Use of desiccants to reduce frost damage in immature flax

1994 ◽  
Vol 74 (1) ◽  
pp. 121-123 ◽  
Author(s):  
G. H. Gubbels ◽  
D. M. Bonner ◽  
E. O. Kenaschuk
Keyword(s):  
Key Words ◽  
Linum Usitatissimum ◽  
Yield Loss ◽  
Seed Quality ◽  
Frost Damage ◽  
Glufosinate Ammonium ◽  
Linum Usitatissimum L ◽  
Damage Seed ◽  
Plant Samples

The desiccants diquat, glufosinate-ammonium, dimethipin and glyphosate were applied to flax when 44–84% of the capsules were green to reduce damage from subsequent frost. Beginning 3 d after desiccant application, plant samples were taken at 2–4 d intervals and exposed to a temperature at −20 °C overnight. Diquat application gave the most promising results, reducing the proportion of discolored seed and sometimes reducing loss of germinability, while resulting in a small yield loss compared with freezing of untreated plants. Key words: Flax, Linum usitatissimum L., desiccants, frost damage, seed quality, germination

scholarly journals Effect of frost injury on quality of flax seed

1994 ◽  
Vol 74 (2) ◽  
pp. 331-333 ◽  
Author(s):  
G. H. Gubbels ◽  
D. M. Bonner ◽  
E. O. Kenaschuk
Keyword(s):  
Linum Usitatissimum ◽  
Seed Quality ◽  
Frost Damage ◽  
Laboratory Studies ◽  
Flax Seed ◽  
Linum Usitatissimum L ◽  
Damage Seed ◽  
Frost Injury ◽  
Normal Seed

In field and laboratory studies, flax (Linum usitatissimum L.) was frozen when 40–60% of the capsules were still green. Seed visibly frozen at this stage were of lower weight and density, darker in color, and lower in germinabihty than the fraction of the sample that was not visibly frozen. Also, oil color was darker, oil and protein concentrations and stearic and oleic acid levels were lower, and palmitic, linoleic and linolenic acid levels and iodine values were higher in the frozen than the normal seed. Key words: Flax, Linum usitatissimum, frost damage, seed quality, germination

Effect of time of swathing and desiccation on plant drying, seed color and germination of flax

1993 ◽  
Vol 73 (4) ◽  
pp. 1001-1007 ◽  
Author(s):  
G. H. Gubbels ◽  
D. M. Bonner ◽  
E. O. Kenaschuk
Keyword(s):  
Seed Germination ◽  
Key Words ◽  
Linum Usitatissimum ◽  
Field Studies ◽  
Seed Color ◽  
Glufosinate Ammonium ◽  
Linum Usitatissimum L ◽  
Plant Components

In field studies conducted between 1988 and 1990, flax (Linum usitatissimum L.) was swathed or desiccated with diquat, glufosinate-ammonium or glyphosate at various times between the 0 and 100% brown capsule stages to determine the effects on drying of plant components, seed discoloration and germination. Leaf and capsule browning were complete about 1 wk after application of diquat and glufosinate-ammonium and about 2 wk after application of glyphosate. Stem browning was variable from one application to another, but was usually adequate for harvesting 1–2 wk after application of diquat and glufosinate-ammonium and 3 to 4 wks after application of glyphosate. Diquat gave the most rapid stem browning and glyphosate the slowest. In most cases, swathing and application of diquat or glufosinate-ammonium resulted in capsule moisture low enough for harvest 2 wks after treatment. Drying of capsules following glyphosate application was less rapid. Early applications of glufosinate-ammonium sometimes resulted in darker brown seed. Glyphosate applied before all capsules were mature reduced seed germination. Key words: Flax, Linum usitatissimum L., swathing, desiccation, seed color, germination

Frost tolerance of maturing flax

1993 ◽  
Vol 73 (1) ◽  
pp. 167-170
Author(s):  
D. M. Bonner ◽  
G. H. Gubbels ◽  
E. O. Kenaschuk
Keyword(s):  
Key Words ◽  
Linum Usitatissimum ◽  
Frost Damage ◽  
Frost Tolerance ◽  
Immature Seed ◽  
Laboratory Studies ◽  
Linum Usitatissimum L ◽  
Considerable Damage

In field and laboratory studies, frost damage to immature flax (Linum usitatissimum L.) increased as temperatures fell below −2 °C. In general, considerable damage occurred where temperatures dropped to the −3 to −5 °C range for immature seed, −4 to −5 °C for leaves, pedicels and capsule tissue, and −6 to −7 °C for stems. Key words: Flax, Linum usitatissimum L., frost tolerance

