recent advances in the science and practice of tropical rainforest restoration
white - forest genetics (cabi, 2007)
... Motivate the need for or importance of the principle; (2) Describe the underlying concepts and their applications using a combination of text, equations and figures; (3) Reinforce the principle and ... elucidate the complex interactions of genes and the environment during the ontogenetic development of trees In the future, molecular approaches for measuring, understanding, managing and manipulating ... (Fig 2.11) The function of the TATA box is to identify the location of the start of transcription by facilitating the denaturation of the double helix The CCAAT box is involved in the initial recognition...
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Báo cáo khoa học: "Intra- and interpopulational genetic variation in juvenile populations of Quercus robur L and Quercus petraea Lieb" pot
... pooled remainder (the angles of the correspond more to the sec- sample size) The approach the center, the more representative of the remainder is the genetic information of this sample, and is equivalent ... organisms The objective of the present study was génétique / Samples in the description of the genetic variation in oak populations and thus in the characterization of the natural variability of forest ... quantifies the potential for creating genetic variation in the next generation and is therefore an important determinant of the adaptability of forest tree populations In most cases, the single locus...
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báo cáo khoa học: "The analysis of quantitative variation in natural populations with isofemale strains" pptx
... surface Wing length was taken from the intersection of the anterior cross vein and longitudinal vein (L3) to the intersection of L3 with the distal wing margin Wing width was taken as the distance ... strains using the inbreeding coefficient F (FALCONER, 1981, p 241) i.e., Isofemale strains expanded to an infinite population size have an inbreeding coefficient of 1/4 due to sib-mating during the ... of variance (ANOVA), the between-line component of variance contains a quarter of the additive genetic variance and a quarter of the dominance variance, and the within strain component contains...
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báo cáo khoa học: "Allozyme variation in natural populations of Lymantria dispar (Lepidoptera)" docx
... Morocco on the right, China in the middle of the plan, the French and Canadian populations being close together on the left In three populations (Angoul8me, Poitiers and Canada) the eggs collected ... Islands On the other hand, there may be species, in which case a genetic cline would not be predicted The two forms should occurred in Spain with perhaps a zone of sympatry and the occurrence of ... occur and the observed differences in larvae correspond to differences in populations of their parents Since the female of Lymantria dispar does not fly and the larvae very often feed on the same...
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Báo cáo lâm nghiệp: "Variation of morphological traits in natural populations of maritime pine (Pinus pinaster Ait.) in Morocco" pot
... population of TAD In contrast, seeds and cones were largest in the high Rif and smaller in the low lands Precipitation in the high-altitude Rif is two-fold the precipitation in the lowlands In fact, ... main objective of the present work is the analysis of the variation in morphological traits within and among Moroccan maritime pine populations In addition, we are interested in the comparison ... Burban and Petit [13], based on mtDNA and RFLP analysis, have identified three maternal lineages in maritime pine, one of the lineages being specific of Morocco (i.e., the Moroccan lineage) The...
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báo cáo khoa học: " Variation at four enzyme loci in natural populations Drosophila melanogaster : factor analyses of genotypic and gametic associations Angeles ALONSO-MORAGA" pdf
... negative one, and all the points involving a-Gpdh For s z lAdh F Est-6/-, the gametes carrying the Est-6allele and the Est-6 and Est-6 s la-Gpdh F gametes are in the positive direction of the first ... correlates with the sequence of intensity of the directional pressures for such loci The influence of the 2nd factor increases from figure to figure 5, showing in figure an equal distribution of the gametes ... directional trends in the locations of Aldox lF or ls Alox gametes IV Discussion The directional phenomena, acting on half of the genome in one direction, and on the other half in the opposite direction,...
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Báo cáo sinh học: " Phenotypic and genetic variability of morphometrical traits in natural populations of Drosophila melanogaster and D simulans. I. Geographic variations" docx
... Indies, the Society Islands and Hawaii ; and populations in tropical Africa, the Seychelles and the Mascarene islands Between these main groups, we find populations living in regions with intermediate ... Mediterranean; Tropical Africa; the Seychelles and the Mascarene Islands; Southern Africa; North America (northern USA and Canada); West Indies; southern USA and Mexico; the Society Islands and Hawaii; the ... from n initial lines, n/2 new lines were produced and 10 individuals per line were measured In some cases, the new lines were generated and studied after the initial lines had been kept in the laboratory...
