 21:249-262

Seed survival ofAvena fatua L. var.fatua at various depths (0 to 50 cm) in a degraded chernozem was studied over a period of eight years. Statistical evaluation showed that seeds survived significantly during the first two years at depths of 0 to 20

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e16fc5c847589a0fa58f9cd5bbf4acf5
https://doi.org/10.1007/bf02853257

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An explant culture of Tassilian cypress Cupressus dupreziana (A. Camus)

Autor: Jaroslav Dobrý, Jiří Hřib

Publikováno v: Forest Ecology and Management. 8:235-242

In a threatened species Cupressus dupreziana (A. Camus) explants taken from the apical part of shoots were cultured. Successful growth of shoots was achieved in cultures grown in vitro. The shoots were rooted and regenerant plants were obtained. Impo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::56a7f540c67bc7bc6218ff72ad767d96
https://doi.org/10.1016/0378-1127(84)90056-2

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