A laboratory experiment was conducted to determine the allelopathic effect of residues aqueous extract of two ecotype of swallowwort(Cynanchum acutum L.) on germination traits of wheat (Triticum aestivum L.). A factorial experiment based on a completely randomized design with four replications was conducted at Islamic Azad University of Karaj in 2012. Factors were two swalloww...

Allelopathic plants are important resources for the discovery of bioherbicides. Rosebay willowherb [Chamaenerion angustifolium (L.) Scop. syn. Epilobium L.] widely distributes in Western Asia, Europe, and North America, behaves as a dominant species within community due to production substances that restrict growth other plants. This study aims at investigating allelopathic potential rosebay by...

Abstract Allelopathic compounds are secondary metabolites created biologically by plants and microbes from the metabolism of carbohydrate, fats amino acids. The process their synthesis is affected type plants, path its photosynthesis, nutrition various stress processes. When released to rhizosphere, effect begins on soil organisms, as it considered a communication between plants. Which affects ...

We study a competition system of the growth of two species of plankton with competitive and allelopathic effects on each other on time scales. With the help of Mawhin’s continuation theorem of coincidence degree theory, a set of easily verifiable criteria is obtained for the existence of at least two periodic solutions for this model. Some new existence results are obtained. An example and nume...

The paper studies a modified Lotka-Volterra competition system with time-delays, which describes the growth of two species of plankton with competitive and allelopathic effects on each other. With the help of Mawhin’s continuation theorem of coincidence degree theory, we obtain a set of sufficient conditions for the existence of multiple positive periodic solutions. Finally, we carry out a nume...

Total synthetic studies on natural products with promising biological profiles, coupled with their intriguing structural features, are described. The target molecules dealt with in this article are five helianane-type sesquiterpenes (heliannuols A, D and K and heliespirones A and C) and three meroterpenes (breviones A, B and C) with allelopathic activity, as well as four cytotoxic polyketides (...

Gongronema latifolium is a plant that has a wide range of nutritional and ethnomedical uses in different tropical African communities. Scientific reports on the chemical composition and bioactivity (anti-inflammatory, antimicrobial, antidiabetic, antioxidant, anticancer and allelopathic properties) of the plant material by different authors are discussed in this review. Future prospects of the ...

a laboratory experiment was conducted to determine the allelopathic effect of residues aqueous extract of two ecotype of swallowwort(cynanchum acutum l.) on germination traits of wheat (triticum aestivum l.). a factorial experiment based on a completely randomized design with four replications was conducted at islamic azad university of karaj in 2012. factors were two swallowwort ecotype (ghazv...

Weed control by crops through growth suppressive root exudates is a promising alternative to herbicides. Buckwheat (Fagopyrum esculentum) is known for its weed suppression and redroot pigweed (Amaranthus retroflexus) control is probably partly due to allelopathic root exudates. This work studies whether other weeds are also suppressed by buckwheat and if the presence of weeds is necessary to in...