تأثير المستخلص المائي لحشيشة السعد Cyprus Rotundus في إنبات و نمو نبات اللوبيا Vigna Sinensis = Effect of Cyprus Rotundus L Aqueous Extracts on Germination and Growth of Plant Vigna Sinensis

2015 ◽  
Vol 9 (3) ◽  
pp. 7-18
Author(s):  
سالم محمد ابن سلمان ◽  
محروس عبد الله باحويرث ◽  
صلاح عبد الله ابن فريجان
Keyword(s):  
Aqueous Extracts ◽  
Vigna Sinensis ◽  
Germination And Growth

scholarly journals Results of the Research on the Allelopathic Effect Between the Neophyte Species, Iva Xanthiifolia Nutt. (“Ierboaia”) and Some Agricultural Crops

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Nicolae HODIŞAN
Keyword(s):  
Primary Source ◽  
Triticum Aestivum L ◽  
Ambrosia Artemisiifolia ◽  
Allelopathic Effect ◽  
Aqueous Extracts ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Vegetative Organs ◽  
Secale Cereale L ◽  
Germination And Growth

Iva xanthiifolia Nutt., popularly known as “ierboaie”, is a neophyte invasive species notorious for being an allergenic weed, identified in the west of Romania, in two locations near Oradea, in Bihor County, near the border with Hungary. This species belongs to the allergenic weeds, being considered by some even more dangerous than Ambrosia artemisiifolia L., the two representing in summer the primary source of allergies, or diseases like hay fever, due to the pollen released in the atmosphere.The research is about the results of the allelophatic effect upon the germination and growth of plants, immediately after springing, viewed as the interaction between the species of Iva xanthiifolia and five other crop plants: wheat (Triticum aestivum L.), rye (Secale cereale L.), barley (Hordeum vulgare L.), rape (Brassica napus L.) and lucerne (Medicago sativa). The experiments that were performed consisted in applying treatments with aqueous extracts obtained from different vegetative organs (roots, leaves, stems and seeds) harvested from Iva xanthiifolia plants. In all cases, the results indicate a rather large inhibitor effect, no matter if the aqueous extracts were obtained from green plants or dehydrated ones.

Effect of Setaria verticillata Aqueous Extracts on Germination and Growth of Different Varieties of Wheat

2019 ◽  
Vol 14 (4) ◽  
pp. 283-287
Author(s):  
Hassan Pyar ◽  
Mahroos Abedalla Bahwirth ◽  
Ghassan Abdul Wahid Obad
Keyword(s):  
Aqueous Extracts ◽  
Setaria Verticillata ◽  
Germination And Growth

scholarly journals AUTOTOXIC EFFECT OF Anagyris foetida L. ALKALOIDS CONTENT

2021 ◽  
Vol 9 (3) ◽  
pp. 362-368
Author(s):  
Samar Emad Ezzat ◽  
Keyword(s):  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Integrated Management ◽  
Root Extract ◽  
Aqueous Extracts ◽  
Poisonous Plants ◽  
Minimum Concentration ◽  
Germination And Growth ◽  
Allelopathic Compounds ◽  
Plant Germination

The present study aimed to evaluate the autotoxic effect of Anagyrus foetida root, flower, and leaves alkaloids on the seed germination and growth of the same species. The pot experiment was conducted for three concentrations i.e. 4, 8, and 12% of aqueous extracts of root, flower, and leaves. Further, the seed and leaves were evaluated for their alkaloids content i.e. cytisine, aporphine, and anagyrine by high-performance liquid chromatography. The results of the study suggested that seed treated by 4% root extract showed a decrease in aporphine, cytisine, and anagyrine. While the seed treated with the flower and leaves extract (12%) showed a lower concentration of all three alkaloids as compared to untreated control. While a mixture of all three parts extracts at 4% concentration showed a minimum concentration of aporphine, cytisine, and anagyrine alkaloids in the treated seeds. Anagyrus foetida roots effectively secret allelopathic compounds which inhibit A. foetida plant germination and growth. The allelopathy effect of plants can be studied in the integrated management of poisonous plants. Results of the study suggested that the farmers should not repeat the A. foetida plantation continue two successive years.

scholarly journals Influence of Phenology and Post-Harvest Processing of Vegetal Material on the Allelopathy of Annoni Grass (Eragrostis plana) Extracts

2019 ◽  
Vol 37 ◽  
Author(s):  
S.M. SCHEFFER-BASSO ◽  
F. Jr. R. FIORENTIN ◽  
A. FAVARETTO
Keyword(s):  
White Clover ◽  
Plant Material ◽  
Allelopathic Effect ◽  
Distilled Water ◽  
Aqueous Extracts ◽  
Phenological Stage ◽  
Post Harvest ◽  
Allelopathic Activity ◽  
Germination And Growth ◽  
Growth Of Seedlings

ABSTRACT: The phenological stage, post-harvest processing and quantity of material can interfere in the allelopathic activity of extracts. The objective of this study is to test the allelopathic effect of aqueous extracts of the leaves of Annoni grass (Eragrostis plana), an invader of natural pastures. Twelve extracts were prepared by combining the phenological stage of the plants when harvesting the leaves (vegetative; flowering), post-harvest processing before extraction (fresh; dry at 40 oC), and the amount of plant material (5, 15, and 25 g 100 mL-1 distilled water). Two bioassays were conducted in a germination chamber, with evaluation of germination and growth of seedlings of lettuce (Lactuca sativa) and white clover (Trifolium repens). The extracts with higher allelopathic activity were further developed with 15 and 25 g of dried leaves and harvested in plants at the vegetative stage. Germination was attributed to being the greatest contribution to the divergence between the extracts. White clover was more sensitive to extracts, for which 50% to 67% of the extracts were effectively allelopathic (≥50% inhibition); in lettuce, between 8% and 58% of the extracts exhibited this potential. The phenological stage was the factor with a greater individual effect on the allelopathic activity on lettuce and white clover seedlings, and on lettuce germination. The post-harvest processing responded by the greater variation on germination and germination speed index of white clover. The sensitivity of the white clover to extracts of Annoni grass suggests a compromise of its establishment in pastures with the presence of the invader.

