INHERITANCE OF FATTY ACID COMPOSITION IN WINTER FORMS OF RAPESEED, BRASSICA NAPUS

1969 ◽  
Vol 49 (3) ◽  
pp. 313-319 ◽  
Author(s):  
J. Krzymanski ◽  
R. K. Downey
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Correlation Coefficients ◽  
Eicosenoic Acid ◽  
Fatty Acid Analysis ◽  
Long Chain Fatty Acids ◽  
Brassica Napus L ◽  
Winter Rapeseed

The transfer of the zero erucic acid characteristic from spring to winter rapeseed (Brassica napus L.) and the identification of a new allele determining the erucic acid level in rapeseed oil are reported. Fatty acid analysis of F2 seed from the cross zero × low (7%) erucic acid winter rapeseed parents supported the hypothesis that, in these strains, one gene pair governs the level of erucic acid, and that each, allele contributes approximately 3.5% erucic and 6% eicosenoic acid to the seed oil. Gene action is similar to other alleles in this series, in that the genes display no dominance and act in an additive manner. The long-chain fatty acids, erucic and eicosenoic, were each significantly negatively correlated with the 18 carbon fatty acids, oleic and linoleic. Within each of the three F2 genotypes, correlation coefficients between oleic and linoleic were also negative and significant.

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.

scholarly journals Biosynthesis of Acyl Lipids Containing Very-Long Chain Fatty Acids in Microspore-Derived and Zygotic Embryos of Brassica napus L. cv Reston

1992 ◽  
Vol 99 (4) ◽  
pp. 1609-1618 ◽  
Author(s):  
David C. Taylor ◽  
Dennis L. Barton ◽  
Kevin P. Rioux ◽  
Samuel L. MacKenzie ◽  
Darwin W. Reed ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Brassica Napus ◽  
Zygotic Embryos ◽  
Long Chain Fatty Acids ◽  
Brassica Napus L ◽  
Acyl Lipids ◽  
Long Chain ◽  
Chain Fatty Acids

scholarly journals CORRELATIONS INVOLVING OIL AND FATTY ACIDS IN RAPESEED

1969 ◽  
Vol 49 (5) ◽  
pp. 573-580 ◽  
Author(s):  
B. R. Stefansson ◽  
A. K. Storgaard
Keyword(s):  
Fatty Acids ◽  
Brassica Napus ◽  
Oil Content ◽  
Seed Oil ◽  
Correlation Coefficients ◽  
Dry Weight ◽  
Strong Tendency ◽  
Brassica Napus L ◽  
Positive Correlation ◽  
Total Fatty Acids

Four populations of rapeseed plants (Brassica napus L.) were used in an investigation of the correlation of seed oil and its component fatty acids; the constituents of the oil were palmitic, oleic, linoleic, linolenic, and eicosenoic acids. Oil content was calculated as percent of the dry weight of the seed and fatty acids from the oil as percent of total fatty acids (TFA) and as percent of seed. Correlation coefficients were calculated for all pairs of fatty acids and for oil and each fatty acid.When fatty acids were expressed as percent of TFA, there was a strong tendency for negative correlations between oleic and other fatty acids and a tendency for positive correlation between linoleic and linolenic. These results are essentially similar to published correlations. When fatty acids were expressed as percent of seed, there were no consistently significant correlations for any pair of fatty acids in the four populations of rapeseed plants.When fatty acids were expressed as percent of TFA and oil as percent of seed, there were several consistently high negative correlations between oil and fatty acids. When both fatty acids and oil were expressed as percent of seed, most of the correlations between oil and fatty acids were positive, as might be expected since fatty acids are a part of the oil.

scholarly journals Fatty Acid and Transcript Profiling in Developing Seeds of Three Brassica napus Cultivars

2015 ◽  
Vol 72 (1) ◽  
pp. 3-32
Author(s):  
Mariana Petkova ◽  
Wun S. Chao ◽  
Leonard Cook ◽  
Mark West ◽  
Mukhlesur Rahman ◽  
...  
Keyword(s):  
Gene Expression ◽  
Fatty Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Seed Development ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Eicosenoic Acid ◽  
Expression Of Genes ◽  
Spring Canola

