Developments in fibrous flax and linseed breeding and cultivation

Pavelek, Miroslav; Prokopová, M. Vrbová; Ondráčková, Eliška; Ludvíková, Michaela; Griga, Miroslav

doi:10.1016/b978-0-12-818398-4.00019-0

Cited by 8 publications

(4 citation statements)

References 107 publications

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“…In rice, the wild abortive cytoplasmic male sterile line is widely used in China and has achieved great success, with an increased yield of 20% to 30% [34]. The F1 generation of interspecific hybridization of flax has a heterosis rate of 25% to 40%, indicating that the use of heterosis can improve the economic benefits of flax [35]. However, flax is a highly self-pollinating crop, which requires manual emasculation in conventional breeding, which can lead to flower damage and yield decline and is time consuming and labor intensive.…”

Section: Discussionmentioning

confidence: 99%

High-Quality Genome Assembly and Genome-Wide Association Study of Male Sterility Provide Resources for Flax Improvement

Zhao

Zuo

et al. 2023

Plants

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Flax is an economic crop with a long history. It is grown worldwide and is mainly used for edible oil, industry, and textiles. Here, we reported a high-quality genome assembly for “Neiya No. 9”, a popular variety widely grown in China. Combining PacBio long reads, Hi-C sequencing, and a genetic map reported previously, a genome assembly of 473.55 Mb was constructed, which covers ~94.7% of the flax genome. These sequences were anchored onto 15 chromosomes. The N50 lengths of the contig and scaffold were 0.91 Mb and 31.72 Mb, respectively. A total of 32,786 protein-coding genes were annotated, and 95.9% of complete BUSCOs were found. Through morphological and cytological observation, the male sterility of flax was considered dominant nuclear sterility. Through GWAS analysis, the gene LUSG00017705 (cysteine synthase gene) was found to be closest to the most significant SNP, and the expression level of this gene was significantly lower in male sterile plants than in fertile plants. Among the significant SNPs identified in the GWAS analysis, only two were located in the coding region, and these two SNPs caused changes in the protein encoded by LUSG00017565 (cysteine protease gene). It was speculated that these two genes may be related to male sterility in flax. This is the first time the molecular mechanism of male sterility in flax has been reported. The high-quality genome assembly and the male sterility genes revealed, provided a solid foundation for flax breeding.

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Section: Discussionmentioning

confidence: 99%

High-Quality Genome Assembly and Genome-Wide Association Study of Male Sterility Provide Resources for Flax Improvement

Zhao

Zuo

et al. 2023

Plants

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“…Ovary culture, the rate of callus induction was 77%, 77% and 76% obtained for M6, MN6 and MS media respectively. The callus induction efficiency on different culture mediums might be due to the quantity and proportion of NO 3 -/NH 4 + , which is an important factor in nitrogen uptake (Pavelek et al ,2020).…”

Section: The Effect Of Media Type On Callus Inductionmentioning

confidence: 99%

Factors Affecting Callus Induction from Anther and Ovary of Okra (Abelmoschus esculentus L.)

Ibrahim¹,

Abbas²,

Aldabbagh³

et al. 2023

IJARe

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Background: Okra [Abelmoschus esculentus (L.) Moench.] is a nutrient-rich vegetable crop widely grown in the tropics and sub-tropics mainly for its edible pods. The haploid technique has been used in plant breeding for the improvements of plants and to develop new varieties in relatively a short time. Hence, we have optimized several factors such as plant growth regulators (PGR), sucrose concentration, cold treatment, type of media and culture conditions for callus induction from the anther and ovary of okra (557 F1 hybrid). Methods: The flower buds of different sizes were collected to determine various stages of development and then subjected to cold pre-treatments. The explants were then cultured on various combinations of PGRs i.e., naphthyloxy acetic (NOA), Indole acetic acid (IAA), 2, 4-Dichlorophenoxy acetic acid (2, 4-D), Benzyl amino purine (BAP), isopentenyl adenine 2iP, Kinetin (KIN) and Thidiazuron (TDZ). Result: The optimum developmental stage of microspore for callus initiation was achieved from flower buds of okra and its size was about 11 mm long. Flower buds that emerged one week after the flowering showed significantly higher percentage of callus induction. The optimum stage for ovary and ovule culture were one or two days prior to anthesis and the flower buds stage was 35±1mm. In conclusion, our study investigated the effect of several factors that affects callus induction in okra and optimized cultured conditions for future haploid development for okra.

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“…Linseed varieties are focused on a high yield of seeds, which are characterized by the highest content of alpha-linolenic acid among plants [3,4]. Flax seeds contain 33-45% fat, and linseed oil over 50% of highly saturated fatty acids-mainly alpha-linolenic acid (omega 3) and linoleic acid.…”

Section: Introductionmentioning

confidence: 99%

Effective Use of Flax Biomass in Biorefining Processes

et al. 2023

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Flax is one of the few plants that are entirely a source of raw materials for further production. Promising directions for the use of flax biomass may be the production of bioenergy in the form of 2G biofuels and the production of “green” composites. The aim of the study is to compare the biomass of fiber flax, linseed and dual-purpose varieties of cultivated flax (Linum usitatissimum L.) susceptibility to the biorefining processes. In the first stage of the research, based on the results of yield structure features and biometric measurements of plants, the most optimal flax line was selected for the fiber flax, linseed and dual purpose. Next, the forms of flax were pretreated with sodium hydroxide (NaOH), the chemical composition was determined and SEM images were taken. The obtaining of bioethanol process SFF (simultaneous saccharification and fermentation) was carried out. In addition, biodegradable polymers were modified with flax biomass, shapes were prepared, and the rheological and mechanical properties, as well as microbiological activity of biocomposites, were determined. The highest concentration of ethanol (8.72 g·L−1) and the greatest susceptibility to mold fungi of the biocomposites were obtained for the fiber flax variety PET 16/20.

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Developments in fibrous flax and linseed breeding and cultivation

Cited by 8 publications

References 107 publications

High-Quality Genome Assembly and Genome-Wide Association Study of Male Sterility Provide Resources for Flax Improvement

High-Quality Genome Assembly and Genome-Wide Association Study of Male Sterility Provide Resources for Flax Improvement

Factors Affecting Callus Induction from Anther and Ovary of Okra (Abelmoschus esculentus L.)

Effective Use of Flax Biomass in Biorefining Processes

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