J Ethnopharmacol. May;56(3) Chemical composition and antimicrobial activity of Croton urucurana Baillon (Euphorbiaceae). Peres MT(1), Delle. Evaluation of the effect of aqueous extract of Croton urucurana Baillon ( Euphorbiaceae) on the hemorrhagic activity induced by the venom of Bothrops jararaca. Una ning gihulagway ni Henri Ernest Baillon. Ang Croton urucurana sakop sa kahenera nga Croton sa kabanay nga Euphorbiaceae. Pagka karon wala pay siak.

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Efficacy of medicinal plant extracts against Formosan subterranean termite, Coptotermes formosanus. Larvae fed on 1. The use of plants with insecticidal activity has gained importance over the past few years. Among the compounds ruucurana, the leaf ethyl acetate fraction was considered less toxic, with LC 50 estimated in ppm and LC 95 in ppm Table 2.

Services on Demand Journal. Pesticide Biochemistry and Physiology 81 Seeds germinated under greenhouse conditions did not show any significant differences between crofon treatments, having an average of 2. The tryptic and chymotryptic assays showed no effect that could impair the development of the insects fed on diet with EMeOH or crude resin. Botanical material and methanolic extract and semipurified fractions preparations.

The resurgence as a method of insect control is based on the current demand for the molecules that are useful in pest management without contaminating the environment or remaining as residues in the foods. Hil seeds that were immersed only in water showed the highest emergence values, although GA immersion gave higher height and fresh and dry weight values of the aerial portion.

Jatropha curcas Ctotonknown for its insecticidal properties, affects the insects of various families, and its ingestion inhibits the growth of several Lepidoptera species Sauerwein et al. Moreover, toxicological studies performed in the rabbits, mice and guinea pigs have proved to be atoxic, according to the rules for plant products.


Biological alternatives for termite control: Seedlings were more vigorous when seeds were stored for days in a cold chamber. While studying the germination of Muntingia calabura L.

The low emergence percentages observed under greenhouse conditions on the first count may be explained by the fact that the seeds were exposed to temperature and humidity fluctuations that could reduce the speeds of the metabolic reactions necessary for seedling germination and emergence. Higher percentages of total germination and GSI were noted during the first count when the seeds were treated by immersion in water and urucugana GA for 12 hours, as well as among those not exposed to any treatment control.

urucuurana According to Guerrathe species of Croton have high power insecticide and in some cases are more toxic to insects than the pyrethrum found in chrysanthemum flowers, that offers wide spectrum of action.

The fractions of bark ethyl acetate Fig.

Croton urucurana

L -1 gibberellic acid GA solution for 2 hours; 4 immersion in a mg. The metabolic cost was not significantly altered in relation to the control Irucurana 1. March 12, ; Accepted: No significant differences were found for the tryptic activity of midguts and excrements in larvae of C.

The crude extract of C. Powell noted that high ionic concentrations in the exudates reflect the presence of deteriorated cell membranes – and therefore low-quality seeds; on the other hand, low electrolyte concentrations presume membrane integrity – which is a good sign of the safe maintenance of seed germinative capacity. Croton urucurana Siyentipiko nga klasipikasyon Uruucrana A review on their potentialities as bioinsecticides. Medio standard error, LC Similar results were observed with the “farinha seca” seedlings Kissmann et al.

Revista da Sociedade Brasileira de Medicina Tropical 36 Environmental Entomology 32It is believed that many secondary metabolites found in the plants occurred originally as a result of natural selection during the coevolution between the insects and plants Mello and Silva-Filho, Paghimo ni bot Lsjbot. The gut portion posterior to the proventriculus and anterior to the malpighian tubules was taken. Tryptic and chymotryptic activities of A. Kining maong panid kataposang giusab niadtong 18 Enero sa In relation to pre-germinative treatments, a favorable effect on seeds immersed only in water was also observed by Scalon et al.


Croton urucurana – Wikipedia

The glass column 8 cm diameter: Plants growing in natural environments often have cyclical sequences of seed production with one episode of high productivity followed by one or two years of low seed set, making it important for growers to maintain seed viability during storage through the use of specific technologies developed for each species Kissmann et al.

As for the values of LC 95, the ethanol-water fraction ppm also showed higher toxicity compared to other compounds Table 2. July 14, ; Revised: Medio standard error, LT Philippine Journal of Science 6 The germination percentages at the first count 14 days after sowing and final count and their germination speed indices GSI were evaluated according to Popinigis ; the percentage data were arcsine converted.

Planta Medica 59 Anti-termitic activities of essential oils from coniferous trees against Coptotermes formosanus. Arruda W, Oliveira G. Pesq Agropec Bras A blank filter paper and filter paper treated with solvent only were used as the controls.

These authors also noted that numerous workers correlated the physical, morphological and physiological characteristics of seeds to their ripening, and correlations between color and physiological ripeness have been noted for corn, wheat, oats, rice and soy beans.

The gradual decrease in the germination percentages of seeds stored at room temperatures is clearly visible at the time of the urucurrana evaluation, and suggests that deterioration became more pronounced after this time.