Abstract Fatty acid levels and gene expression profiles for selected genes associated with the synthesis of fatty acids (FA), triacylglycerol, and oil body proteins were examined in three oilseed rape (Brassica napus) cultivars that have utility for cultivar development in our spring canola breeding program. The seed oil content of Bronowski, Q2, and Westar was 39.0, 40.1, and 40.6%, respectively at 40 days after flowering (DAF). During the 20 to 40 day period of seed development, cultivars had varying levels of palmitic, stearic, oleic, linoleic, α-linolenic, eicosenoic, and erucic acid. In general, the percentage of each FA was similar among the cultivars during seed development. However, the level of oleic acid was lower and the levels of eicosenoic acid and erucic acid were higher in Bronowski than in Q2 and Westar seeds; linoleic acid also tended to be lower in Bronowski. Gene expression among the cultivars was similar from 10 to 40 DAF. The few exceptions were that expression of KAS1 and SAD were higher in Westar and Q2 than in Bronowski at 25 DAF, SAD was highest in Q2, intermediate in Westar, and lowest in Bronowski at 35 DAF, FAD2 was higher in Q2 than in Bronowski at 35 DAF, FAD3 was higher in Q2 than in Bronowski at 15 DAF and Q2 and Westar at 25 and 30 DAF, and FAE1 was higher in Westar and Q2 than in Bronowski at 30 DAF. Correlation analysis for gene expression against DAF for each genotype supported a common trend in gene expression among the three cultivars with gene expression tending to decrease over time; except for LPAAT, which tended to increase. The correlation between the level of FAs and expression of genes by genotype indicated no general trend; rather correlations seem to depend on the genotype.

scholarly journals Fatty acid profiling in gobhi sarson (Brassica napus)

2021 ◽  
Vol 22 (3) ◽  
pp. 409-414
Author(s):  
Sunidhi Tiwari ◽  
S. K. Gupta ◽  
S. K. Rai ◽  
R. G. Upadhyay ◽  
Jeevanjot Kaur ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Linolenic Acid ◽  
Oil Content ◽  
Brassica Species ◽  
Quality Parameters ◽  
Fatty Acid Profiling

An experiment was carried out during 2017-2018 to estimate fatty acids and the oil content (OC) in fifteen Brassica napus genotypes. The quality parameters of oil include fatty acids (FA) and the oil content (OC), important trait differed significantly (p?0.05) amongst the Brassica species genotype. Among the genotypes, significant differences were noted for the fatty acids and the oil content (OC). In Brassica napus seeds oil content varies in between the range of 37.45–41.86% respectively. The saturated fatty acid (SFA) includes the Palmitic acid (PA) varied in between the range of 2.68–4.43% and oleic acid (OA) content results lied between 8.88-56.18% respectively. In linoleic acid (LA) and linolenic acid (LNA), presence of significant differences (p?0.05) was there. The content of linoleic acid (LA) lies in the range between 12.97- 17.98% respectively and linolenic acid (LNA) content varied from 13.41-23.42% respectively. The stearic acid (SA) content varied from1.20-1.66 respectively. Erucic acid, another essential trait, significant differences were noted amongst the Brassica species genotypes i.e. 12.96-48.80%. The minimum erucic acid (EA) content was noted in GSL-1 genotype and the genotypes namely RSPN-28 and CNH-13-2, EC552608, GSC-6 have also low EA content and the rest of the genotypes namely, RSPN-29, DGS-1, RSPN-25, CNH-11-7, CNH-11-13, RL-1359, HNS-1101, GSC-101, CNH-11-2, HNS-1102 have high erucic content. In fatty acids (FA) content, significant differences were observed in rapeseed-mustard. Desirable cultivars with higher yield and oil content are the chief objective of this concerned study to be further employed in the breeding program.

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