Influence of alcoholic extracts from <i>Helianthus annnus</i> L. roots on the photosynthetic activity of <i>Sinapis alba</i> L. cv. Barka plants

et al. 2020

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The allelopathic potential of medicinal plant Filipendula vulgaris Moench, originated from two natural habitats: calcareous grasslands and humid meadows, was investigated using radish (Raphanus sativus L. var. radicula Pers.) as a model plant. Suppression influence of aqueous extracts at concentrations: 1%, 5%, 10%, obtained separately from under and aboveground parts of the species, was studied testing germination capacity, biomass and biometry of seedling, and electrolyte leakage. Additionally, two cultivars of the radish were used to test the sensitivity of frequently used plant in the laboratory tests. This study revealed the inhibiting effect of high concentration aqueous extracts from F. vulgaris organs on the germination of radish. It was significant for seed vigour index, speed emergence, germination stress tolerance index, and mean germination time. However, the stimulating effect of 1% of aqueous extracts from dropwort roots and shoots on the germination indexes was documented. Similarly, low concentration extracts had a positive effect on seedling elongation which was visible in biometric analyses and inhibition percentage index but it was not so obvious in the biomass analyses. In general, the aboveground extracts from dropwort grown on calcareous grassland demonstrated higher allelopathic potential than extracts from underground parts and meadow habitat.

Section: Discussionmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Allelopathic influence of medicinal plant Filipendula vulgaris Moench on germination process

Fecowicz

Możdżeń

et al. 2020

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“…This is usually manifested by inhibiting seed germination, reducing the amount of biomass produced, reducing their size, disorganising of metabolic processes in plants, etc. With a strong allelopathic interaction, even individuals die from a given type of community (Hierro et al, 2003;Zandi et al, 2018Zandi et al, , 2019Puła et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…In this experiment, clover seedlings were characterised by different content of chlorophylls; the most negative effects were observed with macerate and infusion (Figure 3). Usually, when the concentration of allelopathic compounds increases in extracts, there is a significant reduction in the chlorophyll content (Puła et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Allelopathic effect of invasive Canadian goldenrod (Solidago canadensis L.) on early growth of red clover (Trifolium pratense L.)

Zandi

Stachurska-Swakoń

et al. 2020

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Solidago canadensis belongs to highly invasive species in Europe, it is established in ruderal, semi-natural and natural communities. To test the traits related to invasiveness, the experiment with the potential of allelopathic compounds produced by the species was conducted. The aqueous extract from the goldenrod leaves was used to examine the germination and early stages of development of Trifolium pratense, the species as an example of fodder plant common in meadows and pastures. Three types of aqueous extract were used: decoction, infusion, and macerate. All extracts of Canadian goldenrod had a negative influence on the germination process of red clover, however, the effect changed in time and type of extract. The most inhibiting influence was documented for the macerate type of aqueous extract. Similarly, the negative influence of macerate was the highest for the length and weight of the seedlings, the content of chlorophyll a and b, and electrolyte leakage. As the procedure of obtaining the macerate is the most like the process of natural extraction of allelopathic substances in nature, there is the practical conclusion to remove the moved biomass of the goldenrod during the restoration process of areas colonised by the species.

“…In the last decade, there is a growing interest to estimate the allelopathic potential of different group of plants, e.g. medicine plants as they contain bioactive compounds (Fujii et al, 2003;Amini et al, 2014;Puła et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Germination and growth of radish under influence of nipplewort aqueous extracts

Możdżeń

Stachurska-Swakoń

et al. 2021

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The conducted experiment was aimed at determining the effect of aqueous extracts from dry roots and shoots of common weed nipplewort (Lapsana communis L. subsp. communis) on seeds germination and early growth of radish (Raphanus sativus L. var. radicula Pers.), cultivars ‘Rowa’, ‘Krakowianka’, ‘Półdługa’. The experiment was carried out in the form of Petri dishes tests with 3 different percentage concentrations of extracts (1%, 3% and 5%, respectively). The germination indexes used here revealed that the germination capacity of the radish seeds was significantly inhibited by extracts from the roots and shoots of L. communis subsp. communis. The elongation growth of radish roots and hypocotyls was stimulated to a higher percentage by extracts from nipplewort roots than by extracts from shoots. The fresh and dry mass of the radish seedlings depended on the type (roots/shoots) and concentration of the extract as well as the radish cultivar. The electrolyte leakage was the highest in seedlings watered with 5% extract of nipplewort shoots. The cultivar most sensitive to nipplewort extracts turned out to be ‘Półdługa’, and the least sensitive was ‘Rowa’. The response of radish seeds to nipplewort extracts is probably due to the presence of allelochemical compounds and their synergistic interaction.