Agricultural aspects of rape and other Brassica products

Walker, K. C.; Booth, E.

doi:10.1002/1438-9312(200107)103:7<441::aid-ejlt441>3.3.co;2-4

Cited by 13 publications

(16 citation statements)

References 2 publications

(2 reference statements)

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“…Although swede and fodder varieties exist, it is primarily used as an oilseed crop with applications as a food source, lubricant, and biofuel. As breeding efforts within the last 60 years have specifically targeted erucic acid and seed glucosinolate content ( Walker and Booth, 2001 ; Wu et al, 2008 ), and due to high oil and protein content, canola has become the world’s second most important oilseed crop after soy bean, especially in Canada, China, India, Europe, and Australia 1 .…”

Section: Introductionmentioning

confidence: 99%

Diversity and Genome Analysis of Australian and Global Oilseed Brassica napus L. Germplasm Using Transcriptomics and Whole Genome Re-sequencing

et al. 2018

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Intensive breeding of Brassica napus has resulted in relatively low diversity, such that B. napus would benefit from germplasm improvement schemes that sustain diversity. As such, samples representative of global germplasm pools need to be assessed for existing population structure, diversity and linkage disequilibrium (LD). Complexity reduction genotyping-by-sequencing (GBS) methods, including GBS-transcriptomics (GBS-t), enable cost-effective screening of a large number of samples, while whole genome re-sequencing (WGR) delivers the ability to generate large numbers of unbiased genomic single nucleotide polymorphisms (SNPs), and identify structural variants (SVs). Furthermore, the development of genomic tools based on whole genomes representative of global oilseed diversity and orientated by the reference genome has substantial industry relevance and will be highly beneficial for canola breeding. As recent studies have focused on European and Chinese varieties, a global diversity panel as well as a substantial number of Australian spring types were included in this study. Focusing on industry relevance, 633 varieties were initially genotyped using GBS-t to examine population structure using 61,037 SNPs. Subsequently, 149 samples representative of global diversity were selected for WGR and both data sets used for a side-by-side evaluation of diversity and LD. The WGR data was further used to develop genomic resources consisting of a list of 4,029,750 high-confidence SNPs annotated using SnpEff, and SVs in the form of 10,976 deletions and 2,556 insertions. These resources form the basis of a reliable and repeatable system allowing greater integration between canola genomics studies, with a strong focus on breeding germplasm and industry applicability.

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Section: Introductionmentioning

confidence: 99%

Diversity and Genome Analysis of Australian and Global Oilseed Brassica napus L. Germplasm Using Transcriptomics and Whole Genome Re-sequencing

et al. 2018

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“…Rapeseed is the common name used for four Brassica species (B. napus, B. rapa, B. juncea and B. carinata), grown for their high seed oil content (Walker & Booth 2001). Rape oil ranks third in production among vegetable oils and its meal (what remains after oil extraction) supplies about 0•12 of feed protein (Berry & Spink 2006).…”

Section: Introductionmentioning

confidence: 99%

Determinants of yield and quality in winter rapeseed (Brassica napus L.) under Mediterranean conditions

Tsialtas

Papantoniou

Baxevanos³

et al. 2017

J. Agric. Sci.

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SUMMARYWinter rapeseed was introduced into Greece a decade ago to provide oil for biodiesel. To identify agronomic traits affecting yield and quality, three hybrids and an inbred line were tested over two seasons (2005–2006 and 2006–2007) and four locations, in central and northern Greece, varying in pedo-climatic conditions. The large variations in seed yield, quality and agronomic traits were largely ascribed to location; in contrast, cultivar accounted for ⩽0·010 of the variation for many traits. Below 40°N, rapeseed is a risky crop; short season, high temperatures and low rainfall during reproductive growth diminished seed yield and oil content, increased oleic and erucic acid and minimized linolenic acid. A hybrid, Exact, with tall stature and large seeds was adaptive to such conditions. The most productive location had dense stands with tall plants bearing numerous pods on the main raceme. At the site with the coldest winter, plant density (PD) was lowest (ca. 30 plants/m2) but rapeseed compensated by producing large seeds, with high oil content and harvest index (HI). A biplot revealed that the hybrid Excalibur, outperforming the other cultivars for oil content in six out of eight trials, produced the highest and most stable oil yield. Combined data showed that seed yield and oil yield were positively correlated with PD, seed size and HI and negatively to the number of pods on branches and per plant. Large seeds had high seed oil content. Oleic acid was negatively correlated to linolenic acid concentration. High temperatures and low rainfall favoured oleic acid, which was positively associated with seed number per pod.

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“…Glucosinolates, a group of sulfur-containing glucosides, are secondary metabolites uniquely detected in Brassicaceae and provide protection against plant pest and pathogens. However, Glucosinolates also impart a pungent flavor and inhibit thyroid function, resulting in liver and kidney abnormalities if consumed in excess in higher animals [ 1 ]. Therefore, it is desirable to reduce the glucosinolate content of seeds, but to maintain a high level of glucosinolates in other tissues to prevent herbivore damage and pathogenic microbes.…”

Section: Introductionmentioning

confidence: 99%

Identification of Candidate Genes for Seed Glucosinolate Content Using Association Mapping in Brassica napus L.

Duan

et al. 2015

Genes

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Rapeseed contains glucosinolates, a toxic group of sulfur-containing glucosides, which play critical roles in defense against herbivores and microbes. However, the presence of glucosinolates in rapeseed reduces the value of the meal as feed for livestock. We performed association mapping of seed glucosinolate (GS) content using the 60K Brassica Infinium single nucleotide polymorphism (SNP) array in 520 oilseed rape accessions. A total of 11 peak SNPs significantly associated with GS content were detected in growing seasons of 2013 and 2014 and were located on B. napus chromosomes A08, A09, C03, and C09, respectively. Two associated regions of GS content covered by these markers were further verified, and three B. napus homologous genes involved in the biosynthesis and accumulation of GS were identified. These genes were multigene family members and were distributed on different chromosomes. Moreover, two genes (BnGRT2 and BnMYB28) associated with GS content were validated by the qRT-PCR analysis of their expression profiles. The further identification and functionalization of these genes will provide useful insight into the mechanism underlying GS biosynthesis and allocation in B. napus, and the associated SNPs markers could be helpful for molecular maker-assisted breeding for low seed GS in B. napus.

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Agricultural aspects of rape and other Brassica products

Cited by 13 publications

References 2 publications

Diversity and Genome Analysis of Australian and Global Oilseed Brassica napus L. Germplasm Using Transcriptomics and Whole Genome Re-sequencing

Diversity and Genome Analysis of Australian and Global Oilseed Brassica napus L. Germplasm Using Transcriptomics and Whole Genome Re-sequencing

Determinants of yield and quality in winter rapeseed (Brassica napus L.) under Mediterranean conditions

Identification of Candidate Genes for Seed Glucosinolate Content Using Association Mapping in Brassica napus L.

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