Variation for oil quantity and quality in linseed (Linum usitatissimum)

1981 ◽  
Vol 32 (4) ◽  
pp. 599 ◽  
Author(s):  
AG Green ◽  
DR Marshall

Significant variation in seed weight, oil content and fatty acid composition was found both between and within varieties in a diverse collection of 214 Linum usitatissimum accessions. Parent-offspring correlation analysis indicated that at least a proportion of the variation within several varieties was due to genetic heterogeneity. Lines were identified that had up to 46 % oil, compared with the 40 % present in the current Australian cultivar, Glenelg. High oil content was consistently associated with larger seeds. Oleic acid and linolenic acid varied between 13.3 and 25.2%, and 45.5 and 64.2 %, respectively, and were strongly negatively correlated within and between all varieties tested. The level of variation is insufficient to develop lines with less than 5 % linolenic acid by conventional hybridization and selection techniques. It is concluded that mutation breeding and interspecific hybridization are more promising approaches to the breeding of linseed genotypes containing low levels of linolenic acid.

1994 ◽  
Vol 74 (1) ◽  
pp. 129-131 ◽  
Author(s):  
Robert C. Roy ◽  
Peter H. White ◽  
Alex F. More ◽  
John G. Hendel ◽  
Robert Pocs ◽  
...  

The influence of transplanting time on the growth of evening primrose (Oenothera biennis L.) was investigated for 3 yr. Delaying transplanting reduced the yield of seed in two of these years. The amount of oil in the seed was not influenced by time of transplanting, and only in one year did the γ-linolenic acid content of the oil decrease with delays in transplanting. Key words: Evening primrose, transplanting date, oil content, γ-linolenic acid


HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1082D-1082 ◽  
Author(s):  
Kyoung-Shim Cho ◽  
Hyun-Ju Kim ◽  
Jae-Ho Lee ◽  
Jung-Hoon Kang ◽  
Young-Sang Lee

Fatty acid is known as a physiologically active compound, and its composition in rice may affect human health in countries where rice is the major diet. The fatty acid composition in brown rice of 120 Korean native cultivars was determined by one-step extraction/methylation method and GC. The average composition of 9 detectable fatty acids in tested rice cultivars were as followings: myristic acid; 0.6%, palmitic acid; 21.2%, stearic acid; 1.8%, oleic acid; 36.5%, linoleic acid; 36.3%, linolenic acid; 1.7%, arachidic acid; 0.5%, behenic acid; 0.4%, and lignoceric acid; 0.9%. Major fatty acids were palmitic, oleic and linoleic acid, which composed around 94%. The rice cultivar with the highest linolenic acid was cv. Jonajo (2.1%), and cvs. Pochoenjangmebye and Sandudo showed the highest composition of palmitic (23.4%) and oleic acid (44.8%), respectively. Cultivar Pochuenjangmebye exhitibed the highest composition of saturated fatty acid (28.1%), while cvs. Sandudo and Modo showed the highest mono-unsaturated (44.8%) and poly-unsaturated (42.4%) fatty acid composition, respectively. The oleic acid showed negative correlation with palmitic and linoleic acid, while positive correlation between behenic and lignoceric acids was observed.


2021 ◽  
Author(s):  
А.А. Golova ◽  
◽  
L.А. Gorlova ◽  

Middle content of oleic acid in high oleic lines of winter rapeseed in hot 2019 was maximal and equal to 81.2 %, and minimal one – in a cool 2017 – 75.3 %. Studying of influence of day and night air temperatures in a period of seed formation (19.0–32.4/10.6–24.0 °С) on oil and glucosinolate contents in seeds of high oleic winter rapeseed did not demonstrated any significant dependences between these traits. There were not observed any important relations between amount of precipitations in a period of seed formation and oil content, fatty-acid composition of oil and glucosinolatec content in high oleic winter rapeseed.


2001 ◽  
Vol 49 (1) ◽  
pp. 95-98
Author(s):  
M. Hajós-Novák ◽  
F. Kőrösi

Mutant soybean germplasm was developed from a Carpathian-Ukrainian local variety, using 100–300 Gy chronic gamma irradiation to obtain lines with improved oil and/or protein content. The mutant germplasm was developed by the pedigree method. Selection for high oil and protein content started in the M3 generation. Plants with 24.1 and 23.6% oil content in the seeds were detected in the M4 generation. There were negative, moderate (r = –0.4) and significant (P<0.1 and P<0.01) correlations between the oil content and the 1000-seed weight in both the M3 and M4 generations. The fatty acid composition in the seeds of plants with high oil content was favourable. It is suggested that selection for oil content in the seeds should be started in the M4 generation. Due to the limited genetic variation for protein content no mutant genotypes with higher protein content than that of the control could be identified.


