64 research outputs found
Inheritance of resistance to oat stem rust in the cultivars Ronald and AC Gwen
No full text Mitchell Fetch, J. and Fetch Jr., T. 2011. Inheritance of resistance to oat stem rust in the cultivars Ronald and AC Gwen. Can. J. Plant Sci. 91: 419–423. Oat stem rust, caused by Puccinia graminis Pers. f. sp. avenae Eriks. and E. Henn., causes sporadic epidemics and yield losses in Manitoba and eastern Saskatchewan. Oat (Avena sativa L.) cultivars registered for production in this area possess resistance to stem rust, but their genetic composition is unknown. Race TJJ (NA67), first detected in 1998, is virulent on most Pg genes; thus, it is desirable to know the gene(s) that are present in currently grown oat varieties. The hulled cultivar Ronald and the hulless cultivar AC Gwen were selected for characterization of inheritance of stem rust resistance, and crossed to the susceptible cultivar Triple Crown. Race BLD (NA1) was used to evaluate F1 plants and F2 populations. All F1 plants were resistant, indicating the presence of at least one dominant gene. Pooled F2 populations fit a 13:3 (resistant:susceptible) ratio for both Ronald (χ2 =0.31, P =0.58) and AC Gwen (χ2 =3.32 and P =0.07), indicating the presence of one dominant and one recessive gene. Segregation ratios in pooled F3 families fit a 7:8:1 (homozygous resistant:segregating:homozygous susceptible) ratio with race BLD (χ2 =0.84, P =0.66 for Ronald; χ2 =1.99, P =0.37 for AC Gwen), a 1:2:1 ratio (segregating families with 1:3 ratio) with race TJD (χ2 =2.87, P =0.24 for Ronald; χ2 =3.45, P =0.18 for AC Gwen), and a 1:2:1 ratio (segregating families with 3:1 ratio) with race FDJ (χ2 =1.33, P =0.51 for Ronald; χ2 =2.04, P =0.36 for AC Gwen). These results and reactions to known races of Puccinia graminis f. sp. avenae indicate that both Ronald and AC Gwen possess the dominant gene Pg2 and recessive gene Pg13. This genetic study characterized the stem rust resistance in Ronald and AC Gwen, and confirmed the limited base of stem rust resistance in Canadian oat cultivars. </jats:p
Summit oat
No full text Mitchell Fetch, J. W., Brown, P. D., Ames, N., Chong, J., Fetch, Jr., T. G., Haber, S. M., Menzies, J. G., Tekauz, A., Townley-Smith, T. F. and Stadnyk, K. D. 2011. Summit oat. Can. J. Plant Sci. 91: 787–791. Summit is a white-hulled spring oat (Avena sativa L.) cultivar postulated to carry the crown rust resistance combination Pc38, Pc39, Pc48, and Pc68, which was effective against the prevalent pathotypes of crown rust on the Canadian prairies at the time of its release. It has very good resistance to loose and covered smut, moderately good resistance to most of the prairie stem rust races (likely due to the presence of Pg2 and Pg13) and is resistant to moderately resistant to barley yellow dwarf virus (BYDV). Summit has good kernel weight, percent plump kernels, and percent thin kernels. Summit exhibits high yielding capacity in the oat growing areas of western Canada. Summit was registered (Reg. No. 6529) in Canada 2008 November 29. </jats:p
Stainless oat
No full text Mitchell Fetch, J. W., Brown, P. D., Ames, N., Chong, J., Fetch, Jr., T. G., Haber, S. M., Menzies, J. G., Townley-Smith, T. F. and Stadnyk, K. D. 2011. Stainless oat. Can. J. Plant Sci. 91: 357–361. Stainless is a grey-hulled spring oat (Avena sativa L.) cultivar postulated to carry the crown rust resistance gene, Pc91, which was effective against the prevalent pathotypes of crown rust races on the Canadian prairies at the time of its release. Stainless could possibly also carry one or more of the crown rust resistance genes, Pc38, Pc39, and Pc68. It had very good resistance to loose and covered smut, good resistance to the prairie stem rust races (likely due to the presence of Pg2, Pg13, and Pga) and moderate tolerance to barley yellow dwarf virus (BYDV). Stainless had high kernel weight, intermediate percent plump kernels, intermediate percent thin kernels, and high levels of total dietary fibre. Stainless exhibited high yielding capacity in the eastern portion of the Black soil zone of western Canada where resistance to rust diseases is important. Stainless was supported for registration by the Prairie Grain Development Committee in February 2007. Stainless was registered (Reg. No. 6422) on 2008 Apr. 07. </jats:p
Peduncle breaking resistance: a potential selection criterion to improve lodging tolerance in Oat
No full textBreeding for tolerance to lodging is an objective, but also a challenge, in oat (Avena sativa L.) breeding programs. A widely adopted method to assess breeding lines for tolerance to lodging is based on visual scoring of plant standability (1 = standing upright; 9 = completely lodged). The lack of sufficient lodging pressure due to weather or growing conditions often renders the visual scoring method ineffective. We present an alternative approach that allows selection for tolerance to stem lodging by screening for peduncle strength in the absence of lodging pressure. This approach also provides objective selection of lodging tolerance using a quantitatively measurable plant trait rather than subjective scoring of the lodged plants. Stem structural and mechanical properties of six oat cultivars with varying levels of lodging tolerance were tested at field experiments over 3 site-years under three nitrogen rates. Results suggested peduncle breaking resistance (PBR), measured below the panicle, as a potential selection criterion for stem strength and therefore lodging tolerance. Significant genetic variation among oat cultivars (p 0.73, p ≤ 0.05). This suggests that PBR provides a good estimation of the whole culm strength. Phenotyping of PBR can be easily integrated into breeding programs because of the ease of sampling and rapid measurement.The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author