Prairie Thunder flax

2014 ◽  
Vol 94 (2) ◽  
pp. 445-449 ◽  
Author(s):  
S. D. Duguid ◽  
K. Y. Rashid ◽  
E. O. Kenaschuk
Keyword(s):  
Fusarium Oxysporum ◽  
Linum Usitatissimum ◽  
Seed Quality ◽  
Agronomic Traits ◽  
Research Station ◽  
Linum Usitatissimum L ◽  
The Cross ◽  
Made In

Duguid, S. D., Rashid, K. Y. and Kenaschuk, E. O. 2014. Prairie Thunder flax. Can. J. Plant Sci. 94: 445–449. Prairie Thunder, medium-maturing oilseed flax (Linum usitatissimum L.), was released in 2006 by Agriculture and Agri-Food Canada, Morden Research Station, Morden, Manitoba. Developed from the cross AC Watson/FP1043 made in 1995, Prairie Thunder was evaluated in the Flax Cooperative Trials (2002–2004) before being registered in 2006. Prairie Thunder's desirable combination of improved agronomic traits, seed quality and superior wilt (Fusarium oxysporum Schlecht. f. sp. lini (Bolley) Snyder & Hansen) resistance should make this cultivar useful for producers and the flax industry.

AC Emerson flax

1996 ◽  
Vol 76 (3) ◽  
pp. 483-485 ◽  
Author(s):  
E. O. Kenaschuk ◽  
K. Y. Rashid ◽  
G. H. Gubbels
Keyword(s):  
Key Words ◽  
Linum Usitatissimum ◽  
Oil Quality ◽  
Calcareous Soils ◽  
Research Centre ◽  
Linum Usitatissimum L ◽  
Melampsora Lini ◽  
Early Maturing ◽  
Cultivar Description ◽  
Moderately Resistant

AC Emerson, a medium-early maturing oilseed flax (Linum usitatissimum L.), was released by Agriculture and Agri-Food Canada, Agri-Food Diversification Research Centre, Morden, Manitoba, in 1994. The cultivar has high oil quality, medium-large seed size and was high yielding in both early and late seeding tests in the Black and the Brown Soil zones of Manitoba and Saskatchewan. Because of its chlorosis tolerance, it is particularly well suited to the calcareous soils of Manitoba. It is immune to North American races of rust caused by Melampsora lini and moderately resistant to wilt caused by Fusarium oxysporum f. sp. lini. Key words: Flax, oilseed, Linum usitatissimum L., cultivar description

An EMS-induced low-linolenic-acid mutant in McGregor flax (Linum usitatissimum L.)

1991 ◽  
Vol 71 (2) ◽  
pp. 393-396 ◽  
Author(s):  
G. G. Rowland
Keyword(s):  
Fatty Acid ◽  
Key Words ◽  
Linolenic Acid ◽  
Linum Usitatissimum ◽  
Ethyl Methanesulphonate ◽  
Double Mutation ◽  
Linum Usitatissimum L ◽  
Half Seed ◽  
Low Linolenic Acid ◽  
Low Linolenic

McGregor flax (Linum usitatissimum L.) seed was treated with ethyl methanesulphonate (EMS) and the resulting M1, M2, M3 and M4 progeny were screened for linolenic acid mutants, using the half-seed technique. A stable low-linolenic acid (2%) mutant was found in the M4. The low linolenic character is controlled by recessive alleles at two independent loci, apparently the result of a rare double mutation. Key words: EMS, mutation, flax, Linum usitatissimum, fatty acid

SOME OBSERVATIONS ON POLYEMBRYONY IN CROSSES BETWEEN TWINNING AND NONTWINNING LINES OF FLAX

1986 ◽  
Vol 66 (4) ◽  
pp. 819-824 ◽  
Author(s):  
G. G. ROWLAND ◽  
L. A. WEERASENA
Keyword(s):  
Key Words ◽  
Doubled Haploid ◽  
Linum Usitatissimum ◽  
Recurrent Selection ◽  
Female Parent ◽  
Selection Program ◽  
Doubled Haploid Lines ◽  
Linum Usitatissimum L ◽  
Significant Difference ◽  
Twinning Frequency

