Selection of Elite Genotype of a Multipurpose Forest Tree (Pterocarpus marsupium Roxb.) from Naturally Grown Populations in Central India

2020 ◽  
pp. 101-119
Author(s):  
Anees Ahmad ◽  
Iram Siddique ◽  
Ankita Varshney
Keyword(s):  
Central India ◽  
Forest Tree ◽  
Pterocarpus Marsupium ◽  
Selection Of

Selection of Airfoils for Vertical Axis Wind Turbines for Low Speed, Low Altitude Regions of Central India

2017 ◽  
Vol 7 (11) ◽  
pp. 113
Author(s):  
Abhineet Singh ◽  
Sonali Mitra ◽  
S.V.H. Nagendra ◽  
Pragyan Jain
Keyword(s):  
Numerical Analysis ◽  
Central India ◽  
Vertical Axis ◽  
College Campus ◽  
Low Speed ◽  
Vertical Axis Wind Turbines ◽  
Low Altitude ◽  
Naca 0015 ◽  
Naca 0012 ◽  
Selection Of

The present paper deals with the selection of airfoil profile for VAWTs which is to be installed in the college campus, located in Central India region. Both experimental and numerical analysis he been carried out for the three selected airfoils, NACA 0012, NACA 0015 & S2027. The results show a good correlation with the existing literature. Airfoil profile S2027 has been chosen which best suits our condition. 

Selection of Forest Tree Species in Rhodesia

1976 ◽  
Vol 98 (1) ◽  
pp. 16-20
Author(s):  
R. D. Barnes ◽  
L. J. Mullin
Keyword(s):  
Tree Species ◽  
Forest Tree ◽  
Forest Tree Species ◽  
Selection Of

scholarly journals Molecular Fingerprinting for Detecting Genetic Relationships among different Accessions of Pterocarpus marsupium

2021 ◽  
Vol 25 (04) ◽  
pp. 820-830
Author(s):  
Anees Ahmad
Keyword(s):  
Genetic Diversity ◽  
Phylogenetic Relationship ◽  
Rapd Analysis ◽  
Genetic Relationships ◽  
Central India ◽  
Analysis Data ◽  
Molecular Fingerprinting ◽  
Improvement Program ◽  
Pterocarpus Marsupium ◽  
Rapd And Issr

Pterocarpus marsupium Roxb. is a valuable multipurpose forest tree in India. Generally, it is valued greatly for its excellent wood qualities. Due to its significant multipurpose properties, this tree has been overexploited, which ultimately has led to its inclusion in the list of threatened species. In this regard, studying the genetic diversity in P. marsupium is not only significant for the protection of this species, but also necessary for the development and utilization of germplasm resources for its improvement. Before developing any tree improvement program, information on actual genetic diversity and the cryptic number of the differentiated genetic resource are important aids for its conservation and effective utilization. Thus, in the present study, analysis of phylogenetic relationship among P. marsupium species plays an important role in the identification and selection of elite genotype among the wildly distributed accessions. The phylogenetic relationship among 18 genotypes obtained from various forest regions of central India was studied using DNA based molecular markers. In RAPD analysis, out of 40 scorable amplified bands, 29 were polymorphic resulting in expression of polymorphism percentage (73.2%) with an average of 2.90 amplicons per primer. Based on RAPD analysis, the lowest (37%) similarities among accessions were recorded in Anuppur (MAA), Mandla (MMK) and Jabalpur (MJH) and the highest similarity (100%) were observed among Mandla (MMK), Jablapur (MJH); Jashpur (CJM), Surguja (CSA), Bilaspur (CBP) and Durg (CDB) and Raigarh (CRK) accessions. While the ISSR analysis found 66 amplified bands, 45 were polymorphous and average 68.3 percent polymorphic with an average 4.5 bands per oligo. The lowest (36%) similarity was observed among Anuppur (MAA) and Jabalpur (MJH) accessions and the highest similarity (88%) was recorded among Jashpur (CJM), Chhindwara (MCD) and Bilaspur (CBP) accessions. The combined analysis data of RAPD and ISSR showed that Chandrapur (RCC) and Anuppur's (MAA) acessions had the lowest (35%) similarity, with Jabalpur's (MJHs) and Mandla's (MMKs) accession being the highest similarities (100%) reported. As a result, the study of genetic diversity by means of RAPD and ISSR markers alone or in combination, i.e. the MAA, CKB and CRK accessions, was found to be more diverse among 18 accessions of Central India and given greater space for the collection of elite/superior trees to be used in conservation and forest development programs. © 2021 Friends Science Publishers

scholarly journals The effect of fungicides used in the protection of forest tree seedlings on the growth of ectomycorrhizal fungi

2014 ◽  
Vol 32 (2) ◽  
pp. 315-322 ◽  
Author(s):  
Marta Aleksandrowicz-Trzcińska ◽  
Andrzej Grzywacz
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Screening Method ◽  
Forest Tree ◽  
Tree Seedlings ◽  
Laccaria Laccata ◽  
Suillus Luteus ◽  
Study Results ◽  
Forest Nurseries ◽  
Selection Of

