Results 1 to 10 of about 598,821 (278)

Multispectral drone imagery dataset for plus and non-plus Neltuma pallida trees in northern Peru [PDF]

open access: yesData in Brief
Neltuma pallida (“Algarrobo”) is an endangered species native to seasonally dry forests. Preserving this species necessitates creating spatially explicit records of specimens with superior phenological traits, commonly referred to as “plus” trees, which ...
Wilson Castro   +5 more
doaj   +3 more sources

Criteria for selecting plus trees for protective forestry

open access: yesНовые технологии, 2023
Protective forest strips are the basis of the environmental frame on sparsely wooded areas. To create such highly productive objects, the selection of the corresponding gene pool is required. Plus trees the representatives of this gene pool.
Yu. I. Sukhorukikh   +3 more
doaj   +2 more sources

TreeSnatcher plus: capturing phylogenetic trees from images [PDF]

open access: yesBMC Bioinformatics, 2012
Background Figures of phylogenetic trees are widely used to illustrate the result of evolutionary analyses. However, one cannot easily extract a machine-readable representation from such images.
Laubach Thomas   +2 more
doaj   +3 more sources

Variability of Scots pine (Pinus sylvestris L.) plus trees in the Middle and Upper Volga Region with the use of ISSR markers [PDF]

open access: yesВавиловский журнал генетики и селекции
One of the serious issues in forest breeding is how to reduce the variability level in breeding populations of forest tree species that is a set of selected plus trees.
O. V. Sheikina, E. M. Romanov
doaj   +2 more sources

Pinus pinaster Oleoresin in Plus Trees

open access: yesHolzforschung, 2002
Summary The present paper establishes the relationship between certain components of oleoresin and the character of a tree as high producer (plus tree). The composition of the oleoresin (monoterpenes, sesquiterpenes, neutral diterpenes and resin acids) of Pinus pinaster in plus trees was studied by gaschromatography/mass spectrometry.
Brígida Fernández de Simón
exaly   +3 more sources

Climate Response and Radial Growth Dynamics of Pedunculate Oak (Quercus robur L.) Plus Trees and Their Half-Sib Progeny in Periods of Severe Droughts in the Forest-Steppe Zone of Eastern Europe [PDF]

open access: yesPlants
The dendrochronological parameters of 97 pedunculate oak (Quercus robur L.) trees including 20 plus trees (142-year-old on average) and four half-sib families for four of them were analyzed considering also specifically years of the most severe droughts ...
Daria A. Litovchenko   +3 more
doaj   +2 more sources

Differentiation of Plus Trees of Scots Pine by Xylem Conditions

open access: yesЛесной журнал, 2023
An essential stage in the establishment of seed orchards is the formation of an optimal composition, avoiding inbreeding depression in the produced seed material, which develops as a result of crossbreeding between closely related plus trees.
Nataliya N. Besschetnova   +3 more
doaj   +2 more sources

Trees with Distinguishing Index Equal Distinguishing Number Plus One

open access: yesDiscussiones Mathematicae Graph Theory, 2020
The distinguishing number (index) D(G) (D′ (G)) of a graph G is the least integer d such that G has an vertex (edge) labeling with d labels that is preserved only by the trivial automorphism.
Alikhani Saeid   +3 more
doaj   +4 more sources

Molecular characterization of Spanish Prunus avium plus trees

open access: yesForest Systems, 2014
Aim of the study: The Breeding Program of wild cherry (Prunus avium) developed by Lourizán Forest Research Center (NW Spain), aims for the creation of the Main Breeding Population, that is formed by a large number of plus trees and for obtaining an Elite
Javier Fernandez-Cruz   +4 more
doaj   +4 more sources

Variability and plus tree selection in Swietenia macrophylla from Kerala, South India

open access: yesElectronic Journal of Plant Breeding, 2021
Big leaf mahogany (Swietenia macrophylla, King) is a valuable Neotropic timber species. It is the first extensively traded timber species to be listed in Appendix II of the CITES in 2002.
Aleena Thomas Moor1 , A.V. Santhoshkumar1*, T. K. Hrideek2 , E.V. Anoop1 and Manju Elizabeth1
doaj   +3 more sources

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