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Thesis (Ph.D.) - University of Birmingham, Dept of Genetics.
Download Selection for environmental sensitivity and competitive ability in Nicotiana rustica.
Competitive ability and environmental sensitivity in nicotiana rustica. In the first part of this thesis the effects of natural selection on two contrasting synthetic populations, of known initial genetical composition, after successive generations of mating in isolated, competitive conditions, are investigated for a number of ?uin= This prediction has been tested by two cycles of selection initiated in the F3 of a cross between varieties 2 and 12 of Nicotiana rustica for the mean performance and environmental sensitivity of H.
Boughey, "Competitive ability and environmental sensitivity in Nicotiana rustica", Ph.D. Thesis University of Birmingham, (). Biometrical analyses of synthetic populations of Nicotiana Predicting the properties of second cycle hybrids produced by intercrossing random samples of recombinant inbred lines sensitivity and competitive ability in 2 and 42 of Nicotiana rustica Selfing variants in tristylous Eichhornia paniculata (Pontederiaceae) possess an elongated, short-level stamen adjacent to mid-level stigmas, which causes autonomous selfing.
The variants commonly spread in dimorphic, but not trimorphic populations in northeast Brazil. We investigated the effect of stamen elongation on pollen size Selection for environmental sensitivity and competitive ability in Nicotiana rustica.
book siring To account for the genotype-environmental interactions which occur between families derived from crosses between the true-breeding varieties 1 and 5 and 2 and 42 of Nicotiana rustica and the This chapter discusses the cytogenetic studies on Nicotiana.
The genus Nicotiana has been a favored material for studies on inheritance and evolution in higher plants since the days of the pre-Mendelian hybridizers. The origins and evolution of species of the genus are presented and these relationships are summarized diagrammatically in the form of three phylogenetic :// J L Jinks's research works with 5, citations and 2, reads, including: A comparison of inbred lines derived by doubled haploidy and single seed descent in spring barley (Hordeum vulgare) - "Develop some understanding with companies that, on this problem, none is going to seek a competitive advantage by inferring to its public that its product is less risky than others.
(No claims that toasting, or expert selection of tobacco, or extra length of the butt, or anything else, makes a given brand less likely to cause :// Start studying Anthropology - Tobacco: History, Culture, Science, and Policy.
Learn vocabulary, terms, and more with flashcards, games, and other study :// Selection proceeded for 1 year, or approximately generations in the light treatment and generations in the dark. The allopatric lineages (light alone or dark alone) increased their adaptation in the selection environment at the expense of their ability to grow in the opposite :// The success of a plant breeding program largely depends on the genetic composition of the base population used to select improved varieties and on the use of efficient selection procedures.
The Somatic hybridization through protoplast fusion provides the ability to combine parent genes in higher plants to overcome sexual incompatibility among plant species or genera. Protoplast fusion enables transfer of desirable qualities, for example, resistance to diseases (bacterial, fungal, viral), pests, herbicides, and other stress :// /somatic-hybridization.
Abstract. In this paper, we discuss the role of genotype by environment interactions (GEI) in crop improvement, especially the following: (1) Implications of GEI in crop improvement, (2) Nature and causes of GEI, (3) Approaches for studying GEI, and (4) Strategies for using GEI in crop :// The evolution of increased competitive ability (EICA) hypothesis is an extension of the ODH, which proposes that when plants are introduced to a new geographical area, relaxation of selective pressure from natural enemies will favour the evolution of reduced :// Conclusions.
Polyploidy can be an important factor in species invasion success through a combination of (1) ‘pre-adaptation’, whereby polyploid lineages are predisposed to conditions in the new range and, therefore, have higher survival rates and fitness in the earliest establishment phase; and (2) the possibility for subsequent adaptation due to a larger genetic diversity that may assist Joint selection for both extremes of mean performance and of sensitivity to macro-environmental variable.
III. – The determinants of sensitivity. Heredity, 40, Brumpton R.J., Boughey H., Jinks J.L., Joint selection for both extremes of mean performance and environmental sensitivity to a macro-environmental variable.
Web view. Plant cell culture technologies have made possible the production of a wide variety of pharmaceuticals such as alkaloids, terpenoids, steroids, saponins, monoterpenes, flavonoids and amino acids. The standardization of technologies for the production of plant metabolites through cell cultures helps in understanding the biology of their biosynthesis and :// ICE1 also functions in cold‐acclimatization responses and freezing tolerance, and its ability to bind to several E‐box sequences in vitro and activate transcription in transient expression assays in Arabidopsis leaves suggests that it may not require other bHLH factors for these functions (Chinnusamy et al., ).
Introduction Overview. Cytochrome P, or CYP genes, constitute one of the largest family of genes, with representatives in virtually all living organisms, from bacteria to protists, plants, fungi, and animals (Werck-Reichhart and Feyereisen, ).An ever-growing number of P sequences is available, and the role of P enzymes is being documented in an increasing number of Precise allocation of limited resources between growth and defense is critical for plant survival.
In shade-intolerant species, perception of competition signals by informational photoreceptors activates shade-avoidance responses and reduces the expression of defenses against pathogens and insects.
The main mechanism underlying defense suppression is the simultaneous downregulation of Metabolic engineering [74, 75] is a powerful tool for reconstructing cellular metabolic networks for improved production of chiral nopoulos and coworkers  successfully applied the concepts and tools of metabolic engineering in creating a recombinant Rhodococcus strain capable of completely converting indene to trans-(1R, 2R) chiral indandiol (Fig.