Fungitoxical activity of ten fungictdes most commonly used in the phytopathological protection of forest nurseries was studied, using the <i>in vitro</i> screening method. The fungitoxical activity was studied against five species of ectomycorrhizal fungi (seven strains). The resulting growth inhibition of fungi species and strains tested was prcscnted in terms of fungitoxicity classes of the preparations used. The highest total fungitoxicity against the mycelia of fungi taxa tested was found for Euparen, Bravo, Dithane M-45 and Ridomil. The weakest fungitoxical effect was observed for Topsin M and Bayleton. The least susceptible for the action of the fungicides studied were mycelia of <i>Suillus luteus</i>, while the most susceptible were those of <i>Hebeloma crustuliniforme</i> and <i>Laccaria laccata</i>. The study results arę useful for the selection of fungi strains proper for the artificial mycorrhization of seedlings.

scholarly journals Implementation of Monmonier's algorithm of maximum differences for the regionalization of forest tree populations as a basis for the selection of seed sources

2010 ◽  
Vol 62 (2) ◽  
pp. 425-430 ◽  
Author(s):  
V. Ivetic ◽  
V. Isajev ◽  
N. Stavretovic ◽  
Snezana Mladenovic-Drinic
Keyword(s):  
Genetic Variability ◽  
Data Processing ◽  
Rapd Markers ◽  
Geographic Location ◽  
Forest Tree ◽  
Genetic Distances ◽  
Seed Sources ◽  
The Matrix ◽  
Reproductive Material ◽  
Selection Of

The regionalization of forest tree populations was researched on an example of beech, as the species with the largest range and the widest ecological amplitude in Serbia. The implementation of Monmonier's algorithm of maximum differences to analyze the spatial distances and the matrix of genetic distances generated by RAPD markers produced different results, depending on the method of addressing the genetic distances, so that data processing should be planned in accordance with the number of samples and their geographic location. The analysis is simple and enables a good visualization of genetic variability barriers which, in combination with the data on the distribution and the geographic barriers, can be utilized for recommending the transfer of forest tree reproductive material.

Growth–defense trade-offs shape population genetic composition in an iconic forest tree species

2021 ◽  
Vol 118 (37) ◽  
pp. e2103162118 ◽  
Author(s):  
Olivia L. Cope ◽  
Ken Keefover-Ring ◽  
Eric L. Kruger ◽  
Richard L. Lindroth
Keyword(s):  
Evolutionary Dynamics ◽  
Evolutionary Ecology ◽  
Functional Trait ◽  
Forest Tree ◽  
Ecological Interactions ◽  
Trait Variation ◽  
Trade Offs ◽  
Spatiotemporal Scales ◽  
Evolutionary Consequences ◽  
Selection Of

All organisms experience fundamental conflicts between divergent metabolic processes. In plants, a pivotal conflict occurs between allocation to growth, which accelerates resource acquisition, and to defense, which protects existing tissue against herbivory. Trade-offs between growth and defense traits are not universally observed, and a central prediction of plant evolutionary ecology is that context-dependence of these trade-offs contributes to the maintenance of intraspecific variation in defense [Züst and Agrawal, Annu. Rev. Plant Biol., 68, 513–534 (2017)]. This prediction has rarely been tested, however, and the evolutionary consequences of growth–defense trade-offs in different environments are poorly understood, especially in long-lived species [Cipollini et al., Annual Plant Reviews (Wiley, 2014), pp. 263–307]. Here we show that intraspecific trait trade-offs, even when fixed across divergent environments, interact with competition to drive natural selection of tree genotypes corresponding to their growth–defense phenotypes. Our results show that a functional trait trade-off, when coupled with environmental variation, causes real-time divergence in the genetic architecture of tree populations in an experimental setting. Specifically, competitive selection for faster growth resulted in dominance by fast-growing tree genotypes that were poorly defended against natural enemies. This outcome is a signature example of eco-evolutionary dynamics: Competitive interactions affected microevolutionary trajectories on a timescale relevant to subsequent ecological interactions [Brunner et al., Funct. Ecol. 33, 7–12 (2019)]. Eco-evolutionary drivers of tree growth and defense are thus critical to stand-level trait variation, which structures communities and ecosystems over expansive spatiotemporal scales.

Cognitive gadgets and cognitive priors

2019 ◽  
Vol 42 ◽  
Author(s):  
Gian Domenico Iannetti ◽  
Giorgio Vallortigara
Keyword(s):  
Cognitive Neuroscience ◽  
Selection Of

Abstract Some of the foundations of Heyes’ radical reasoning seem to be based on a fractional selection of available evidence. Using an ethological perspective, we argue against Heyes’ rapid dismissal of innate cognitive instincts. Heyes’ use of fMRI studies of literacy to claim that culture assembles pieces of mental technology seems an example of incorrect reverse inferences and overlap theories pervasive in cognitive neuroscience.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

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