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Báo cáo sinh học: " Phenotypic and genetic variability of morphometrical traits in natural populations of Drosophila melanogaster and D simulans. II. Within-population variability" pptx
... of each population were transformed according to the following formula: % where is the value of individual k, for the variate jin the populationi and where Ln V is the mean of the logarithm of ... Another method proposed by Brotherstone and Hill or the 21 sympatric 21 (1986), based on the comparison between the observed and the theoretical distributions of the standard deviations or of the ... geographical variability of the mean values of the traits, and also of the total phenotypic variance DISCUSSION AND CONCLUSIONS Our analysis of the within-population variability of the sibling species shows...
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Báo cáo sinh học: "Estimation of relatedness in natural populations using highly polymorphic genetic" docx
... where na and n are the number of bands of individuals a and b, and n the number ab b of bands shared by a and b This expression, which corresponds to the proportion of bands shared between individuals, ... composed of the offspring (a total of 16 individuals) of the couples in the second generation In this genealogy, kinds or relationship exist and their relative proportions are given in table II Finally, ... number of bands varies from one individual to another; 2), there are homozygous loci and pairs of allelic bands in the fingerprint of an individual; 3), unrelated individuals may share similar bands...
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ANALYSIS OF GENETIC VARIATION IN ANIMALS pdf
... with inbreeding coefficients in both populations and interpopulations 30 Analysis of Genetic Variation in Animals The inbreeding coefficient of the whole population (FIT = Factor of Inbreeding in ... analysis is done by individual genetic profiling (genetic fingerprinting), determining the interrelations between different individuals and evaluating their allele frequency in populations Microsatellite ... During recent years, the issue of conserving the biodiversity as a component of the conservation of the environment has been raised at an international level In this respect, one of the main...
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Báo cáo lâm nghiệp: "Enzymatic polymorphism in natural populations of the sawfly Diprion pini L (Hymenoptera: Diprionidae) L Beaudoin" ppsx
... 1956) and as the offspring of D pini live grouped in colonies during larval devel- opment, the data analysed are the parental genotypes obtained from their offsprings A sample of 129 D pini colonies ... results not exclude the hypothesis of the existence of adult migrations speading the outbreak and of population exchanges between mountains and lowlands For the three populations of central France, ... plain and mountain conditions, respectively (Géri, 1988; Géri and Goussard, 1988, 1991; Beaudoin et al, 1992) However, this situation is not exclusive of a strengthening of the plain and mountain...
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Báo cáo khoa học: "Gene diversity in natural populations of oak species" doc
... Preferential pollination between the pollen of the receptive species and the ovule of the hybrids is a prerequisite to the final inclusion of the chloroplast genome of the donor species into the receptive ... studies When comparing the same species in the different studies, the levels of gene diversity were always lower in the study of Manos and Fairbrothers, indicating the use of different electrophoretic ... than 37% of the total diversity Interestingly, values obtained for the red oaks were of the same magnitude in the different studies, despite the important differences found for A A and , c ec...
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Báo cáo khoa học: " Estimation of Fagus sylvatica L mating system parameters in natural populations" pps
... frequencies (p) using the maximum likelihood approach of Ritland and Jain (1981) and Ritland and El Kassaby (1985) The assumptions used were those of the mixed mating model (Fyfe and Bailey, 1951): ... amount of the effective selfing caused by consanguineous matings is directly estimated from the slope of the regression line of outcrossing-pollen gene frequencies on the additive value of the maternal ... At last, the beginning and the length of the flowering period vary according to annual climatic conditions This can induce interannual variations of phenological gaps and class overlaps These variations...
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Báo cáo khoa học: "Genetic variation in European larch (Larix decidua Mill)" potx
... within and among populations, respectively G the proportion of ST is interpopulation gene diversity H T mean frequency of the RESULTS Details of gel and electrophoresis buffer and staining mixtures ... variants The same allele pre- vails at every locus in all populations with the exception of the G6PDH The frequency of the G6PDH-1 allele exceeds that of G6PDH-2 at the provenances Pfitsch and Vintschgau, ... clone of both European and Japanese larch (Bergmann and Ruetz, 1987) The finding of four MDH loci in many other conifers (Wheeler et al, 1983; Cheliak and Pitel, 1985; Yeh et al, 1985; Fins and...
