Swedes and Turnips

Gowers, S.

doi:10.1007/978-0-387-92765-7_8

Cited by 16 publications

(15 citation statements)

References 127 publications

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“…These other sites predate MO. While polymath1, the first and most successful of five projects had 39 contributors [7]; Tricki in September of 2010 had 100 users who have made at least one edit [10]; MathOverflow in October 2010 had 5,268 authors who had made at least one contribution. Already MO has a magnitude more contributors.…”

Section: Figure 1 An Example Questionmentioning

confidence: 99%

Participation in an online mathematics community

Tausczik

Pennebaker

2012

Proceedings of the ACM 2012 Conference on Computer Supported Cooperative Work

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Why do people contribute content to communities of questionanswering, such as Yahoo! Answers? We investigated this issue on MathOverflow, a site dedicated to research-level mathematics, in which users ask and answer questions. MathOverflow is the first in a growing number of specialized Q&A sites using the Stack Exchange platform for scientific collaboration. In this study we combine responses to a survey with collected data on posting behavior on the site. User behavior suggests that building reputation is an important incentive, even though users do not report this in the survey. Level of expertise affects users' reported motivation to help others, but does not affect the importance of reputation building. We discuss the implications for the design of communities to target and encourage more contributions.

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Section: Figure 1 An Example Questionmentioning

confidence: 99%

Participation in an online mathematics community

Tausczik

Pennebaker

2012

Proceedings of the ACM 2012 Conference on Computer Supported Cooperative Work

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“…napobrassica (L.) Hanelt , called ‘rutabagge’ in Sweden, ‘rutabaga’ in the USA and Canada, and ‘swede’ in the UK, New Zealand and Australia, is a cool-weather root crop thought to have been derived from the natural or spontaneous hybridization between B. rapa (turnip) and B. oleracea (cabbage or kale) [ 1 ]. Rutabaga is often assumed to have originated in Sweden, but may have come from Finland [ 2 , 3 ]. Nevertheless, it was distributed from Sweden (where it grew in the wild before 1400) to England, Germany and other European countries around the end of the eighteenth century [ 4 ] and was introduced to North America by European immigrants in the early nineteenth century [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Molecular genetic diversity and population structure analyses of rutabaga accessions from Nordic countries as revealed by single nucleotide polymorphism markers

Fredua-Agyeman

Hwang

et al. 2021

BMC Genomics

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Background Rutabaga or swede (Brassica napus ssp. napobrassica (L.) Hanelt) varies in root and leaf shape and colour, flesh colour, foliage growth habits, maturity date, seed quality parameters, disease resistance and other traits. Despite these morphological differences, no in-depth molecular analyses of genetic diversity have been conducted in this crop. Understanding this diversity is important for conservation and broadening the use of this resource. Results This study investigated the genetic diversity within and among 124 rutabaga accessions from five Nordic countries (Norway, Sweden, Finland, Denmark and Iceland) using a 15 K single nucleotide polymorphism (SNP) Brassica array. After excluding markers that did not amplify genomic DNA, monomorphic and low coverage site markers, the accessions were analyzedwith 6861 SNP markers. Allelic frequency statistics, including polymorphism information content (PIC), minor allele frequency (MAF) and mean expected heterozygosity ($$ \overline{H} $$ H ¯ e) and population differentiation statistics such as Wright’s F-statistics (FST) and analysis of molecular variance (AMOVA) indicated that the rutabaga accessions from Norway, Sweden, Finland and Denmark were not genetically different from each other. In contrast, accessions from these countries were significantly different from the accessions from Iceland (P < 0.05). Bayesian analysis with the software STRUCTURE placed 66.9% of the rutabaga accessions into three to four clusters, while the remaining 33.1% constituted admixtures. Three multivariate analyses: principal coordinate analysis (PCoA), the unweighted pair group method with arithmetic mean (UPGMA) and neighbour-joining (NJ) clustering methods grouped the 124 accessions into four to six subgroups. Conclusion Overall, the correlation of the accessions with their geographic origin was very low, except for the accessions from Iceland. Thus, Icelandic rutabaga accessions can offer valuable germplasm for crop improvement.

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“…rapifera Metzg.) is a bulbous root vegetable crop, which has historically been an important source of vitamin C in northern Europe due to stability in cold storage . It is rich in crucifer‐specific glucosinolates (GLSs), whose break‐down products are involved in plant defence and have potential dietary health benefits .…”

Section: Introductionmentioning

confidence: 99%