scholarly journals Research on the allelopathic effect among the species Tanacetum vulgare and some agricultural crops

2010 ◽  
pp. 105-109
Author(s):  
Nicolae Hodişan ◽  
Nicolae Csep
Keyword(s):  
Chemical Compounds ◽  
Triticum Aestivum L ◽  
Great Sensitivity ◽  
Allelopathic Effect ◽  
Aqueous Extracts ◽  
Agricultural Crops ◽  
Hordeum Vulgare L ◽  
Tanacetum Vulgare ◽  
New Research ◽  
Germination And Growth

The research presents the results of the allelophatic effect upon the germination and growth of plants, immediately after springing, viewed as the interaction between the species of Tanacetum vulgare sin Chrysanthemum vulgare and three other crops: wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), rape (Brassica napus ssp. oleifera L.). The experiments that were performed consisted in applying treatments with aqueous extracts obtained from the roots, leaves, stems and flowers harvested from T. vulgare plants upon the seeds of the three agricultural crops mentioned before. In all aqueous extracts, the results indicate the presence of some chemical compounds that have inhibiting allelophatic effect. The plants upon which tests were made showed great sensitivity, the results on their germination and growth being significantly negative and highly significantly negative.The conclusions of this research sustain the idea of setting new research objectives in order to discover the chemical compounds from T. vulgare extracts that have such a stong effect and the possibilities they offer.

scholarly journals Phytotoxic Activity of Guapira graciliflora (Nyctaginaceae) on Weeds

2020 ◽  
Vol 8 (1) ◽  
pp. 287
Author(s):  
Allana Silva Rodrigues ◽  
José Weverton Almeida Bezerra ◽  
Viviane Bezerra Da Silva ◽  
Adrielle Rodrigues Costa ◽  
Felicidade Caroline Rodrigues ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Chlorophyll Content ◽  
Mechanisms Of Action ◽  
Calotropis Procera ◽  
Aqueous Extracts ◽  
Phytotoxic Activity ◽  
Chemical Groups ◽  
Germination And Growth ◽  
Germinated Seeds

The plants produce a variety of compounds that are not directly associated with their growth and are derived from their secondary metabolisms. Such compounds can be used in the formulation of bioherbicides, in the control of weeds. Among the chemical groups that most present allelopathic actions are the phenolic compounds which are present the flavonoids. A species rich in such compounds is Guapira graciliflora, which allows hypothesizing that it may present phytotoxic action. In this way, the objective of this research was to evaluate its phytotoxic action on the germination and growth of Cenchrus echinatus and Calotropis procera. For this purpose, aqueous extracts were prepared from fruits and leaves and applied to seeds of the species mentioned above. Pre and post germinative parameters were measured. Our results show that the extracts can retard the growth of the roots of C. echinatus and C. procera in a significant way (p <0.05), however it is not able to interfere in the number of germinated seeds or germinated seeds speed. The mechanisms of action of the allelochemicals may be related to inhibition of specific PSII sites or reduction of chlorophyll content. Guapira graciliflora presents allelochemicals in the constitution of its leaves and its fruits that affect the growth of the initial structures of C. echinatus and C. procera, with potential to be used as bioherbicides in the control of these weeds.

scholarly journals Phytochemistry and Allelophatic Potential of Torelliodora Eucalyptus Leaves on Germination and Initial Growth of Mutambo

2018 ◽  
Vol 36 ◽  
Author(s):  
S.R. PEREIRA ◽  
D.R. FONSECA ◽  
R. MATIAS ◽  
B.O. CORRÊA ◽  
D.R. PEDRINHO
Keyword(s):  
Native Species ◽  
Soluble Solids ◽  
Phytochemical Analysis ◽  
Initial Growth ◽  
Aqueous Extracts ◽  
Allelopathic Potential ◽  
Randomized Experimental Design ◽  
Biological Tests ◽  
Ultrasound Bath ◽  
Germination And Growth

ABSTRACT: Considering the possibility of a intercropping between exotic and native wood species for Legal Reserve areas restoration, information is needed about the possible interactions (positive or negative) between the involved species. The aim of this study was to determine the allelochemicals classes of aqueous extracts from dried and fresh leaves of torelliodora eucalyptus, as well as to evaluate the allelopathic potential of these extracts in the germination and initial growth of Guazuma ulmifola, a native species from Cerrado. To obtain the aqueous extracts at the concentrations of 25 mg mL-1, 50 mg mL-1, 100 mg mL-1 and 200 mg mL-1, the fresh and dried leaves of the eucalyptus were separately subjected to turbolize, followed by an ultrasound bath for two hours and static maceration, in darkness, for 48 hours in a refrigerator. The extracts were subjected to classical phytochemical analysis and determination of pH, electrical conductivity, soluble solids and allelopathic tests. For the germination and growth biological tests, a completely randomized experimental design with four replications per treatment was performed. The phytochemical analysis indicated that the phenolic compounds and derivatives are the major constituents of the aqueous extract of fresh and dried leaves of the tolleriodora eucalyptus, with predominance of the flavonoid contents on the dried leaves. Dried and fresh leaves extracts of torelliodora eucalyptus influenced G. ulmifolia germination, but this effect was dependent on their concentration. Initial seedling growth of G. ulmifolia was negatively influenced only by the dried leaves extract of the exotic species.

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