2000 ◽  
Vol 28 (6) ◽  
pp. 581-582 ◽  
Author(s):  
N. Kaushik ◽  
A. Agnihotri

Rapeseed-mustard is one of the most economically important oilseed crops in India. Speciality oils having high amounts of a specific fatty acid are of immense importance for both nutritional and industrial purposes. Oil high in oleic acid has demand in commercial food-service applications due to a long shelf-life and cholesterol-reducing properties. Both linoleic and linolenic acids are essential fatty acids; however, less than 3% linolenic acid is preferred for oil stability. High erucic acid content is beneficial for the polymer industry, whereas low erucic acid is recommended for food purposes. Therefore, it is important to undertake systematic characterization of the available gene pool for its variable fatty acid profile to be utilized for specific purposes. In the present study the Indian rapeseed-mustard germplasm and some newly developed low-erucic-acid strains were analysed by GLC to study the fatty acid composition in these lines. The GLC analysis revealed that the rapeseed-mustard varieties being commonly grown in India are characterized by high erucic acid content (30–51%) in the oil with low levels of oleic acid (13–23%). However, from among the recently developed low-erucic-acid strains, several lines were identified with comparatively high oleic acid (60–70%), moderate to high linoleic acid (13–40%) and low linolenic acid (< 10%) contents. Work is in progress at TERI (New Delhi, India) to utilize these lines for development of strains with particular fatty acid compositions for specific purposes.


1970 ◽  
Vol 16 (12) ◽  
pp. 1161-1164 ◽  
Author(s):  
J. L. Sumner

The fatty acid compositions of the total, neutral, and polar lipids of Blastocladiella emersonii have been determined. Major fatty acids were palmitic, oleic, linoleic, γ-linolenic, and arachidonic acid. Polar lipid contained a higher proportion of linoleic, γ-linolenic, and arachidonic acid than did neutral or total lipids, whilst neutral lipid had a high proportion of palmitic and oleic acid. In addition to γ-linolenic acid, α-linolenic acid was also present; this is the first occasion that both isomers have been demonstrated in the same fungus, and the phylogenetic possibilities of this finding are discussed.


2012 ◽  
Vol 57 (3) ◽  
pp. 135-142
Author(s):  
Dmitriy Vinogradov ◽  
Aleksey Polyakov ◽  
Aleksey Kuntsevich

The influence of the level of mineral nutrition and rate of seed sowing on yield and fatty acid composition of linseed (Linum usitatissimum L.) in the Non-chernozem zone of Russia was studied. It was shown that the level of mineral fertilizers N - 90, P2O5 - 60, and K2O - 60 kg/ha under the rate of sowing of 8 million seeds/ha provided maximum seed yield of 1.94 t/ha. A clear correlation between oil content and rate of sowing has not been established. Under an increasing level of mineral nutrition, oil content was slightly increased. The composition of oil was slightly changed under the influence of the studied factors.


2010 ◽  
Vol 14 ◽  
pp. 105-112
Author(s):  
J.M. Townshend ◽  
J.M. Boleyn

Linseed (Linum usitatissimum) is grown in New Zealand for both oil extraction and baking purposes. Two new brown linseed cultivars 'Bilton' and 'Biltstar', both of Dutch origin, were trialled in the Ashburton district in 2006-07 and 2007-08, to evaluate their suitability for seed and oil production. They were compared with the current industry standard cultivar 'Hinu' and the more recently released cultivar 'Juliet'. There was a large range in yields among sites and seasons. When meaned across sites, cultivar yields ranged from 2,596 to 3,012 kg/ha. Bilton and Juliet produced significantly higher yields than Hinu, while Biltstar was intermediate. Thousand seed weight ranged from 5.76 g to 7.65 g with Biltstar producing the heaviest seed. There was a significant cultivar effect for both oil content and α-linolenic acid (ALA) content. Biltstar and Juliet produced the highest oil content (40.7% and 40.3% respectively). ALA levels were highest in Biltstar and Hinu (62.1% and 60.9% of total fatty acids respectively). There was no significant difference in oil yield (kg oil/ha) among cultivars. Four cultivars may have a place in Canterbury for oilseed production depending on end use and grower payment conditions. Keywords: Linum usitatissimum, flaxseed, seed yield, oil content, α-linolenic acid, thousand seed weight


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