1,167 research outputs found
Correlations between grain-yield and percentage grain moisture at harvest in ontario hybrid corn trials
No full textThe correlation between hybrid corn (Zea mays L.) grain yield and percentage grain moisture at harvest was measured in Ontario performance trial data. Positive correlations were detected in mid- to full-season areas.D. E. Mather and L. W. Kannenber
Maize Resistance to Infection by Fusariumgraminearum: Mechanisms and Inheritance
No full textNote:In evaluating ear rot resistance in maize, choice of inoculation method(s) should be considered since different methods may assess different resistance mechanisms. Comparison of six inoculation methods showed that the silk-channel injection and kernel-stab techniques were effective in detecting silk and kernel resistance, respectively. Inheritance of kernel resistance was assessed after ears were inoculated with the kernel-stab method. Resistance was predominantly due to additive gene effects, and appears to be controlled by several loci. The reaction of waxy and non-waxy endosperm maize was also evaluated with the silk and kernel methods. No significant differences were observed between these isogenic lines. [...]Lors de l'évaluation de la résistance du mais a la fusariose de l’épi, le choix de la (des) méthode(s) d'inoculation doit être pris en compte, car différentes méthodes mettent en évidence différents mécanismes de résistance. La comparaison de six méthodes d'inoculation a montré que la technique d'injection des canaux des soies et la technique de piquage des grains étaient efficaces pour détecter la résistance des soies et détecter la résistance des grains respectivement. La transmission héréditaire de la résistance des grains a été évaluée après que les épis aient été inocules avec la technique de piquage des grains. La résistance était principalement due à des effets génétiques additifs, et semblait être contrôlée par plusieurs loci. La réaction d'endospermes de Zea mays ceratina et Zea mays indentata a également été évaluée avec les techniques d'injection des canaux des soies et de piquage des grains. Aucune différence significative n'a été observée entre ces deux lignées isogéniques. La mise en évidence de deoxynivalenol (DON), une toxine produite par F. graminearum, a montré que sa distribution était très variable d'un grain de mais a l'autre, avec quelques grains contenant de grandes quantités de DON. [...
Mapping of disease resistance loci in barley based on visual assessment of naturally occurring symptoms
No full textUsing field-scored data of disease severity under natural infestation, we mapped loci affecting resistance to powdery mildew (Blumeria graminis DC f. sp. hordei Ém. Marchal), leaf rust (Puccinia hordei Otth.), stem rust (Puccinia graminis f. sp. tritici Eriks. & E. Henn.), scald [Rhynchosporium secalis (Oudem.) J.J. Davis], and net blotch (Pyrenophora teres Drechs.). The mapping population included parents and doubled-haploid progeny of the two-row barley cross Harrington/TR306. Resistance was affected by two to five loci, explaining 8 to 45% of the phenotypic variance, per disease. All chromosomes, except chromosome 5 (1H), contained regions with at least one disease resistance locus. One region on chromosome 4 (4H) contributed to resistance to stem rust, scald, and net blotch. This region has previously been reported to affect days to heading and maturity. Two known resistance genes in the population, Rpgl and M1g, were mapped to within 3 centimorgans (cM) of their previously estimated genomic locations by simple interval mapping of the field-scored data. This indicates that the genomic positions of disease resistance genes can be estimated accurately with simple interval mapping, even on the basis of field-scored data.Steffenson, Brian; Spaner, D.; Shugar, L.P.; Choo, T.M.; Falak, I.; Briggs, K.G.; Legge, W.G.; Falk, D.E.; Ullrich, S.E.; Tinker, N.A.; Mather, D.E.. (1998). Mapping of disease resistance loci in barley based on visual assessment of naturally occurring symptoms. Retrieved from the University Digital Conservancy, 10.2135/cropsci1998.0011183X003800030037x
A XENOLITH-BASED LITHOSPHERIC TRANSECT OF THE SLAVE CRATON, N.W.T., CANADA
No full textDuring the last decade, the Canadian Slave craton has emerged as an important global diamond resource. Recent work on the sub-continental lithospheric mantle (SCLM) beneath this craton has yielded tantalising suggestions about its structure and composition that are of interest to the diamond mining effort. Geochemical studies of xenoliths, sulphides, diamond inclusions and mineral separates, together with teleseismic and magnetotelluric interpretations have indicated that the Slave SCLM has a unique stratified structure. This consists of a highly depleted mantle layer above ~110 km, most pronounced in the central Slave region, with a relatively ‘fertile’ layer of mantle beneath that extends to the base of the lithosphere. As diamond mining and exploration in the Slave craton matures, more samples are available for study, allowing testing of earlier models and refinements on existing geotherm estimates.
