scholarly journals Erucic acid concentration of rapeseed ( Brassica napus L.) oils on the German food retail market

2021 ◽  
Author(s):  
Marco Russo ◽  
Feng Yan ◽  
Annegret Stier ◽  
Linda Klasen ◽  
Bernd Honermeier
Keyword(s):  
Brassica Napus ◽  
Erucic Acid ◽  
Acid Concentration ◽  
Retail Market ◽  
Food Retail ◽  
Brassica Napus L ◽  
German Food

Effects of abscisic acid and temperature on erucic acid accumulation in oilseed rape (Brassica napus L.)

1997 ◽  
Vol 150 (4) ◽  
pp. 414-419 ◽  
Author(s):  
Jeroen A. Wilmer ◽  
Johannes P.F.G. Helsper ◽  
Linus H.W. van der Plas
Keyword(s):  
Abscisic Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Oilseed Rape ◽  
Brassica Napus L ◽  
Acid Accumulation

A STUDY OF ERUCIC ACID ALLELES IN DIGENOMIC RAPESEED (Brassica napus L.)

1981 ◽  
Vol 61 (2) ◽  
pp. 198-202 ◽  
Author(s):  
I. J. ANAND ◽  
R. K. DOWNEY
Keyword(s):  
Fatty Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Direct Evidence ◽  
Brassica Campestris ◽  
Fatty Acid Analysis ◽  
Interspecific Crosses ◽  
Seed Oils ◽  
Brassica Napus L ◽  
Brassica Crops

Five genes have been identified in Brassica crops which control the level of synthesis of the fatty acid, erucic, in their seed oils. These genes, designated e, Ea, Eb, Ec, and Ed, act in an additive manner and result in erucic acid levels of < 1, 10, 15, 30 and 3.5, respectively. No direct evidence has yet been obtained to show that these genes are true alleles. Selected plants of the amphidiploid species Brassica napus L. with erucic acid contents of 7–8% and a genotype of EdEdee were reciprocally crossed with selected plants with erucic acid levels of [Formula: see text] and a genotype of Eaeee. Fatty acid analysis of F1 and backcross seed demonstrated that the genes Ed and Ea in the parents used were in the same genome and were truly allelic. Interspecific crosses were made between these B. napus parents and selected zero erucic acid plants of Brassica campestris L. (genotype "ee") to determine whether the genes Ed and Ea resided in the oleracea or the campestris genome of B. napus parents. Fatty acid analysis of F1 and backcross seed from these interspecific crosses suggest that the alleles of Ed and Ea are located on chromosomes of the oleracea genome.

Association of a RAPD marker with linolenic acid concentration in the seed oil of rapeseed (Brassica napus L.)

Genome ◽  
1995 ◽  
Vol 38 (2) ◽  
pp. 414-416 ◽  
Author(s):  
P. K. Tanhuanpää ◽  
J. P. Vilkki ◽  
H. J. Vilkki
Keyword(s):  
Brassica Napus ◽  
Linolenic Acid ◽  
Acid Concentration ◽  
Seed Oil ◽  
Rapd Marker ◽  
Brassica Napus L ◽  
Breeding Programs ◽  
Selection For ◽  
Rflp Rapd ◽  
Low Linolenic

The F2 progeny (64 individuals) from the cross between oilseed rape (Brassica napus L.) cultivar Topas and R4 (a low linolenic mutation line) was analyzed with 8 RFLPs and 34 RAPDs to discover a genetic tag for gene(s) affecting linolenic acid concentration. According to variance analysis (ANOVA), one RAPD marker (25a) was significantly associated with linolenic acid content; the linolenic acid concentration in the seeds of F2 individuals showing the marker (includes both homo- and hetero-zygotes) was 7.43 ± 1.35% and in those lacking the marker was 5.70 ± 1.52%. Marker 25a may be used to facilitate selection for fatty acid composition in future breeding programs of oilseed rape.Key words: Brassica napus, RFLP, RAPD, linolenic acid.

Role of the Ring Methyl Groups in Abscisic Acid Activity in Erucic Acid Accumulation in Oilseed Rape (Brassica napus L.)

1998 ◽  
Vol 17 (1) ◽  
pp. 19-23 ◽  
Author(s):  
J. A. Wilmer ◽  
S. R. Abrams ◽  
J. P. F. G. Helsper ◽  
L. H. W. van der Plas
Keyword(s):  
Abscisic Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Oilseed Rape ◽  
Methyl Groups ◽  
Brassica Napus L ◽  
Acid Accumulation

scholarly journals Rebalancing the Market Power. Manufacturer and Retailer Brands in the German Food Retail Market

2015 ◽  
Vol 48 (1) ◽  
pp. 21-44
Author(s):  
Andreas Bielig
Keyword(s):  
Market Power ◽  
Price Competition ◽  
Retail Market ◽  
Food Retail ◽  
Political Implications ◽  
Total Food ◽  
Market Coverage ◽  
German Food ◽  
The Empirical Analysis ◽  
Financial Losses

Abstract The German food retail market is considered to be one of the most competitive markets worldwide. A narrow oligopoly of domestic retail chains dominates competition at the national and regional levels, driven mostly by price competition and extensive market coverage. As a result, market entrance for potential newcomers is highly restricted, even for such global players like Wal-Mart, which retreated in 2006 after nine years of substantial financial losses in Germany. There have been discernable attempts by the domestic incumbents to rebalance the traditional “task division”, affecting the range of customers choices as well as retail brands. However, within ten years the share of large retailers brands earnings in the total food retail market increased from 21.8 percent to 38.8 percent in 2012, as “house brands” optimized their assortment, increased their independence from main suppliers and squeezed out competitors. The empirical analysis presented below describes the role played by different retail brands in German food retail market as measured by their market power, and considers its political implications.

Effect of time of sowing on oil content, erucic acid and glucosinolate contents in rapeseed (Brassica napus L. cv. Marnoo)

1986 ◽  
Vol 26 (5) ◽  
pp. 607 ◽  
Author(s):  
JP Sang ◽  
CA Bluett ◽  
BR Elliott ◽  
RJW Truscott
Keyword(s):  
Brassica Napus ◽  
Erucic Acid ◽  
Oil Content ◽  
Seed Meal ◽  
Glucosinolate Content ◽  
Brassica Napus L ◽  
Sowing Time ◽  
Meal Quality

The effect of time of sowing on the oil and meal quality of rapeseed (Brassica napus L. cv. Marnoo) was investigated at Werribee, Victoria, during 198 1 and 1982. In both years oil content declined with later sowing but the proportion of erucic acid in the oil was unaffected by sowing time. In contrast, later sowing increased the glucosinolate content of the seed meal, with July-September sowings exceeding the Canola standard. This increase was due primarily to the increased content of 2-hydroxybut-3- enyl glucosinolate (progoitrin).

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