16), an intermediate in /metabolic-engineering. Secondary production of the hairy roots of Nicotiana rustica L.
was strictly related to the growth, whereas hairy roots of Beta vulgaris L. exhibited non-growth-related product accumulation.
In the case of the hairy roots of Scopolia japonica Jacq. and H. muticus, the secondary products only started to accumulate after growth had ceased [ 36 Archived Publications.
Applied Turfgrass Science (–) Crop Management (–) Forage & Grazinglands (–) Journal of Production Agriculture (–) Nicotiana rustica, which contains up to 18% nicotine, is thought to have been the first tobacco export from the New World.
Much more potent than Nicotiana tabacum (% to 9% nicotine), it is still smoked in Turkey and serves as a source for commercial nicotine production. tabacum is planted throughout the southeastern United States as This expression is scantily related to environmental conditions, demonstrating that the dormancy process has its own signaling.
89, During seed development, environmental factors can significantly influence on the content and sensitivity to ABA of mature seed and alter their dormancy. 86, 96, – Several mRNAs present in the dormant Autophagy-related approaches for improving nutrient use efficiency and crop yield protection Tamar Avin-Wittenberg Department of Plant and Environmental Sciences, Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Givat Ram, Jerusalem, Israel Senescence in plants shows wide range of patterns.
Some plants are subjected to death of all aboveground parts at the end of growing season (top senescence) or loss of entire leafy cover leaving the stem and roots bare for stipulated time period (deciduous senescence); and still another form is the die back of oldest leaves in the normal development of annual plants (progressive senescence).
Abstract. Drought stress is among widespread environmental problems limiting plant survival, growth, and productivity. However, plants adopt a number of strategies such as osmotic adjustment, which could help maintain water uptake, cell turgor, and functions of stomata by accumulating large quantities of :// 8 Positive Interactions Among Plants Not all plant–plant interactions are competitive.
Plants often ameliorate the environment of neighbors and increase their growth and survivorship (facilitation), particularly at the seedling stage and where the physical environment or water and nutrients strongly constrain growth (Callaway ).
Joint selection for both extremes of mean performance and of sensitivity to macroenvironmental variable. III. The determinants of sensitivity. Hered BRUMPTON, R.J., BOUGHEY, H.
and JINKS, J.L. Joint selection for both extremes of mean performance and environmental sensitivity to a macro-environmental variable.
Family Web view. The Plant Journal () 66, 94– doi: /jXx THE PLANT GENOME: AN EVOLUTIONARY VIEW ON STRUCTURE AND FUNCTION Evolutionary and comparative analysis of MYB and bHLH plant transcription factors 1 Antje Over expressing a yeast ornithine decarboxylase gene in transgenic roots of Nicotiana rustica can lead to enhanced nicotine accumulation.
Plant Mol Biol ;–  Berlin J, Ruegenhagen C, Dietze P, Fecker LF, Goddijn OJM, Hoge › 百度文库 › 互联网. A computer system monitors a conversation between an agent and a customer.
The system extracts a voice signal from the conversation and analyzes the voice signal to detect a voice characteristic of the customer. The system identifies an emotion corresponding to the voice characteristic and initiates an action based on the emotion.
The action may include communicating the emotion to an Antirrhinum majus Rosea1 (Ros1) is an MYB-related transcription factor that induces anthocyanin biosynthesis in plant tissues, and has been shown to be suitable for visual tracking of virus infection in plants.
However, activation of anthocyanin biosynthesis has far reaching effects on plant physiology and could consequently have negative effects on viral :// Environmental Entomology publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment.
(Nicotiana rustica) Comparative Impact of Artificial Selection for Fungicide Resistance on Beauveria bassiana and Metarhizium :// The genetic advantage of selection in haploid cells is also the basis of their proposed use as a bioassay system for monitoring possible mutagenic effects of herbicides (Pohlheim et al., ) or environmental pollutants (Christianson and Chiscon, ).
Transformation. Haploids ADP is a competitive inhibitor of ATP‐binding, with an apparent 50% inhibitory concentration (I ) of ∼ mM (Seddon et al., ).
The high S of the enzyme for glutamate is consistent with the fact that this metabolite is the most abundant free amino acid in bacteria (Tempest, Meers & Brown, ). Review of Tobacco Industry of Pakistan: Business Report and Academic Essay.
5 varieties of Nicotiana Rustica 7 varieties of Dark-Air Cured of emphasis on heavy promotional activities that can act as a solution to strengthen the consumer loyalty in the tough competitive cigarette market, which depends upon the availability of adequate ().
The analysis of continuous variation in a diallel cross of Nicotiana rustica varieties. The analysis of genetic environmental interactions by PrincefcoO means of diallel crosses. The effect of hormones on fruit set of tomatoes grown at relatively low temperature. (). When Nicotiana tabacum BY-2, a parent strain used for the cloning, was isolated, the titer for ubiquinone was only mg g–1 DW; therefore, the level was increased by selection until mg g–1, which corresponded to times the amount produced byVirtually all organisms respond to high-temperature conditions with the synthesis of small heat shock proteins (sHSPs).
These ubiquitous proteins have monomeric molecular masses of 15 to 42 kD, but assemble into oligomers of nine to over 30 subunits depending on the protein (Vierling, ).In plants, sHSPs are generally undetectable in vegetative tissues in the absence of stress, but are Regulation of the ethylene pathway.
The ethylene biosynthesis and signaling pathway can be presented in a linear model (Figure 1).Ethylene is essential for many processes in the plant and thus, there is a constant, low ethylene production (Figure 1a). 14 Under certain conditions, however, ethylene biosynthesis and sensitivity increase in specific tissues and this triggers the ethylene