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Vegetative propagation

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Mô thực vật Văn hóa Phần 3 - Vi nhân

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the asexual or vegetative propagation (multiplication) of plants in vitro. Basic in vitro propagation. Selection of plant material 2. Establish aseptic culture 3. in vitro micro-grafting. Establish aseptic culture. Selection of plant material. Part of plant. Physiological state - of stock plant. Stock plant preparation. Organic ‘growth factors’. Growth regulators. Role of growth regulators. survival of the new plant when removed from the in vitro environment

Fruit growing in the tropics - Part 4

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In vegetative propagation a part of the mother tree other than the seed, (e.g. The genetic make-up of this new plant is exactly the same as that of the mother tree. Consequently all cuttings from one mother tree are identical. The mother tree, together with the cuttings, is called a CLONE. If cuttings are taken from a mature tree, the new plant, however small, is mature and may flower even in the nursery.. More trees per ha means further increases in the early crops!

Transcriptomes analysis reveals novel insight into the molecular mechanisms of somatic embryogenesis in Hevea brasiliensis

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Background: Somatic embryogenesis (SE) is a promising technology for plant vegetative propagation, which has an important role in tree breeding. Full list of author information is available at the end of the article. Somatic embryogenesis (SE) is a promising and rapid vegetative propagation technique for plant regeneration.. reported that 11 AP2/ERF genes might act as expression markers linked to the different stages of the somatic embryogenesis process in rubber tree [14].

Morphogenesis of immature female inflorescences of date palm in vitro

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For some years the vegetative propagation of date palm by in vitro culture has been the subject of numerous studies using techniques such as somatic embryogenesis and organogenesis (Sharma et al., 1986. Bouguedoura et al., 1990. El Hadrami et al., 1995). Use of inflorescences as starting material has been rarely described by Drira and.

Effect of paleopolyploidy and allopolyploidy on gene expression in banana

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The remaining SNPs were, therefore, assumed to be composed of variants specific to one of the two ‘Cachaco’ B subgenomes and of muta- tions accumulated during the vegetative propagation in one of the three subgenomes. Finally, the 3/3 peak lost about 60% of the SNPs, mostly corresponding to the A reference sequence specific SNPs..

Diversity assessment of the lebanese germplasm of pomegranate (Punica granatum L.) by morphological and chemical traits

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This is certainly due to the vegetative propagation of this crop by woody cuttings long time practiced at the country level unlike the other fruit crops where seed propagation was often used and generated diversity (Chalak et al., 2015). This result is in line with the findings of Hasnaoui et al. Hasnaoui et al., 2011)..

Improvement of biomass production in transgenic Melia azedarach L. plants by the expression of a GA20-oxidase gene

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We confirmed the presence of the transgenes after each vegetative propagation cycle using PCR with specific primers (GA20ox-F/R) (Figure 2B). Detection of the copy number of AtGA20ox in transgenic lines using Southern blotting.

Genetic Diversity, Phylogeography and Population gene flow of Tunisian Pistacia vera L.

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Practically, in cultivated Tunisian pistachio, seeds are rarely exchanged among growing regions, for the reason of the large use of vegetative propagation (Maggs, 1973). The Mountain chain ‘Orbata’ (a national park of 5700 ha and 1165 m) is located in the east of the Gafsa city, between El-Guetar and Gafsa farms. vera, natural pollination is most likely exclusively anemophilic, honey bees play no role in pollination due to the absence of nectar in female flowers (Zuang et al., 1988).

Transcriptome-IPMS analysis reveals a tissue-dependent miR156/SPL13 regulatory mechanism in alfalfa drought tolerance

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Drought stress was imposed on alfalfa plants devoid of water for 2 weeks at 30 days post vegetative propagation (juvenile vegetative stage) during which time plants were kept in a completely randomized design. Using the ‘featureCounts’ [33], the exon read counts were obtained from ‘.bam’ extension files of RNA sequenced samples followed by Principal Component Analysis in R-software..

Summary of doctoral thesis: Study on growth characteristics, wood properties and sterility of triploid acacias providing scientific bases for breeding and afforestation

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(iii) The vegetative propagation process for promising triploid acacia lines has been completed. (iv) A number of triploid acacia clones have been created and clonal tests have been carried out in a number of ecological regions. Initially, a number of triploid acacia hybrids have been selected with good prospects.. Most of the studies have just stopped at detecting and describing morphological characteristics.

