Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"dwarfing"”.
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Are Barley Dwarfing Genes Important in Tolerance to Abiotic Stress?
DELLA proteins are a highly conserved group of growth inhibitors, mutants of which were integral to the semi-dwarf, high yielding wheat lines of the Green Revolution. In addition to reducing plant growth, the gain of function (GoF) mutants in which DELLA protein is stabilised were shown to confer …
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Heat Stress Induced Fetal Dwarfing and Uterine Blood Flow in Sheep
… feed intake would alleviate heat induced dwarfing. Birthweight adjusted for sex and litter size was reduced 1.8 kg in trial 1 (P < .05) and 1.9 kg in trials 1 and 2 combined (P < .06) with maternal heat stress. Lamb sex, litter size, lamb condition and gestation length were all correlated …
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Endogenous Phytohormones in Relation to the Dwarfing Capability of Certain Size-Controlling Apple Rootstock Clones
Made available in DSpace on 2014-12-12T00:57:22Z (GMT). No. of bitstreams: 1 7310090.pdf: 3658135 bytes, checksum: b7ec21931276aad035445abce2cd68bf (MD5) Previous issue date: 1972
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Agronomic, quality, and genetic analysis of the Rht18 semi-dwarfing gene in a Canadian Western Red Spring Wheat (Triticum aestivum L.) background
… gene. In Western Canada the two main sources of dwarfing in wheat, Rht-B1b and Rht-D1b, have negative agronomic effects, such as a reduced coleoptile length, reduced emergence, and varietal off-types. Therefore, it is favorable to investigate the introduction of Rht18 for use in Canadian …
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Response of Different Height Genotypes of Sorghum Vulgare to Gibberellic Acid and Amo-1618 and Some Phenotypic Effects of One Dwarfing Gene
Made available in DSpace on 2014-12-04T20:17:15Z (GMT). No. of bitstreams: 1 6303244.pdf: 3308132 bytes, checksum: 82789d48a245c1deb041a250b5c5a013 (MD5) Previous issue date: 1962
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Genetic dissection of sorghum height and maturity variation using sorghum converted lines and their exotic progenitors
… involves four major loci each for maturity and dwarfing. Two major maturity loci, Ma1 (PRR37) and Ma3 (phytochrome B), and a single major dwarfing locus, Dw3 (PGP1/br2), have been cloned. Sorghum conversion (SC) lines are exotic varieties that have been introgressed with early maturity and …
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Identification of quantitative trait loci and comparison of selection methods for barley yellow dwarf tolerance in spring oats and winter wheat
… evaluation of BYD. The second method, percent dwarfing, was a percentage calculated from the difference in height between the inoculated and controls hills. This method has been used in conjunction with BYD rating in wheat evaluations of BYD. The third method, percent biomass loss, was a …
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Construction and evaluation of infectious cDNA clones and analysis of packaging determinants of Soybean dwarf virus
… aphid-transmitted luteovirus that causes dwarfing of soybean plants. In the present study, infectious clones of two dwarfing isolates of SbDV were constructed, and methods for Agrobacterium-mediated inoculation of plants were standardized and used to introduce them into fava bean, …
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The genetic determinants of vigour control and precocity by pear (Pyrus communis L.) rootstocks
… important traits in commercial pear production. Dwarfing rootstocks are used to reduce the size of the scion and enable precocious flowering in many perennial cultivars. Currently there is a lack of Pyrus rootstocks that are vigour-controlling and precocity-inducing. The development of such a …
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Effect of Allelic Variation in Rht Loci on Plant Height and Grain Yield of Soft Red Winter Wheat (Triticum aestivum L.)
… (n = 98) derived from the lines ‘Neuse’ (Rht-D1 dwarfing) and ‘Bess’ (Rht-B1 dwarfing) segregating at the Rht loci, was evaluated in five total site-years in Arkansas. Analysis of variance across locations showed that allelic variation at the Rht loci significantly affected grain yield, plant …
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Evaluation of rootstock and crop load effects on the performance of `Gibson Golden Delicious' and three scab-resistant apple cultivars
… Borkh.) orchard to evaluate the effects of dwarfing rootstocks under different crop load levels on tree growth, yield, fruit quality, and return bloom. Treatments included five dwarfing rootstocks and trees that were hand thinned to crop loads ranging from 3 to 13 fruits per cm2 trunk …
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Sweeprate and Temperature Effects on Crackling Noise
… release of energy in the photosphere of the sun dwarfing that of our most horrible WMD. Typically, crackling noise is modeled in the infinitely slow driving rate limit at zero temperature. In this dissertation I investigate the effects of relaxing these limits. First I consider the crackling …
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Genes and environment in language acquisition : a study of early vocabulary and syntactic development in twins
… were also prominent in vocabulary development, dwarfing effects of heritability. The development of first word combinations and of first over regularizations of the past tense rule "add -ed'' (e.g., goed for went) were also studied by parent report to examine the contributions of heredity and …
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Genetics, behavior, and disease resistance in chickens
… situation. The effect of the sex-linked gene for dwarfing on the frequency of head shaking, antibody titers to sheep red blood cells, and plasma corticosterone levels was influenced by the genetic background of the population studied. Line differences were observed for the degree of mortality, …
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Constraining the representation of aerosols in GCMs: explainable AI and Lagrangian approaches to identify key drivers of the natural aerosol lifecycle.
… conditions, with the difference in the baseline dwarfing the impact of the eruption. To improve understanding of the processes governing aerosol properties in environments dominated by natural aerosol sources, an explainable artificial intelligence framework utilising airmass history was …
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Constraining the representation of aerosols in GCMs: explainable AI and Lagrangian approaches to identify key drivers of the natural aerosol lifecycle.
… conditions, with the difference in the baseline dwarfing the impact of the eruption. To improve understanding of the processes governing aerosol properties in environments dominated by natural aerosol sources, an explainable artificial intelligence framework utilising airmass history was …
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Genetic analysis of the Group IV Rht LOCI in wheat.
… introgressed into wheat varieties along with the dwarfing alleles. To investigate the contiguous region around Rht, a hexaploid wheat („Chinese Spring‟ (CS)) BAC library was screened using a PCR-based technique (Febrer et al. 2009). This identified several Rht-containing BAC clones, three of which …
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Investigations into the molecular interactions between Claviceps purpurea, the causal agent of ergot, and cereal hosts
… to co-locate with the wheat Reduced height (Rht) dwarfing gene alleles Rht-B1b and Rht-D1b. The wheat Rht loci encode DELLA proteins, Rht-B1b and Rht-D1b representing GA-insensitive mutations in DELLA. A linkage between Rht-B1b and Rht-D1b and ergot resistance could therefore indicate a role of GA …
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IDENTIFICATION AND CHARACTERIZATION OF GENETIC LOCI FOR CULM MORPHOLOGY TRAITS IN BARLEY (HORDEUM VULGARE L.)
… SI and IWt were detected in the vicinity of semi-dwarfing gene Sdw1/Denso. In particular, association of CG_qtnPH_3H_1 with PH, IWt and TH is consistent with the major role of Sdw1/Denso gene in controlling culm length and its pleiotropic effects on culm features and flowering. Finally, we …
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A physiological basis to crop improvement and agronomic development
… Amax and Kh; and SLA decreased with the level of dwarfing; and the Amax related both Kh and SLA. Therefore, it was proposed that the straw-shortening may affects Amax by exerting a controlling influence over Kh through SLA. Moreover, both the partitioning of N to spike and the flag leaf N were …