Framework for intelligent homes
No full textThe Internet of Things refers to the connection of everyday objects to the Internet. This allows humans to monitor and interact with these objects from anywhere in the world. With IoT, we can envision a future where everyday objects such as toasters, coffee makers, vacuum cleaners would be uniquely identifiable and controlled over the internet. With so many wide variety of devices connected to the Internet there is a need for a scalable, fault tolerant, distributed processing framework that can fetch, process, store, display, and analyzes such large amount of data generated by these devices. For this project, a system was built which can receive data from multiple devices and provide an unified framework to process, store, and display data from these devices in real time. The framework henceforth means collection of environment which we have built. To demonstrate the capabilities of this framework, an Intelligent Home system was simulated which monitors room temperature using a temperature sensor, connected via a Raspberry Pi. The Raspberry Pi acts as a gateway to fetch data from the sensors, which is processed by the framework in real time to show the room temperature trends on the UI. The framework was built using Apache Spark, a fast, distributed, scalable and general engine for large-scale data processing and Apache Cassandra, which is a free and open-source distributed NoSQL database management system designed to handle large amounts of data. Both Apache Spark and Cassandra are an ideal fit for processing large amounts of data since they provide excellent horizontal scalability, i.e. they can process every increasing amounts of data by adding more hardware capacity without the need to change any framework code
AAC Crossfield Red Spring Wheat
No full textAAC Crossfield, an awned hard red spring wheat (Triticum aestivum L.), cultivar, combines high grain yield and good agronomic characteristics with excellent resistance to leaf, stem and stripe rust. AAC Crossfield is significantly shorter than Conquer and AAC Foray, and has maturity, straw strength, and test weight similar to the check cultivars. AAC Crossfield has improved farinograph stability and is eligible for grade of the Canada Prairie Spring Red wheat market class.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
AAC Prevail Canada Western Red Spring Wheat
No full textAAC Prevail (BW462) is a high yielding spring wheat (Triticum aestivum L.) with high protein content, and is adapted to the growing conditions in the Canadian prairies. AAC Prevail yielded similar to Unity, the highest yielding check in the Central Bread Wheat Cooperative Registration tests (2010-2012). Over three years of testing in Manitoba (zone 1), AAC Prevail achieved 1.5% higher yield than Unity whereas in Saskatchewan (zone 2), it yielded 98.4% of Unity. AAC Prevail matured one day later than Unity and McKenzie, the earliest maturing checks. AAC Prevail was taller than all the checks but had better lodging resistance than Unity, McKenzie, and 5603HR. The test weight and kernel weight of AAC Prevail were similar to the checks. AAC Prevail was rated resistant to leaf rust (Puccinia triticina Eriks.) and moderately resistant to stem rust (Puccinia graminis f. sp. tritici) but susceptible to bunt (Tilletia caries) and loose smut (Ustilago tritici). The Fusarium head blight (Fusarium graminearum) rating was intermediate for visual rating index (VRI), but the combined incidence, severity, and deoxynivalenol (ISD) rating was moderately resistant. During three years of evaluation, AAC Prevail was resistant to orange wheat blossom midge (Sitodiplosis mosellana GĂŠhin). AAC Prevail was registered under the Canada Western Red Spring class for its high protein as well as good milling and baking performance.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
AAC Castle Red Spring Wheat
No full textAAC Castle, an awned hard red spring wheat (Triticum aestivum L.), cultivar, combines high grain yield and good agronomic characteristics with excellent resistance to leaf, stem, stripe rust, common bunt and loose smut. It also expressed tolerance to the orange wheat blossom midge. Based on 39 station years of data in the registration trials from 2014 to 2016, the grain yield of AAC Castle was about 17% higher than 5700PR but similar to the other checks. AAC Castle was significantly shorter than AAC Foray and CDC Terrain, but had similar lodging resistance and maturity. AAC Castle had higher test weight, protein concentration, falling number and flour yield than AAC Foray and CDC Terrain. AAC Castle is eligible for grade of the Canada Prairie Spring Red wheat market class.The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author
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