39 research outputs found
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
Furlong Oat
No full text Furlong is a high-yielding, tan-hulled oat (Avena sativa L.) cultivar postulated to carry the crown rust resistance combination Pc38, Pc39 and Pc68, which is effective against most of the current crown rust races on the Canadian prairies. It has very good resistance to loose and covered smut, good resistance to stem rust (likely due to Pg2 and Pg13) and moderate tolerance to barley yellow dwarf virus (BYDV). Furlong has very high kernel weight, high percent plump kernels and low percent thin kernels. According to its grain characteristics, including hull-to-groat ratio, protein content and milling yield, Furlong should be acceptable for milling purposes. Furlong is adapted for the oat-growing areas of western Canada and in particular the Black Soil Zone of Manitoba and Saskatchewan, where oat crown rust is prevalent. Key words: Oat, Avena sativa L., cultivar description, milling oat </jats:p
AC Gwen hulless oat
No full text AC Gwen is a hulless oat (Avena sativa L.) cultivar postulated to carry the crown rust resistance combination Pc38, Pc39 and Pc68, which is highly effective against most of the present crown rust races on the Canadian prairies. It has very good resistance to loose and covered smut and good resistance to most of the prevalent races of stem rust, due to the likely presence of Pg2 and Pg13, and moderate tolerance to barley yellow dwarf virus. AC Gwen has characteristics that confer good milling quality, such as high test weight, kernel weight, and percent plump kernels. The cultivar has suitable levels of protein and oil for food products or for animal feed. It has good resistance to lodging. AC Gwen is well suited for production in the oat growing areas of western Canada and in particular the Black Soil Zone of Manitoba and Saskatchewan where crown rust is prevalent. Key words: Oat, Avena sativa L., cultivar description, hulless oat, disease resistance </jats:p
Pinnacle oat
No full text Pinnacle is a high-yielding, white-hulled oat (Avena sativa L.) cultivar postulated to carry the crown rust resistance combination Pc38, Pc39 and Pc68, which is highly effective against most of the present crown rust races on the Canadian prairies. It has very good resistance to loose and covered smut and good resistance to most of the prevalent races of stem rust, due to the likely presence of Pg2, Pg9 and Pg13 and moderate tolerance to barley yellow dwarf virus. Pinnacle has high test weight, high kernel weight, and very high percent plump kernels. According to its grain characteristics, including hull-to-groat ratio, protein content and oil content, Pinnacle should be acceptable for milling purposes. Pinnacle is well suited for the oat growing areas of western Canada and in particular the Black Soil Zone of Manitoba and Saskatchewan, where oat crown rust is prevalent. Key words: Oat, Avena sativa L., cultivar description, disease resistance, yield, milling oat </jats:p
Ronald oat
No full text Ronald is a high-yielding, white-hulled, tall semidwarf oat (Avena sativa L.) cultivar with greatly improved panicle emergence compared with previously tested semidwarf lines. Ronald is postulated to carry the crown rust resistance combination Pc38, Pc39 and Pc68, which is highly effective against most of the present crown rust races on the Canadian prairies. It has very good resistance to loose and covered smut and good resistance to most of the prevalent races of stem rust, due to the likely presence of Pg2, Pg9 and Pg13, and moderate tolerance to barley yellow dwarf virus. Ronald has good kernel characteristics, such as high test weight, kernel weight and percent plump kernels. The grain characteristics exhibited by Ronald including hull-to-groat ratio, protein content and oil content should make it suitable for milling. It has excellent resistance to lodging. Ronald is well adapted for the oat growing areas of western Canada and in particular the Black Soil Zone of Manitoba and Saskatchewan where oat crown rust is prevalent. Key words: Oat, Avena sativa L., cultivar description, semidwarf oat, disease resistance, milling oat </jats:p
Leggett Oat
No full text Leggett is the first oat (Avena sativa L.) cultivar released in western Canada carrying the crown rust resistance gene Pc94. Leggett carries the crown rust resistance combination Pc68 and Pc94, which provides good resistance to the crown rust populations currently present on the eastern Canadian Prairies. As a result of the presence of Pc94 providing resistance to oat crown rust, this line should exhibit excellent yield stability in the rust-prone regions of the prairies. Leggett has very good resistance to loose and covered smut, resistance to the prevalent races of oat stem rust other than NA67, but poor tolerance to barley yellow dwarf virus (BYDV). Leggett has kernel characteristics suited to milling end uses, with high test weight and 1000-kernel weight and high percent plump kernels. The beta-glucan content of Leggett is equal to or higher than that of the checks, making it a desirable milling quality cultivar. Key words: Oat, Avena sativa L., cultivar description, crown rust resistance, milling oat, Pc94 </jats:p
Spherical k-Means Clustering
No full textClustering text documents is a fundamental task in modern data analysis, requiring
approaches which perform well both in terms of solution quality and computational efficiency. Spherical k-means clustering is one approach to address both issues, employing
cosine dissimilarities to perform prototype-based partitioning of term weight representations
of the documents.
This paper presents the theory underlying the standard spherical k-means problem
and suitable extensions, and introduces the R extension package skmeans which provides
a computational environment for spherical k-means clustering featuring several solvers:
a fixed-point and genetic algorithm, and interfaces to two external solvers (CLUTO and
Gmeans). Performance of these solvers is investigated by means of a large scale benchmark
experiment. (authors' abstract
