INHERITANCE OF OLEIC, LINOLEIC AND LINOLENIC ACIDS IN SEED OIL OF RAPESEED (BRASSICA NAPUS)

1975 ◽  
Vol 55 (1) ◽  
pp. 205-210 ◽  
Author(s):  
Z. P. KONDRA ◽  
P. M. THOMAS
Keyword(s):  
Linoleic Acid ◽  
Brassica Napus ◽  
Linolenic Acid ◽  
Acid Content ◽  
Genetic System ◽  
Linoleic Acid Content ◽  
Brassica Napus L ◽  
Partial Dominance ◽  
Effective Factors ◽  
Heritability Estimates

The fatty acid composition of rapeseed (Brassica napus L.) oil was investigated in parental, F1 and F2 plant populations of three crosses among three low erucic acid lines differing in oleic, linoleic and linolenic acid content. The F1 plant population values indicated that the oleic and linoleic acid contents were controlled by a simple additive gene system in one cross. In the other two crosses, partial dominance for high oleic and low linoleic content was observed. Dominance of low linolenic acid values was observed. The heritability estimates for oleic and linoleic acid were similar within each cross. The heritability estimates ranged from 53 to 78% for oleic, 40 to 84% for linoleic and 26 to 59% for linolenic. The estimates of minimum number of effective factors controlling oleic, and linoleic were similar within each cross. The number of effective factors ranged from 2 to 6 for oleic, 3 to 5 for linoleic, 0 to 4 for linolenic. The similarity of genetic behavior of oleic and linoleic acid content within each cross and the very high negative correlation between these components suggests that the relative ratios of oleic and linoleic acid content may be under the control of one genetic system.

scholarly journals Methyl jasmonate vapors affect the composition and peroxidation of major fatty acids in common buckwheat seedlings

2016 ◽  
Vol 69 (4) ◽  
Author(s):  
Józef Klocek ◽  
Magdalena Szwed ◽  
Danuta Koczkodaj ◽  
Joanna Mitrus ◽  
Marian Saniewski ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Stearic Acid ◽  
Methyl Jasmonate ◽  
Linolenic Acid ◽  
Acid Content ◽  
Linoleic Acid Content ◽  
Common Buckwheat ◽  
Fatty Acid Peroxidation

The effect of methyl jasmonate (MJ) vapors on the composition and peroxidation of major fatty acids in the organs of common buckwheat seedlings was investigated. The composition of fatty acids in the hypocotyl and cotyledons of seedlings changed significantly under exposure to MJ vapors in closed jars. Four-day exposure to MJ led to a significant reduction in the concentrations of stearic, linoleic, and linolenic acids in the hypocotyl, whereas oleic acid levels increased approximately 3.5-fold. A decrease in stearic acid levels and an increase in the content of linolenic acid were noted in cotyledons, whereas oleic acid levels decreased in roots. Seven-day exposure to MJ vapor caused a further reduction in stearic acid content and an increase in oleic acid and linoleic acid levels in the hypocotyl. At the same time, the linoleic acid content of roots and linolenic acid levels in cotyledons were doubled, but a 5-fold reduction in linolenic acid concentrations was observed in roots. Methyl jasmonate intensified fatty acid peroxidation in cotyledons after 4 and 7 days and in roots after 4 days of exposure. Peroxidation was inhibited in the hypocotyl and roots after 7 days. The noted changes in the composition and peroxidation of fatty acids are probably indicative of senescence in buckwheat seedlings under the influence of MJ. Senescence seems to proceed faster in cotyledons than in other organs of buckwheat seedlings.

SELECTION FOR OLEIC, LINOLEIC AND LINOLENIC ACID CONTENT IN F2 POPULATIONS OF RAPE

1976 ◽  
Vol 56 (4) ◽  
pp. 961-966 ◽  
Author(s):  
Z. P. KONDRA ◽  
T. W. WILSON
Keyword(s):  
Linolenic Acid ◽  
Acid Content ◽  
Seed Oil ◽  
Linoleic Acid Content ◽  
Linolenic Acid Content ◽  
Brassica Napus L ◽  
Selection For ◽  
Lower Magnitude ◽  
Two Populations ◽  
Made In

Single plant selections for high, intermediate, and low oleic, linoleic and linolenic acid content of rapeseed (Brassica napus L.) oil were made in the F2 generation of three crosses. The three parent strains produced seed oil practically free of eicosenoic and erucic acids and differed in oleic, linoleic and linolenic acid content. The F3 and F4 progeny were analyzed for fatty acid composition. Selection for low and high values of oleic and linoleic acid content was reasonably successful in two out of three crosses. Selection for extremes of linolenic acid content was unsuccessful in all three crosses. Regression analyses indicated high heritabilities for oleic and linoleic acids in two of three crosses but low heritabilities for linolenic acid in all three crosses. Correlations between oleic versus linoleic and oleic versus linolenic were negative and highly significant. Correlations between linoleic versus linolenic were of lower magnitude but positive and significant in all but two populations.

