Investigation of photoperiod sensitivity of Linum usitatissimum L. Lines and effect of short-day conditions on their economically valuable traits

Domantovich, A. V.; Koshkin, V. A.; Brutch, N. B.; Matvienko, I. I.

doi:10.3103/s1068367412030056

Cited by 9 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, among insensitive genotypes which did not increase leaves number, variety Belosnezhka improved leaves number up to 34%. Summarizing these results with previous research ones (Domantovich et al 2012) we can say, that process of leaves formation in flax is really linked to that of flowering, but probably it is more sensitive to 12 hours daylight than flowering earliness and their interaction is not equal in different genotypes.…”

Section: Resultssupporting

confidence: 78%

Photoperiod Influence on the Stem Structure of Fibre Flax

Павлов

Nôžková

Šavrtková

et al. 2018

Agriculture (Pol'nohospodárstvo)

View full text Add to dashboard Cite

Plants of 13 fibre flax varieties were tested for their photosensitivity and differences of stems structure while grown in long and short daylight. It was detected that seven varieties did not change time of flowering in short 12 hours daylight in comparison with long 19 hours daylight. The extended diversity of fibre flax reactions on photoperiod changes and its relative independence of photosensitivity degree were found. Also, weak but significant correlation was found between photosensitivity coefficient and the degree of leaves number increase (r = 0.57). At the same time photo insensitive variety Belosnezhka improved leaves number up to 34%. Numbers of fibre bundles, their individual and total area on the stem cross section were not changed or reduced. Width, height, perimeter and shape of fibre bundles on a cross sections changed multidirectional. The areas of stem, its wooden part and cavity on a cross section showed no significant differences between plants grown in long and short day conditions. Evaluated flax characters were not strictly correlated with each other except those indicating the structure of fibre bundles. For breeding it is important that their relationships are not strongly influenced by the environment.

show abstract

Section: Resultssupporting

confidence: 78%

Photoperiod Influence on the Stem Structure of Fibre Flax

Павлов

Nôžková

Šavrtková

et al. 2018

Agriculture (Pol'nohospodárstvo)

View full text Add to dashboard Cite

show abstract

“…Cultivated flax ( Linum usitatissimum L.) is considered a facultative long day (LD) plant, because a short day (SD) photoperiod delays the onset of its reproductive stage [6]. A study that characterized early and late flowering flax genotypes, and conducted under both controlled and field conditions, found that genotypes differed in photoperiod response [7].…”

Section: Introductionmentioning

confidence: 99%

Photoperiod sensitivity of Canadian flax cultivars and 5-azacytidine treated early flowering derivative lines

et al. 2019

View full text Add to dashboard Cite

Background Early flowering and maturing flax ( Linum usitatissimum L . ) cultivars are better adapted than lines with a longer reproductive phase for the short growing season of the northern Canadian Prairies. We examined the role of long days (LD) and short days (SD) on the time taken to flower in five established flax cultivars and three mutant-derived F 10 lines. The photoperiod sensitivity of these eight different genotypes was determined using a reciprocal transfer experiment involving weekly transfers between LD and SD environments. Results The genotypes tested had varying degrees of photoperiod sensitivity and demonstrated reduced time to flowering if exposed to LD environments prior to a critical time point. The duration of each of the three phases of vegetative growth differed among the genotypes studied. Transfers from SD to LD shortened the vegetative stage, reduced time to flowering, and extended the reproductive phase in the genotypes studied. Mutant-derived lines RE1/2/3 flowered significantly earlier compared to CDC Sorrel, CDC Bethune, Flanders, Prairie Thunder, and Royal. Modelling of the flowering times indicated that transferring the cultivars from SD to LD increased the photoperiod sensitive time; however, different reproductive phases for mutant lines were not defined as parsimonious models were not identified. Expression of the putative flax homologs for CONSTANS ( CO ), FLOWERING LOCUS T ( FT ), and GIGANTEA ( GI ) was examined in the leaves of Royal and RE1/2/3 plants at 10, 15, 19 and 29 days after planting. Expression of putative FT homologs was detected in all three early-flowering lines but expression was negligible, or not detected, in Royal. Conclusions Models defining the three phases of reproductive development were established for the five cultivars studied; however, it was not possible to identify these phases for the three early flowering and photoperiod insensitive epimutant-derived lines. A putative flax homolog of FT , a key regulator of flowering time, is more highly expressed in RE plants, which may condition the day-length insensitivity in the early flowering ‘epimutant’ lines. Electronic supplementary material The online version of this article (10.1186/s12870-019-1763-5) contains supplementary material, which is available to authorized users.

