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Showing 1 to 20 of 120 for “"Sterility"”.
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Female sterility and carpel development in plants
Angiosperms, or flowering plants, form the largest group of plants, with more than 350,000 extant species. They exhibit extensive diversity in shape, size, color, structure and organization of their reproductive organs contained within the flowers. With regard to the sexual nature of the flowers, …
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Mouse hybrid sterility genes linked to chromosome X
… reproductive isolation mechanism is the Hybrid Sterility (HS). Hybrids between Mus musculus domesticus (Mmd) and Mus musculus musculus (Mmm) create a narrow hybrid zone across central Europe. The PWD wild-derived inbred strain (representing Mmm) and the B6 laboratory inbred strain (representing …
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Sterility and immunogenicity of gamma-irradiated respiratory viruses
… various methods of mathematical modelling and sterility testing are employed to ensure the safety of a given preparation. However, these methods are designed for materials with a low bioburden, such as food and pharmaceuticals. Consequently, current methods may not be reliable or applicable to …
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Determination of the Leak Size Critical to Package Sterility Maintenance
… leak size and their effect on loss of package sterility; and the relationships between microorganism characterisitics and the threshold leak size, and their effect on the critical leak size. Section II. The mechanism by which a package defect converts to a leaker in an effort to develop a …
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Genetic and Physiological Bases of Heat-Induced Floret Sterility in Wheat
… (Chapter 3) to identify heat-induced floret sterility tolerance. Both heat stressed hexaploid wheat and durum genotypes showed variability for several studied traits, including floret fertility components. The result from this experiment indicating the possibility for further genetic …
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Mutation of the S Cytoplasmic Element for Male Sterility in Maize
Made available in DSpace on 2014-12-10T17:47:19Z (GMT). No. of bitstreams: 1 7013488.pdf: 3628159 bytes, checksum: f3f4778d40ac3f683664d7ab07097654 (MD5) Previous issue date: 1969
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Protoplast fusion for intraspecific transfer of cytoplasmic male sterility in perennial ryegrass
Contains fulltext : mmubn000001_130152498.pdf (Publisher’s version ) (Open Access)
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Cytological and Biochemical Studies of Male Sterility in Two Species of Drosophila
… blotting to determine the biochemical basis for sterility. One protein, KRP60, was consistently reduced in sterile males. This protein may play a role in the normal function of the sperm in early development.
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Tissue Engineering a Blood Vessel Mimic While Monitoring Contamination Through Sterility Assurance Testing
… Mimic While Monitoring Contamination Through Sterility Assurance Testing</em></p> <p>Navid Djassemi</p> <p>Tissue engineering blood vessel mimics has been proposed as a method to analyze the endothelial cell response to intravascular devices that are used in today’s clinical settings for the …
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Cytogenetic studies involving a nuclear male-sterility mutant in wheat / M. Azhar Hossain
Typescript (photocopy)
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RNA interference of worker sterility genes: Testing mechanisms of reproductive regulation in Apis mellifera
Social insects such as the honey bee (Apis mellifera) are well known for their reproductive division of labour and eusocial colony systems. Honey bee workers forgo reproduction in favour of being selfless in directing reproductive benefits towards their queen mother. This altruistic tendency is a …
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Studies on pollinations and male-sterility in reciprocals of a double-cross corn hybrid
Call number: LD2668 .T4 1948 V35
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Studies on pollinations and male-sterility in reciprocals of a double-cross corn hybrid
Call number: LD2668 .T4 1948 V35
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Genetic Engineering of Black Cherry (Prunus serotina) for Reproductive Sterility and Insect Pest Resistance
… develop transgenic black cherry for reproductive sterility and insect pest resistance.</p> <p>To achieve this, a TERMINAL FLOWER 1 homolog from black cherry was isolated and characterized as one of the strategies for gene containment. The PsTFL1 cDNA contained a 519 bp coding region encoding a …
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Correlations Between Electron Microscopic and Classical Analytic Observations of Three Strains of Temperature-Sensitive Male Sterility Mutants of <em>Drosophila melanogaster</em>.
Spermatogenesis is a specialized case of cytodifferentiation involving the assembly of cellular components into haploid gametes. It is directed, presumably, by the sequential activation and repression of genes.
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Somaclonal Variation in Soybeans
… a simple recessive Mendelian inheritance) and sterility (single recessive gene trait) were seen in three or more generations of the same family. Wrinkled leaf phenotype was associated with partial sterility and may be unstable since some plants showed sectors of the normal branches on a …
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Experimental Production and Performance of Hybrid Soybean Varieties
… plants. Since the discovery of genetic male sterility in soybeans, no studies have been published on hybrid soybeans which have used male sterility to produce the hybrid seed.
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An ultrasound probe sheathing device : design, development, and evaluation
… interventional ultrasound-guided procedures, sterility is maintained by covering the ultrasound transducer head and cord with a sterile sheath. The current sheathing technique is cumbersome, requires an assistant to complete, and poses a risk of tangling the probe cord and breaching the …
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The influence of the Gonads on Protein Metabolism
… in either males or females resulted in sterility. Associated with this sterility were several well marked physical and mental changes, as represented by the non-appearance of the secondary sexual characters, which were shown ti be dependent on the internal secretions of the gonads. The …
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Cellular/Molecular Analysis of Interspecies Sterile Male Hybrids In Drosophila
… rich biodiversity on Earth. Interspecies hybrid sterility is a postzygotic isolating mechanism that affects the development of hybrids, rendering them sterile. A notable trend, known as Haldane's Rule, describes that heterogametic individual (e.g. males in Drosophila) are more susceptible to …
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