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Báo cáo khoa hoc:" Genetic variation in two conserved local Romanian pig breeds using type 1 DNA markers" pdf
... [38,42] The inactivation of the MC4R gene in the mouse has resulted in a maturity onset obesity syndrome, demonstrating the role of this gene in regulation of the energy balance [13] In pigs, the ... Chinese breeds where allele C is fixed in the Meishan and Fengjing [7] In the case of the RsaI site the highest frequencies for allele E (above 0.70) were found in the Duroc, Hampshire and Landrace ... crosses retained the “superior” Genetic variation in local Romanian pigs 419 traits from both breeds and formed the basis of the new breed Their manner of breeding following the initial crossing is...
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Báo cáo sinh học: "Genetic variability in French populations of the Corsican mouflon (Ovis ammon musimon): analysis of 2 blood proteins and red-cell blood groups" pptx
... 1985) In France, introductions took place in the years 1950-1965 and wild-living populations are now present in the mountains of the Alps, the Pyr6n6es, the C6vennes and the Massif Central The ... hemoglobin The aim of this study was to determine the effects of founder events variability of introduced mouflon populations Genetic variation and discussed in relation to the history of the introductions ... classification of the coordinates of individuals was performed (1985) Major from the axes were retained to produce a dendogram tested by a contingency table analysis (populations x and the randomness of the...
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Báo cáo sinh học: "On the relevance of three genetic models for the description of genetic variance in small populations undergoing selection" docx
... takes account of the reduction in selection intensity as compared with the theory, of the relationships between mates and inbreeding induced in the offspring and of the changing variance of gene effects ... parameters they use And the increasing knowledge on QTLs implied in the genetic determinism of selected traits will provide elements for such a modelling In the second part, the hypothesis of an infinite ... was of course expected and it illustrates the strong influence of the infinitesimal hypothesis on the predictions However, the infinitesimal model remains quite robust so long as the number of...
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Population genetic variation in gene expression is associated with phenotypic variation in Saccharomyces cerevisiae pdf
... at twofold or higher levels in the presence of copper sulfate and one, ZRT1, encoding a high-affinity zinc transporter, was expressed at half the level in the presence of copper sulfate Of these ... variation in the number of tandem copies of the CUP1 locus [19,20] and could be due to use of copper sulfate in vineyards as a fungicide against powdery mildew since the 1880s [18] We have found an incomplete ... is the average ratio across all strains, Vi is the effect of strain i on the transcript ratio, ViMj is the interaction between the ratio of transcripts in strain i and medium treatment j (either...
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báo cáo khoa học: "Population crash, population flush and genetic variability in cage populations of Drosophila melanogaster" pot
... fraction of the total genetic variation of the parental popuIt has slow lation » S ’ AYR M theory of the founder’s principle and of the ensuing genetic revolution thus admits that the few original ... number of founders the breaks in the gene pool may be significant enough to result in a drastic reconditioning of the gene pool of the new colony resulting in a genetic revolution More or less in the ... in the Bonlez strain than in the Oregon strain; this, most proreflects the past history of these two strains, Oregon having been adapted for fifteen years at a constant temperature of 25 °C and...
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Báo cáo khoa hoc:" Genetic variation in the myeloperoxidase gene and cognitive impairment in Multiple Sclerosis" pot
... role of MPO polymorphism in the development of cognitive decline in MS This study was mainly designed to investigate whether some clinical and individual variables and the occurrence of the -463 ... Ratios and CI were estimated using logistic regression adjusted for age and sex gene being involved in AD pathology, possibly through oxidation of Aβ or ApoE, promoting their aggregation into insoluble ... analysed the results FC performed the statistical analysis RN, ML, AC, VA, DP and RC partecipated to acquisition of data AQ conceived the study and partecipated in its design and coordination and...
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Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 nội dung cụ thể cho từng kĩ năng ở từng cấp độ phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25