Implications of weeds of genus euphorbia for crop production: a review

Tanveer, Asif; Khaliq, Abdul; Javaid, M.M.; Chaudhry, Muhammad Naeem; Awan, Inayat Ullah

doi:10.1590/s0100-83582013000300024

Cited by 16 publications

(14 citation statements)

References 40 publications

(25 reference statements)

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“…The donor plants release allelochemicals into the surrounding environment through leachates, root exudates and volatilization (see Fig. 3) and, hence, accumulation of allelochemicals causes toxicity, affecting crop growth and yield [20]. The weediness of some species that are introduced into new environments may be caused by their production of allelopathic chemicals, which indigenous plants are not yet adapted to.…”

Section: Allelopathymentioning

confidence: 99%

Economic Importance of Weeds: A Review

Ekwealor

Echereme

Ofobeze

et al. 2019

APRJ

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Weeds are plants that are unwanted in a given situation and may be harmful, dangerous or economically detrimental. They are responsible for substantial losses of farm production and extensive damage to the environment. Weeds, through competition with other plants, would almost always have deleterious effects on them and can have a lethal effect on livestock through consumption of weeds containing poisonous chemicals in the pasture. Weed invasion has become the most dreaded and deleterious impact of weeds in nature; it adversely affects agriculture, alters the balance of ecological communities, disrupts the natural diversity and interferes in the aesthetic value of the environment. Weeds can interfere in water management, thereby reducing the economic value of water. Weeds, however, besides their deleterious impacts in nature, have many beneficial properties, which include, but not limited to benefits of weeds to companion plants, ethnomedical and ethnopharmaceutical uses of weeds, ethnobotanical uses of wild edible weeds, and the use of weeds as feed for livestock. In the light of myriads of deleterious effects and benefits accompanying weeds, it is suggested that more studies should be carried out on weed control and weed management. Also, further explorations on the potential uses of weeds to man, his environments and livestock should be undertaken.

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Section: Allelopathymentioning

confidence: 99%

Economic Importance of Weeds: A Review

Ekwealor

Echereme

Ofobeze

et al. 2019

APRJ

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“…Similarly, crops yield reduction under wild poinsettia (Jiangbo, 2010) may also be partly explained by the toxic effects of high concentration of phenolics from Euphorbia species (Tanveer et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Genotoxic and Inhibitory Effects of Invasive Weed Wild Poinsettia (Euphorbia heterophylla Linn.) in Sunflower

Langeroodi

Dadgar

Kamkar

et al. 2015

Helia

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Determining the mode of action of allelochemicals is one of the challenging aspects in the allelopathic studies. In this research, the methanolic extracts of wild poinsettia (Euphorbia heterophylla Linn.) at different concentrations (0, as untreated control, 8%, 12% and 16%) were tested for genotoxic and inhibitor activity on morphological, biochemical and molecular traits of sunflower (Helianthus annuus L.). Seedling emergence was reduced with wild poinsettia leaf extracts in sunflower. Leaf extracts of wild poinsettia decreased chlorophyll a and b levels and consequently the soluble sugar content was proportional to the increase in the concentrations of the leaf leachates. Some changes occurred in random amplification of polymorphic DNA (RAPD) profiles, profiles of protein bands and total soluble protein of germinated treated seed. These included variation in band intensity, loss of bands and appearance of new bands compared with control. Increased concentration of extracts caused increasing the total soluble protein content, decreasing genome template stability (GTS) value and increasing polymorphism values, the results indicated that they were dose dependent. For instance, the highest and lowest amounts of GTS were observed in 8% and 16%, respectively. In a dendrogram constructed based on genetic similarity coefficients, the treatments were grouped into two main clusters: (a) 8%, 12% and 16% dose clustered together and (b) untreated control grouped alone. Also, we concluded that the basis of interaction between plants, like allelopathy, may be related with genotoxic effects.

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“…Echinochloa crus-galli (Poaceae) ocorre com grande frequência e distribuição em todas as regiões produtoras de arroz sendo uma das principais espécies que invadem campos de arroz no sul do Brasil (Andres et al, 2007). As espécies invasoras de culturas se consolidam por meio da competição por recursos com as espécies de interesse agrícola (Marambe e Amarasingle, 2002;Tanveer et al, 2013).…”

Section: Discussionunclassified