Results 1 to 10 of about 1,387,634 (300)

Evaluation of silver fir provenances at 51 years of age in provenance trials in the Předhoří Hrubý Jeseník and Nízký Jeseník Mts. regions, Czech Republic

Journal of Forest Science, 2023
In 2021, measurements were done at two international provenance research trials for silver fir originating from the same series of experiments. The investigation was carried out in the location Vítkov and Úsov, where both trials were established ...
Martin Fulín, Jaroslav Dostál, Jiří Čáp, Petr Novotný   +3 more
doaj   +1 more source

Axiomatic opportunities and obstacles for inferring a species tree from gene trees [PDF]

, 2014
The reconstruction of a central tendency `species tree' from a large number of conflicting gene trees is a central problem in systematic biology. Moreover, it becomes particularly problematic when taxon coverage is patchy, so that not all taxa are ...
Steel, Mike, Velasco, Joel D.
core   +2 more sources

Evaluation of lodgepole pine (Pinus contorta Dougl. ex Loudon) on a provenance plot situated in a formerly air-polluted area of the Krušné hory Mts. at the age of 34 years

Journal of Forest Science, 2018
The article evaluates 27 provenances of three subspecies of lodgepole pine on the Kovářská research plot (Krušné hory Mts.). The plot is part of a series of three established plots in various stand conditions.
Jiří ČÁP, Petr NOVOTNÝ, Martin FULÍN, Jaroslav DOSTÁL, František BERAN   +4 more
doaj   +1 more source

Spatiotemporal distribution patterns of soil nematodes along an altitudinal gradient in the cold temperate zone of China

Global Ecology and Conservation, 2023
As important components of the cosmopolitan soil biota, soil nematodes are found at multiple trophic levels of the belowground food web and play an important role in soil function.
Fangyuan Shen, Chen Chen, Yan Zhang, Li Ji, Huifeng Liu, Lixue Yang   +5 more
doaj   +1 more source

Third-generation sequencing and metabolome analysis reveal candidate genes and metabolites with altered levels in albino jackfruit seedlings

BMC Genomics, 2021
Background Most plants rely on photosynthesis; therefore, albinism in plants with leaves that are white instead of green causes slow growth, dwarfing, and even death.
Xiangxu Meng, Jiahong Xu, Maoning Zhang, Ruyue Du, Wenxiu Zhao, Qing Zeng, Zhihua Tu, Jinhui Chen, Beibei Chen   +8 more
doaj   +1 more source

A polynomial time algorithm for calculating the probability of a ranked gene tree given a species tree [PDF]

, 2012
In this paper, we provide a polynomial time algorithm to calculate the probability of a {\it ranked} gene tree topology for a given species tree, where a ranked tree topology is a tree topology with the internal vertices being ordered. The probability of
Degnan, James H., Stadler, Tanja
core   +2 more sources

Comparison of growth development of micropropagated and generatively reproduced wild cherry (Prunus avium (L.) L.) on the Polná demonstration plot (Czech Republic) up to the age of 15 years

Journal of Forest Science, 2016
Four clonal progenies of wild cherry obtained using an in vitro technique and control progeny of generative origin were tested on the Polná research plot in southeastern Bohemia. Growth characteristics of cherry trees were determined each year during the
J. Dostál, P. Novotný, J. Čáp
doaj   +1 more source

The role played by exotic plants in urban ecosystems: comments on Spennemann, 2019 [PDF]

, 2020
The article written by Dirk HR Spennemann, and published in the European Journal of Ecology, addresses the role played by a palm tree species native to the Canary Islands as food source for several frugivore species found in Australian cities.
Angeoletto, Fabio, Bernardo Leite, Leandro, Maria Johann, Juciane, Ortêncio Negri, Isabela Carolina, Prestes Nogueira Duarte, Taíse Ernestina   +4 more
core   +2 more sources

Third-generation sequencing found LncRNA associated with heat shock protein response to heat stress in Populus qiongdaoensis seedlings

BMC Genomics, 2020
Background As air temperatures increase globally, more and more plants are exposed to heat-stress conditions. Although many studies have explored regulation networks in plants with the aim of improving their heat-stress tolerance, only few have revealed ...
Jiahong Xu, Yao Zheng, Shouqin Pu, Xiujie Zhang, Zhihao Li, Jinhui Chen   +5 more
doaj   +1 more source

Selection of native trees for intercropping with coffee in the Atlantic Rainforest biome [PDF]

, 2010
A challenge in establishing agroforestry systems is ensuring that farmers are interested in the tree species, and are aware of how to adequately manage these species.
Bonfim, V.R., Cardoso, I.M., Carvalho, A.F., Fernandes, J.M., Garcia, F.C.P., Mendonca, E.S., Santos, A.C., Souza, H.N., de   +7 more
core   +1 more source