The genomic diversification of grapevine clones

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The purpose of this study was to better understand the nature of the somatic variations that exist among grapevine clones grown exclusively under a regime of vegetative propagation. This is likely because of the high levels of transposition-inhibiting methylation and associ- ated transition mutations that are prevalent there. Third, somatic mutations were relatively scarce in the coding regions of. Vondras et al.

Molecular identification and evolutionary relationships between the subspecies of Musa by DNA barcodes

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Cultivated bananas are found to differ markedly from their wild relatives due to multiplication through vegetative propagation, exhibiting a high level of morphological diversification [7]. Accordingly, later formulated classification schemes were found to be unambiguous and coherent and were accepted widely..

02 Radio Propagation - vi.pdf

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XÁC THẤP 80 Lan truyền mặt đất (Land Propagation. Nó trở thành một kênh lan truyền đa tuyến cósuy hao tự nhiên • Tín hiệu (signal) đến đích theo nhiều đường đi do các hiệu ứng/cơ chế lan truyền trên đườngtruyền, vd như phản xạ, nhiễu xạ, tán xạ. 81 Lan truyền mặt đất (Land Propagation.

Radio Propagation

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Radio propagation: path loss. path loss = 10 log (4 π r2/ λ ) r ≤ 8m log ( r3.3 /8) r >. path loss in 2.4 Ghz band. 22.5 Km. 12.2 Km. 25.9 Km. Dec ‘02 17.3 Km. 17.3 Km. Long range path loss Small scale fading. Coherence time. RMS Delay Spread ( σ τ. RMS Delay Spread: Typical values. Time domain view. B c σ τ delay spread. domain view. RMS delay spread and coherence b/w. RMS delay spread and coherence b/w (B c ) are. RMS delay spread ( σ τ ) Coherence b/w (B c. Coherence Time.

The Mobile Radio Propagation Channel P1

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Because of the attractive propagation characteristics of VHF and UHF, it is possible to allocate the same channel to di€erent users in areas separated by distances of 50±100 km with a substantial degree of con®dence that, except under anomalous propagation conditions, they will not interfere with each other..

Influence maximization algorithm based on Gaussian propagation model

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Influence propagation model. The Gaussian propagation model calculates the influence concentration in the propagation space to simulate the influence propagation process. The precision of the influence maximization algorithm based on the Gaussian propagation model can be proved theoretically to ensure the efficiency of the algorithm.. Gaussian propagation model of social networks.

The Mobile Radio Propagation Channel P2

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Finally, we note that the maximum useful power that can be delivered to the terminals of a matched receiver is. in practical situations there are almost always obstructions in or near the propagation path or surfaces from which the radio waves can be re¯ected.A very simple case, but one of practical interest, is the propagation between two elevated antennas within line-of-sight of each other, above the surface of the Earth.We will consider two cases, ®rstly propagation over a spherical re¯ecting

Evaluation of crack propagation phenomenon in bituminous mix

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Evaluation Of Crack Propagation Phenomenon In Bituminous Mix. Abstract: Crack propagation was experimentally simulated using semicircular specimen with a crack initiated on one side. The work shows that the rate of crack propagation can be described by a power relationship between the stiffness of the mixture and the number of cycles to failure, which is mixture and binder dependent..

Extended iso geometry analysis of crack propagation

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Extended iso geometry analysis of crack propagation. The purpose of this paper is simulating the crack propagation in steel structures with isogeometry analysis (IGA). Crack propagation in isotroptic linear elastic material will be presented.. The numerical example is a rectangular plate assumed to be plane strain condition with an edge crack under uniform shear loading. It is showed that isogometry analysis is better than standard finite element method in modeling and simulating.

Wedge Mode Propagation Characteristics of Triangular–shaped Surface Plasmon Waveguide

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However, the propagation properties in this case are slightly different (Figs.4 (d)-(f. For comparison, the propagation mode characteristics of the silicon waveguide without filleting the top wedge corner are also shown in Figs. The propagation length is no longer a minimum value at 20nm and reaches a maximum value at. Electromagnetic field of WPP mode distributes on the wedge of waveguide at different heights in two cases t = 60nm (a)-(c) and 200nm (d)-(f).. the thickness of 60nm.