scholarly journals Transfer of omega-3 linolenic acid and linoleic acid to milk fat from flaxseed or Linola protected with formaldehyde

2001 ◽  
Vol 81 (4) ◽  
pp. 525-532 ◽  
Author(s):  
J. Goodridge ◽  
J. R. Ingalls ◽  
G. H. Crow
Keyword(s):  
Linoleic Acid ◽  
Linolenic Acid ◽  
Acid Content ◽  
Milk Fat ◽  
Linoleic Acid Content ◽  
Omega 3 ◽  
High Linoleic Acid ◽  
Low Level ◽  
High Level ◽  
Dietary Treatments

Four Holstein cows were randomly assigned to four treatments in a 4 × 4 Latin square design. The primary objective of this study was to measure the transfer and increased level of omega-3 fatty acid C18:3 in milk by feeding sup plemental protected fat from flax and, second, to measure the transfer and increase in level of C18:2 by feeding supplemental protected fat from linola. The four dietary treatments were total mixed rations (TMR) plus i) control-no added fat, ii) high levels of protected Linola containing high linoleic acid content, iii) low level of protected flax containing high linoleic acid content and iv) high levels of protected flax containing high linolenic acid content. Linola is a variety of Solin containing approximately 74% linoleic acid, which was developed from flax. These supplements were added to the diet as a top dress and provided 454 g fat (high level) from the protected Linola product, 187 g fat (low level) from the protected flax product and 410 g fat (high level) from the protected flax product. Treatments had no effect on feed intake, milk yield or milk content of fat, protein or solids not fat. Medium chain fatty acids, C12:0 to C16:0, were significantly lower (P < 0.05) in the milk of cows fed supplemental fat. Milk stearic acid (C18:0) was significantly greater in the milk fat from cows fed Linola vs. control, but was unaffected by other dietary treatments. Milk linoleic acid (C18:2) was significantly higher at 10.3% in the milk of cows fed the protected Linola vs. the control at 4.8%. Linolenic acid (C18:3) was not affected by feeding Linola, but was significantly greater in the milk of cows fed the high level of protected flax (6.4% vs. 0.8% in the control). This represents an eightfold increase, while the low level of protected flax diet increased C18:3 by 3.9-fold in milk fat. Supplementing dairy cow diets with a formaldehyde-treated flax product at acceptable levels of fat for high producing cows results in a milk fat high in omega-3-linolenic acid. Key words: Flaxseed, cow, milk, fatty acids, linoleic acid, linolenic acid

MATERNAL EFFECTS ON THE OLEIC, LINOLEIC, AND LINOLENIC ACID CONTENT OF RAPESEED OIL

1973 ◽  
Vol 53 (1) ◽  
pp. 221-225 ◽  
Author(s):  
P. M. THOMAS ◽  
Z. P. KONDRA
Keyword(s):  
Linolenic Acid ◽  
Acid Content ◽  
Seed Oil ◽  
Linoleic Acid Content ◽  
Linolenic Acid Content ◽  
Brassica Napus L ◽  
The Third ◽  
Genotype Effect ◽  
Cytoplasmic Effects ◽  
Maternal Genotype

The oleic, linoleic, and linolenic acid content of rapeseed (Brassica napus L.) oil was investigated in self- and cross-pollinated seed on parental lines and reciprocal F1 populations. The seed was derived from three strains of rapeseed that produce seed oil practically free of eicosenoic and erucic acids. A definite maternal genotype effect on the oleic and linoleic acid content of the cross-pollinated embryo was evident in two of three combinations. Embryo control for the quantities of these two fatty acids was indicated for the third combination. Both embryo and maternal genotype control of linolenic acid content was indicated. There were no cytoplasmic effects evident in the reciprocal F1 populations for any fatty acid in all three combinations.

scholarly journals A Study of Phospholipids and Galactolipids in Pollen of Two Lines of Brassica napus L. (Rapeseed) with Different Ratios of Linoleic to Linolenic Acid

1990 ◽  
Vol 93 (2) ◽  
pp. 418-424 ◽  
Author(s):  
D. Evan Evans ◽  
Joseph P. Sang ◽  
Xenophon Cominos ◽  
Neil E. Rothnie ◽  
R. Bruce Knox
Keyword(s):  
Brassica Napus ◽  
Linolenic Acid ◽  
Brassica Napus L
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