This PhD provides new silicate major and trace element compositions, thermobarometry and rhenium-osmium (Re-Os) isotope data for two new suites of peridotite xenoliths from Slave craton kimberlites (Artemisia and Diavik), as well as new Re-Os data for existing suites from Gahcho Kué (Kopylova and Caro, 2004). Major element data from all localities are used to calculate new geotherms for the Slave Craton, using the method outlined by McKenzie et al (2005) and expanded by Mather et al. (2011). The average mineral compositions, rare-earth elements, Mg#, and Rhenium-depletion ages (TRD) for individual xenoliths from all localities are plotted on these new geotherms. The resulting patterns of TRD with depth are used to evaluate the suggestion that the Slave lithosphere is stratified in age as well as composition.
Finally, all kimberlite localities studied are used as ‘pseudo-boreholes’ to create a 2-dimensional linear transect from NNW-SSE through the Slave SCLM. The lithospheric stratigraphy illustrated by this transect is used to comment on the apparent layered nature of the continental lithosphere beneath the Slave province and explore which, if either, of the two main craton formation hypotheses were operating during its genesis
Review of the thesis: “The activities of the Soviet police to combat crime and public protection in Western Siberia in 1925-1937” by D.E. Kuznetsov
No full textThe article analyses the thesis “The activities of the Soviet police to combat crime and protect public order in Western Siberia in 1925-1937” by D.E. Kuznetsov. The structure and logic of the construction of the work, the validity of the conclusions, the merits of the dissertation research and its controversial points are considered. Special attention is paid to the source of the dissertation. In conclusion, the author of the article summaries that the contents of D.E. Kuznetsov's facts, assessments and conclusions can be used to develop textbooks on the history of crime, the history of law enforcement bodies, the history of Russia
Motion video coding for visual telephony
No full textElectrical Engineering, Mathematics and Computer Scienc
Investigations on nonlinear streamcipher systems: Construction and evaluation methods
No full textElectrical Engineering, Mathematics and Computer Scienc
Selected aspects of discrete-time filtering techniques as applied to sensor control and signal processing problems
No full textElectrical Engineering, Mathematics and Computer Scienc
Hermeneutika Friedrich D.E. Schleiermacher sebagai Metode Tafsir Al-Qur’an (Kajian ayat ikhlāṣ; jilbāb; sayyārah; dan al-hudā)
No full textText, reader, and author are three entities that are interlocked in a process of understanding text. For Friedrich D.E. Schleiermacher, someone can only understand the text he/she reads if he/she delves into the author\u27s psychological experience and knows exactly the phrases that the author uses in writing text. Talking about reading the Qur’an as a text found by modern humans today which its existence as a text is revealed in the seventh century in the Arabic nation, it is a must for anyone to know the Arabic grammatical used by the Qur\u27an. This article discusses linkages between the language analysis formulated by Schleiermacher and the method of understanding the Qur\u27an which is today found in the text form with special reference to the four key terms discussed. Using the descriptive-analysis method this research finds that Schleiermacher’s hermeneutic becomes relevant to Quranic studies because it can enrich existing interpretive methods. The concept of psychological hermeneutics will contribute to the realm of asbāb al-nuzūl study and the necessity of proper faith. Whereas the grammatical will contribute to the realm of understanding Qur’an as ancient Arabic text.
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