Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Lech Urbaniak"'
Autor:
Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 63, Iss 1, Pp 77-81 (2014)
The studies included 9 populations of Carex arenaria L. and 7 populations of Carex ligerica Gay, compared with each other on grounds of variability analysis, related to rhizome characters. The sedges reach in the area of Poland their eastern range li
Externí odkaz:
https://doaj.org/article/0b78a1095a2c44a9ad89acfba9ea5e80
Autor:
Tadeusz Krzaczek, Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 54, Iss 4, Pp 429-441 (2014)
Phenolic acids were investigated in the needles of eight different pine populations, five of which were Pinus mugo, two -- P. silvestris and one a critical form described by Neumann as P. uliginosa. Twenty different phenolic acids were detected. Six
Externí odkaz:
https://doaj.org/article/d5f96d05123e41d387fa15b045fc5c50
Autor:
Jerzy Szweykowski, Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 51, Iss 3-4, Pp 441-452 (2014)
Intra- and interpopulational polymorphism in the production of phenolic compounds is described in Polish populations of Pinus sylvestris L. Two mutually exclusive forms of pine trees are present in changing proportions in all populations studied. Thi
Externí odkaz:
https://doaj.org/article/3978277058354bb69c03a21a720f88a9
Autor:
Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 67, Iss 3-4, Pp 263-268 (2014)
The experimental material involved 7 Carex ligerica Gay populations which were cultured in standardised conditions in a greenhouse before their spikes were collected for morphological studies. Four characters reflecting size of male and female glumes
Externí odkaz:
https://doaj.org/article/31c65e39b64748cda6d4a550d3dbfd5c
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 69, Iss 1, Pp 65-74 (2014)
480 spikes from 16 populations of Carex arenaria L. planted in an experimental garden were collected and analysed for 4 female and 4 male glumes each. The characteristic of the interpopulational differentiation on the area of Poland was based on mult
Externí odkaz:
https://doaj.org/article/fc95716890b748e8ac24411b185ba3a2
Autor:
Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 66, Iss 3-4, Pp 371-378 (2014)
Biometric characters of seeds and wings served to describe interprovenance differentiation of Scots pine in Europe. Grouping analysis was applied, Mahalanobis distances were calculated as well as Hotellings T2 statistics were applied. The similarity
Externí odkaz:
https://doaj.org/article/2f65bfaf91bf466ca60e00d6446215e9
Autor:
Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 61, Iss 2, Pp 265-271 (2014)
The purpose of the study was to compare two taxonomically close species of sedges - Carex arenaria and Carex ligerica. The analysis was based on 6 characters of leaves. The populations studied were grown for the period of at least one year under the
Externí odkaz:
https://doaj.org/article/271cab64b176462cb74f982107129836
Autor:
Kornelia Polok, Marta Przybyła, Włodzimierz Pisarek, Ewa Chudzińska, Roman Zieliński, Lech Urbaniak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 78, Iss 1, Pp 29-36 (2011)
The aim of this study was to characterize the turfosa form of Pinus sylvestris from the Gazwa peat bog reserve in terms of 16 anatomical needle traits and to determine whether pines with a typical morphotype inhabiting the peat bog have been so succe
Externí odkaz:
https://doaj.org/article/5b9224bd55694da1a21f79d563ba47ac
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 72, Iss 1, Pp 37-44 (2011)
We investigated the phenotypic variation of five morphological needle characters of Scots pine (Pinus sylvestris L.) in three populations. Two of the populations occurred in bogs and the third one formed a degraded fresh pine forest showing some feat
Externí odkaz:
https://doaj.org/article/7f4d14ac443b4a1ea560fc3869f99f4c
Autor:
Weronika Barbara Żukowska, Andrzej Lewandowski, Błażej Wójkiewicz, Monika Litkowiec, Roman Rożkowski, Lech Urbaniak, Jan Kowalczyk
Publikováno v:
Dendrobiology. 89:46-55
Silvicultural practices can alter forest genetic resources in unpredictable ways, thereby influencing the adaptive and evolutionary potential of forest populations. This is especially alarming in the case of species with more northern distribution ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c599e68facf8c86c2b8c3dd33bad1b2d
https://doi.org/10.12657/denbio.089.005
https://doi.org/10.12657/denbio.089.005