Prairie Thunder flax

DuguidS., D.; RashidK., Y.; KenaschukE., O.

doi:10.4141/cjps2013-195

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Flax lines with high linolenic acid (Duguid et al, 2014 ), low linolenic acid (Green and Marshall, 1984 ; Rowland, 1991 ; Dribnenki et al, 1996 ), and low cyanogenic glucosides (Duguid, personal communications) are some of the major achievements in linseed genetics and breeding. Whereas, the first two attributes are associated with fatty acid content, the last one refers to flax seed content in linustatin and neolinustatin, two cyanogenic glucosides that are toxic to mammals (EFSA, 2007 ).…”

Section: Introductionmentioning

confidence: 99%

Induced Mutagenesis in UGT74S1 Gene Leads to Stable New Flax Lines with Altered Secoisolariciresinol Diglucoside (SDG) Profiles

et al. 2017

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Flax secoisolariciresinol (SECO) diglucoside (SDG) lignan is an emerging natural product purported to prevent chronic diseases in humans. SECO, the aglycone form of SDG, has shown higher intestinal cell absorption but it is not accumulated naturally in planta. Recently, we have identified and characterized a UDP-glucosyltransferase gene, UGT74S1, that glucosylates SECO into its monoglucoside (SMG) and SDG forms when expressed in yeast. However, whether this gene is unique in controlling SECO glucosylation into SDG in planta is unclear. Here, we report on the use of UGT74S1 in reverse and forward genetics to characterize an ethyl methane sulfonate (EMS) mutagenized flax population from cultivar CDC Bethune and consisting of 1996 M2 families. EMS mutagenesis generated 73 SNP variants causing 79 mutational events in the UGT74S1 exonic regions of 93 M2 families. The mutation frequency in the exonic regions was determined to be one per 28 Kb. Of these mutations, 13 homozygous missense mutations and two homozygous nonsense mutations were observed and all were transmitted into the M3 and M4 generations. Forward genetics screening of the population showed homozygous nonsense mutants completely lacking SDG biosynthesis while the production of SMG was observed only in a subset of the M4 lines. Heterozygous or homozygous M4 missense mutants displayed a wide range of SDG levels, some being greater than those of CDC Bethune. No additional deleterious mutations were detected in these mutant lines using a panel of 10 other genes potentially involved in the lignan biosynthesis. This study provides further evidence that UGT74S1 is unique in controlling SDG formation from SECO and this is the first report of non-transgenic flax germplasm with simultaneous knockout of SDG and presence of SMG in planta.

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Section: Introductionmentioning

confidence: 99%

Induced Mutagenesis in UGT74S1 Gene Leads to Stable New Flax Lines with Altered Secoisolariciresinol Diglucoside (SDG) Profiles

et al. 2017

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“…d Protein content determined by near-infrared measurements calibrated against the Combustion Nitrogen Analysis Reference Method and expressed on a nitrogen × 6.25, dry whole seed, and dry defatted meal basis. maturing cultivar, equal to Prairie Thunder (described in Duguid et al 2014) and significantly earlier maturing than CDC Bethune (Table 1). CDC Plava has a medium seed size similar to CDC Bethune and significantly larger than Flanders (Table 2), medium height, and lodging resistance equivalent to Flanders (Table 1).…”

Section: Performancementioning

confidence: 95%

CDC Plava oilseed flax

et al. 2021

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CDC Plava oilseed flax (Linum usitatissimum L.), registered in 2015 by the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan, is targeted to the shorter growing season, Dark Brown, Black, Grey, and Dark Grey soil zones of the Northern Prairies. This cultivar has a high seed yield (106%) compared with cultivar (cv.) CDC Bethune and a medium maturity rating equal to cv. Prairie Thunder. It has medium oil content (47.0%), alpha-linolenic acid content (57.8%), seed size (6.1 g thousand seed weight, TSW), and good lodging resistance. It is resistant to North American races of rust caused by Melampsora lini, and moderately resistant to wilt caused by Fusarium oxysporum f. sp. lini.

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Pedigrees and genetic base of flax cultivars registered in Canada

et al. 2016

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Flax is an important oilseed crop with industrial, animal, and human nutrition uses. Breeding programs for linseed and fibre flax were initiated in Canada in the early 1900s. A total of 82 flax cultivars have been registered in Canada since 1910, including 24 cultivars introduced from foreign countries and 58 cultivars developed by Canadian breeders. This study collated pedigree data of Canadian flax cultivars and quantified their genetic base via pedigree analysis and coefficient of parentage (CP). A fairly high mean CP of 0.14 was observed between all registered cultivars; this value was even higher (0.23) when only the 46 cultivars released from 1981-2015 were considered. The registered cultivars traced back to 46 ancestors; 72% originated from foreign countries and contributed 83% of the genetic base of all cultivars, illustrating the dominant role played by foreign germplasm in the genetic improvement of Canadian flax. The top 11 ancestors contributed 70%-93% of the genetic base of modern flax cultivars released in the last three decades and formed the core gene pool of Canadian flax cultivars. The genetic base of Canadian cultivars is relatively narrow, although it has gradually expanded, especially in the last two decades. Broadening the genetic base through the introduction of new exotic germplasm is needed to invigorate the gene pool of Canadian flax breeding programs.Key words: flax, cultivar, pedigree, ancestor, genetic base, Canada.Résumé : Le lin est un important oléagineux utilisé à des fins industrielles ainsi que pour l'alimentation humaine et animale. Les premiers programmes d'hybridation visant à accroître la production de graines et de fibres de cette culture remontent au début du vingtième siècle. Quatre-vingt-deux variétés de lin ont été homologuées au Canada depuis 1910, ce qui comprend 24 cultivars de l'étranger et 58 créés par des améliorateurs canadiens. Cette étude rassemble les données généalogiques sur les variétés canadiennes et en quantifie la base génétique d'après leur ascendance et leur coefficient de parenté (CP). Les auteurs ont relevé un CP moyen relativement élevé (0,14) entre les variétés homologuées; le CP est encore plus élevé (0,23) quand on ne tient compte que des 46 cultivars homologués entre 1981 et 2015. Les variétés homologuées ont 46 ancêtres. Soixante-douze pour cent ont pour origine des pays étrangers et représentent 83 % de la base génétique des cultivars, signe du très grand rôle que le matériel génétique exotique a joué dans l'amélioration du lin canadien. Les onze principaux ancêtres ont fourni de 70 à 93 % de la base génétique des variétés de lin contemporaines, homologuées au cours des trois dernières décennies, et constituent le principal réservoir de gènes des cultivars canadiens. Les variétés canadiennes de lin se caractérisent par une base génétique assez étroite, bien que celle-ci se soit graduellement élargie, surtout au cours

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Prairie Thunder flax

Cited by 4 publications

References 3 publications

Induced Mutagenesis in UGT74S1 Gene Leads to Stable New Flax Lines with Altered Secoisolariciresinol Diglucoside (SDG) Profiles

Induced Mutagenesis in UGT74S1 Gene Leads to Stable New Flax Lines with Altered Secoisolariciresinol Diglucoside (SDG) Profiles

CDC Plava oilseed flax

Pedigrees and genetic base of flax cultivars registered in Canada

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