scholarly journals Influences of Some Environmental Conditions upon the Growth and Development of the Flax Plant, Linum usitatissimum L.

1964 ◽  
Vol 32 (3) ◽  
pp. 229-232 ◽  
Author(s):  
Yukio YANAGISAWA
Author(s):  
Inga Stafecka ◽  
Dace Grauda ◽  
Veneranda Stramkale

Flax (Linum usitatissimum L) yield of stem and seeds and them quality is influenced by a number of harmful diseases but investigation about pathogens in recent years have not been done in Latvia. Each stage of development of disease is important in the pathogen life cycle and requires certain condition. Goal of this study have identify possibilities of the pathogens and were assess disease severity depending on the genotypes on flax in variable environmental conditions. The resistance to the diseases for 24 flax genotypes and standard variety ‘Vega 2’ were evaluated. The field trials have been carried out over the period from 2015 to 2016 at the Research Centre of Priekuli, part of Vilani in Latgale. Disease progress was measured every week, and for each treatment, severity of diseases index and the area under the disease progressive curve (AUDPC) were calculated. The flow cytometry method for detection of flax pathogens was developed. The Fusarium avenaveum was dominating disease and statically significant in both vegetation periods. In 2015 were identified statically significant (p


2020 ◽  
Vol 64 (11) ◽  
pp. 121-126
Author(s):  
Irina A. Larskaya ◽  
◽  
Farit A. Abdrahimov ◽  
Evgenia O. Fedina ◽  
◽  
...  

The effect of tunicamycin, the inhibitor of protein N-glycosylation, on the root and hypocotyl growth of flax seedlings (Linum usitatissimum L.) was studied. It is known that tunicamycin inhibits the first stage of the formation of the oligosaccharide precursor, which is necessary to initiate the synthesis of N-glycoproteins by inhibiting the activity of N-acetylglucosamine phosphotransferase. The blocking by tunicamycin (25 μM) the early stages of N-glycoprotein formation induced growth inhibition in flax seedlings depending on the age of the plants. So one-day-old seedlings, tunicamycin significantly suppressed the growth of hypocotyls and main roots but the inhibitory effect of the antibiotic on the roots was more significant. The tunicamycin effect on the hypocotyl growth began to appear 60 h after using the inhibitor, while the roots completely stopped growth after 30 h. In two-day-old tunicamycin-treated seedlings, hypocotyl elongation proceeded at approximately the same rate as in untreated plants and suppression of root growth was manifested only for 60 h. The vital staining of ER (Endoplasmic Reticulum)-structures of control and tuncamycin-treated one-day-old flax seedlings by using of ER-TrackerTM Green dye revealed the growth inhibition was accompanied by the changes in the ER morphology. These results indicate the accumulation of misfolded proteins in the ER-lumen, due to an interruption in N-glycosylation of proteins. Thus, it is obvious that the process of N-glycosylation is necessary for the normal growth and development of flax seedlings, and the plant phenotype will be determined by a change in the status of N-glycosylation of specific glycoproteins.


2009 ◽  
Vol 7 (4) ◽  
pp. 14-22
Author(s):  
Svetlana I Vakula ◽  
Lidia V Koren ◽  
Olga S Ignatovets ◽  
Vladimir V Titok ◽  
Lubov V Khotyleva

The article describes differences in a response of linseed cultivars of a different genetic and geographical origin to a set of ecological factors. Variability in productivity traits was revealed to be determined in most cases by a genotype and its interaction with growing conditions. The genotype and environmental conditions exert an equal effect on oil accumulation in seeds and its qualitative composition. Based on the data obtained from the linseed collection, the most ecologically stable genotypes, displaying steadily high seed productivity in combination with high content and quality of oil, were selected.


1978 ◽  
Vol 58 (2) ◽  
pp. 303-309 ◽  
Author(s):  
G. H. GUBBELS

Three flax (Linum usitatissimum L.) cultivars, Linott, Noralta and Nored, were grown in the field in 1971, 1972 and 1973 at seeding rates of 100, 250, 400, 550, 700, 850, and 1,000 seeds/m2. Certain interactions between cultivar and seeding rate occurred but none was consistent from year to year. Soil moisture and weather played an important role in yearly yield patterns. Lodging in 1973 reduced yield, weight per seed and oil percentage. The stage of maturity when wind and heavy rain occurred markedly affected the degree of lodging. Lodging increased with increase in seeding rate and corresponded to a decrease in the number of basal branches per plant. Nored branched more profusely than Noralta and Linott. Seed yields in 1971 and 1972 were relatively stable over a fourfold increase in seeding rate, showing the remarkable ability of the flax plant to compensate for low plant stands.


Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2616
Author(s):  
Liubov V. Povkhova ◽  
Nataliya V. Melnikova ◽  
Tatiana A. Rozhmina ◽  
Roman O. Novakovskiy ◽  
Elena N. Pushkova ◽  
...  

As a result of the breeding process, there are two main types of flax (Linum usitatissimum L.) plants. Linseed is used for obtaining seeds, while fiber flax is used for fiber production. We aimed to identify the genes associated with the flax plant type, which could be important for the formation of agronomically valuable traits. A search for polymorphisms was performed in genes involved in the biosynthesis of cell wall components, lignans, fatty acids, and ion transport based on genome sequencing data for 191 flax varieties. For 143 of the 424 studied genes (4CL, C3′H, C4H, CAD, CCR, CCoAOMT, COMT, F5H, HCT, PAL, CTL, BGAL, ABC, HMA, DIR, PLR, UGT, TUB, CESA, RGL, FAD, SAD, and ACT families), one or more polymorphisms had a strong correlation with the flax type. Based on the transcriptome sequencing data, we evaluated the expression levels for each flax type-associated gene in a wide range of tissues and suggested genes that are important for the formation of linseed or fiber flax traits. Such genes were probably subjected to the selection press and can determine not only the traits of seeds and stems but also the characteristics of the root system or resistance to stresses at a particular stage of development, which indirectly affects the ability of flax plants to produce seeds or fiber.


Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
H El-Askary ◽  
S El Zalabani ◽  
RS El-Din ◽  
MY Issa ◽  
RR Hegazy ◽  
...  

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