Spatial and Temporal Expression of Mutations for High Oleic Acid and Low Linolenic Acid Concentration in Ethiopian Mustard

Mutagens [e.g. EMS (ethyl methane sulphonate)] are sometimes used to generate variability in oil crops when variability is lacking in natural populations, or when strong interspecific crossing barriers prevent hybridization with relatives. It is imperative to conduct genetic studies on beneficial mutants before they can be effectively used in a breeding program. This study was conducted to study the inheritance, and characterize two "apparent" low linolenic acid EMS-induced McGregor flax mutants (E1929 and E1536) that appeared to be quite different from E1747, a linolenic acid deficient McGregor flax mutant which has been extensively studied. Diallele crosses involving 1) E1929, E1536, and McGregor, and 2) E1929, E1536, and E1747 were made. Gas chromatography analyses of fatty acids from seed oil of F1 and F2 populations indicated that E1929 resulted from a reduction in Δ15 desaturase activity, and that the control of the trait is by a single recessive gene. The E1929 gene appears to be allelic to one of the two genes possessed by E1747. E1929 was characterized as a "moderately low linolenic-high oleic acid mutant". E1536 could not be characterized with the available data. Key words: flax, fatty acids, linolenic, Linum

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Inheritance of Mid and High Oleic Acid Content in Ethiopian Mustard

Crop Science ◽

10.2135/cropsci2005.11.0399 ◽

2006 ◽

Vol 46 (6) ◽

pp. 2361-2367 ◽

Cited By ~ 1

Author(s):

Abdelghani Nabloussi ◽

José M. Fernández‐Martínez ◽

Leonardo Velasco

Keyword(s):

Oleic Acid ◽

Acid Content ◽

Oleic Acid Content ◽

High Oleic Acid ◽

High Oleic ◽

Ethiopian Mustard ◽

High Oleic Acid Content

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Molecular-assisted breeding for soybean with high oleic/low linolenic acid and elevated vitamin E in the seed oil

Molecular Breeding ◽

10.1007/s11032-020-01184-y ◽

2021 ◽

Vol 41 (1) ◽

Author(s):

Katherine Hagely ◽

Anji Reddy Konda ◽

Jeong-Hwa Kim ◽

Edgar B. Cahoon ◽

Kristin Bilyeu

Keyword(s):

Vitamin E ◽

Linolenic Acid ◽

Seed Oil ◽

High Oleic ◽

Low Linolenic Acid ◽

Low Linolenic

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The effect of temperature, seed colour and linolenic acid concentration on germination and seed vigour in flax

Canadian Journal of Plant Science ◽

10.4141/p98-100 ◽

1999 ◽

Vol 79 (3) ◽

pp. 315-319 ◽

Cited By ~ 5

Author(s):

G. Saeidi ◽

G. G. Rowland

Keyword(s):

Linolenic Acid ◽

Acid Concentration ◽

Negative Impact ◽

Effect Of Temperature ◽

Seed Colour ◽

Seed Vigour ◽

Yellow Seed ◽

Low Linolenic Acid ◽

Effects Of Temperature ◽

Low Linolenic

In Canada, the edible-oil type of flax (Linum usitatissimum) known as solin must have a linolenic acid concentration of less than 5% and a yellow seed colour. The yellow seed distinguishes solin from regular, high-linolenic acid linseed flax. Both altered fatty acid ratios and seed colour can have a negative impact on seed germination. The effects of temperature, seed colour and seed linolenic acid concentration on germination and seed vigour were studied in four populations that were near-isogenic for seed colour and linolenic acid level. For all populations, a germination temperature of 5 °C resulted in a significantly lower germination than at 10 or 15 °C. With one exception at 5 °C, where yellow seed had a greater germination than brown seed, there was no difference in germination frequency between brown and yellow seed. Also, there was no difference in germination between low and high linolenic acid seed with the exception of one population where low linolenic acid seeds had lower germination at 5 °C. In vigour tests however, yellow seed had lower seed vigour than brown seed in all populations. Low linolenic acid seeds had lower seed vigour than high linolenic acid seed in one population. Selection for seed vigour is essential in the breeding of solin varieties. Key words: Seed colour, linolenic acid, germination, seed vigour, flax

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