A recurrent selection program was initiated using the polyembryony character found in flax (Linum usitatissimum L.) to produce haploids that could then be used to create doubled haploid lines. Observations from this programme show that using the haploid member of a twin seedling as the female parent in crosses to the diploid male is not as efficient as using its diploid twin as the female parent. Previous work has suggested that in lines carrying the polyembryony character, bolls containing fewer than 10 seeds, which is the maximum number in flax, were more likely to contain a seed that would give rise to a twin seedling. In this study twin seedlings were obtained from seed of bolls containing from 1 to 10 seeds, and bolls with 10 seeds were often as good a source of twin seedlings as those with nine seeds or fewer. There was no significant difference in the twinning frequency of F2 seed of crosses between twinning and nontwinning lines (range 0.8–1.9%) but these same crosses were significantly different in twinning frequency in doubled haploid lines (range 1.1–7.9%). The twinning frequency of individual doubled haploid lines within crosses varied from 0.4 to 20.3%.Key words: Flax, haploid breeding, polyembryony, Linum usitatissimum

Prairie Grande flax

2014 ◽  
Vol 94 (4) ◽  
pp. 791-795 ◽  
Author(s):  
S. D. Duguid ◽  
K. Y. Rashid ◽  
E. O. Kenaschuk
Keyword(s):  
Disease Resistance ◽  
Protein Content ◽  
Linum Usitatissimum ◽  
Seed Quality ◽  
Research Station ◽  
Linum Usitatissimum L ◽  
Early Maturing ◽  
Made In

Duguid, S. D., Rashid, K. Y. and Kenaschuk, E. O. 2014. Prairie Grande flax. Can. J. Plant Sci. 94: 791–795. Prairie Grande, a medium-early maturing oilseed flax (Linum usitatissimum L.), was released in 2007 by Agriculture and Agri-Food Canada, Morden Research Station, Morden, Manitoba. Developed from a cross of AC Watson/CI3395 made in 1996, Prairie Grande was evaluated in the Flax Cooperative Trials in (2003–2005) before being registered in 2007. Prairie Grande's desirable combination of significantly higher yield with significantly earlier maturity (3.1 d earlier than Flanders), along with seed quality similar to Flanders, but with higher protein content in the meal and a good disease resistance package, should make it a useful cultivar for producers in the northern prairies of Canada and the flax industry.

AAC Bravo flax

2014 ◽  
Vol 94 (1) ◽  
pp. 153-156 ◽  
Author(s):  
S. D. Duguid ◽  
K. Y. Rashid ◽  
H. Busch ◽  
H. Schaupp
Keyword(s):  
Disease Resistance ◽  
Seed Size ◽  
Linum Usitatissimum ◽  
Seed Quality ◽  
Agronomic Traits ◽  
Research Station ◽  
Large Seed ◽  
Linum Usitatissimum L ◽  
Made In

Duguid, S. D., Rashid, K. Y., Busch, H. and Schaupp, H. 2014. AAC Bravo flax. Can. J. Plant Sci. 94: 153–156. Bravo, a medium maturing oilseed flax (Linum usitatissimum L.) was released in 2012 by Agriculture and Agri-Food Canada, Morden Research Station, Morden, Manitoba. Developed from the Flanders/Pacific made in 1995, AAC Bravo was evaluated in the Flax Cooperative Trials (2008–2010) before being registered in 2012. AAC Bravo's desirable combination of agronomic traits, particularly its significantly large seed size as compared with other commercially available cultivars, seed quality and disease resistance, should make it a useful cultivar for producers and the flax industry.

EFFECTS OF VOLUNTEER WHEAT AND BARLEY ON THE GROWTH AND YIELD OF FLAX

1990 ◽  
Vol 70 (4) ◽  
pp. 1115-1122 ◽  
Author(s):  
LYLE FRIESEN ◽  
IAN N. MORRISON ◽  
GEORGE MARSHALL ◽  
WESLEY ROTHER
Keyword(s):  
Linum Usitatissimum ◽  
Field Experiments ◽  
Yield Loss ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Regression Equations ◽  
Nonlinear Regression Analysis ◽  
Hordeum Vulgare L ◽  
Linum Usitatissimum L ◽  
Intermediate Density

Field experiments were conducted in 1982 and 1983 to determine the effects of increasing densities (0–70 plants m−2) of volunteer wheat (Triticum aestivum L. Neepawa) and barley (Hordeum vulgare L. Bonanza) on the growth and seed yield of flax (Linum usitatissimum L. Dufferin). Rectangular hyperbolic models were fitted to data using nonlinear regression analysis. Results indicated that both volunteer cereals severely reduced flax biomass and yield, with volunteer barley interference causing greater losses than volunteer wheat at equivalent densities. From the regression equations it was calculated that an intermediate density of 30 volunteer wheat plants m−2 reduced the yield of flax by 49% in 1982 and 53% in 1983, whereas an equivalent density of volunteer barley plants reduced flax yields by 56% in 1982 and 67% in 1983.Key words: Competition, flax, volunteer wheat, volunteer barley, rectangular hyperbola, yield loss

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