show abstract

“…Previously it was found in many crops that the absence of photosensitivity could be used as an indicator of flowering earliness (Koshkin et al, 2003). But in contrast to other crops, it was discovered that flax had genotypes with all possible combinations of flowering earliness and photosensitivity degree, i. e. early flowering and low photosensitivity, late flowering and low photosensitivity, early flowering and high photosensitivity, late flowering and high photosensitivity (Brutch et al, 2008;Domantovich et al, 2012). It was detected in those experiments that line gc-109, being early in flowering under long-day conditions, was highly photosensitive.…”

Section: Introductionmentioning

confidence: 99%

“…It was detected in those experiments that line gc-109, being early in flowering under long-day conditions, was highly photosensitive. On the contrary, line gc375, selected from the Egyptian accession Giza purple (k6263), being rather late in flowering under long-day conditions, demonstrated relatively low photosensitivity (Domantovich at al., 2012). This line, in contrast to gc-109, had red-violet flowers.…”

Section: Introductionmentioning

confidence: 99%

The WF1 (White Flower 1) gene controlling the white color of petals and flowering time in lines from a mapping population of flax (Linum usitatissimum L.)

et al. 2019

Self Cite

View full text Add to dashboard Cite

Flax (Linum usitatissimum L.) is grown in different climatic zones as both a spring and winter crop. Adaptation to different growing conditions produced genotypes with different growth durations and degrees of photosensitivity. It was always of great importance for breeders to create varieties with rapid development, in particular, early-flowering ones. The evaluation of lines from the VIR flax genetic collection revealed a wide intraspecific diversity in the duration of growth phases, the number of leaves on the stem (physiological indicator of early flowering), and the degree of photosensitivity. Line gc-109, early flowering under the long-day conditions, but greatly photosensitive, was found to possess the wf1 (white flowers) gene, associated with early flowering and a small number of leaves. This line was crossed to the late-flowering but low-photosensitive line gc-375, which had reddish purple flowers. The analysis of segregation in F 2 held under the long (19 hours) and short (12 hours, daylength at the equator) day conditions showed that the number of leaves on the plant stem was associated with the flowering time and controlled by close genetic systems only under the long-day conditions. In addition, no relationship between the flowering time and petal color was found under the short-day conditions. Thus, different groups of genes are active in different light schedules. More than 200 lines of the 6th generation of inbreeding were obtained from the plants of the hybrid population. Their field testing under the long-day conditions showed that although the majority of the lines with white petals flowered early and had a small number of leaves, some of them bloomed later and were leafier. On the contrary, the early flowering and less leafy lines appeared among the lines with colored flowers. Therefore, it is reasonable to assume that a crossover between the gene participating in the control of early flowering, which came from the gc-109 line, and its wf1 gene occurred in meiosis of F 1. The linkage between the genes controlling early flowering and white petals suggests that flower color can serve as a marker of early flowering in the selection of early breeding material.

show abstract

Investigation of photoperiod sensitivity of Linum usitatissimum L. Lines and effect of short-day conditions on their economically valuable traits

Cited by 9 publications

References 0 publications

Photoperiod Influence on the Stem Structure of Fibre Flax

Photoperiod Influence on the Stem Structure of Fibre Flax

Photoperiod sensitivity of Canadian flax cultivars and 5-azacytidine treated early flowering derivative lines

The WF1 (White Flower 1) gene controlling the white color of petals and flowering time in lines from a mapping population of flax (Linum usitatissimum L.)

Contact Info

Product

Resources

About