| soil oribatid mite communities under three species of legumes in an ultisol in brazil. | oribatid mite densities in the topsoil and their activity at the soil surface were monitored under three species of perennial legume cover crops namely, arachis pintoi, macroptilium atropupureum and pueraria phaseoloides, grass (panicum maximum) and bare plots on three occasions in 1998 and 1999 in a derived savanna zone in brazil. both densities and activity at the soil surface were higher in the early but cool dry season in april 1998 than in the early wet but warm season in november 1998 and ... | 2002 | 12797403 |
| in vitro anthelmintic activity of five tropical legumes on the exsheathment and motility of haemonchus contortus infective larvae. | this study investigated the in vitro anthelmintic (ah) activity of five tropical legume plants [arachis pintoi ciat 22160 (a.p. 22160), gliricidia sepium, cratylia argentea (c.a. yacapani), c. argentea ciat 22386 (c.a. 22386), c. argentea veranera (c.a. veranera)] against haemonchus contortus infective larvae and the role of tannins/polyphenolic compounds in the ah effect. lyophilized leaf extracts of each plant were evaluated using the larval exsheathment inhibition assay (leia) and the larval ... | 2012 | 22652531 |
| genetic diversity of the forage peanut in the jequitinhonha, são francisco, and paranã river valleys of brazil. | arachis pintoi and a. repens are legumes with a high forage value that are used to feed ruminants in consortium systems. not only do they increase the persistence and quality of pastures, they are also used for ornamental and green cover. the objective of this study was to analyze microsatellite markers in order to access the genetic diversity of 65 forage peanut germplasm accessions in the section caulorrhizae of the genus arachis in the jequitinhonha, são francisco and paranã river valleys of ... | 2016 | 27706713 |
| herbage intake, methane emissions and animal performance of steers grazing dwarf elephant grass v. dwarf elephant grass and peanut pastures. | management strategies for increasing ruminant legume consumption and mitigating methane emissions from tropical livestock production systems require further study. the aim of this work was to evaluate the herbage intake, animal performance and enteric methane emissions of cattle grazing dwarf elephant grass (deg) (pennisetum purpureum cv. brs kurumi) alone or deg with peanut (arachis pintoi cv. amarillo). the experimental treatments were the following: deg pastures receiving nitrogen fertilizati ... | 2016 | 27101877 |
| microbiological and faunal soil attributes of coffee cultivation under different management systems in brazil. | brazil is the biggest coffee producer in the world and different plantation management systems have been applied to improve sustainability and soil quality. little is known about the environmental effects of these different management systems, therefore, the goal of this study was to use soil biological parameters as indicators of changes. soils from plantations in southeastern brazil with conventional (cc), organic (oc) and integrated management systems containing intercropping of brachiaria de ... | 2015 | 26628223 |
| chemical and rheological properties of exopolysaccharides produced by four isolates of rhizobia. | the rheological, physicochemical properties, emulsification and stability of exopolysaccharides (epss) from four rhizobia isolates (lbmp-c01, lbmp-c02, lbmp-c03 and lbmp-c04) were studied. the eps yields of isolates under these experimental conditions were in the range of 1.5-6.63gl(-1). the lbmp-c04 isolate, which presented the highest eps production (6.63gl(-1)), was isolated from arachis pintoi and was identified as a rhizobium sp. strain that could be explored as a possible potential source ... | 2015 | 26234581 |
| influence of drying treatments on antioxidant capacity of forage legume leaves. | this study was aimed to investigate the antioxidant capacities of four common forage legume leaves namely, arachis pintoi (pintoi), calapogonium mucunoides (calapo), centrosema pubescens (centro), and stylosanthes guanensis (stylo). two different drying methods (oven-drying and freeze-drying) were employed and antioxidant activities were determined by dpph, ferric reducing antioxidant power (frap) and β-carotene bleaching assays. total phenolic content (tpc) was determined using folin-ciocalteu ... | 2014 | 24803709 |
| intake and digestion of wethers fed with dwarf elephant grass hay with or without the inclusion of peanut hay. | the aim of this study was to evaluate the effect of the inclusion of peanut (arachis pintoi cv. amarillo) hay in diets based on dwarf elephant grass (deg, pennisetum purpureum schum cv. kurumi) hay of different regrowth ages on forage intake and digestibility in wether lambs. the experimental treatments consisted of deg hay with an interval of regrowth of 30 or 45 days offered as the only feed or in mixture with peanut hay (300 g/kg of total dry matter (dm)), which were tested in eight texel × s ... | 2014 | 24788311 |
| cryopreservation of arachis pintoi (leguminosae) somatic embryos. | in this study, we successfully cryopreserved cotyledonary somatic embryos of diploid and triploid arachis pintoi cytotypes using the encapsulation-dehydration technique. the highest survival rates were obtained when somatic embryos were encapsulated in calcium alginate beads and precultured in agitated (80 rpm) liquid establishment medium (em) with daily increasing sucrose concentration (0.50, 0.75, and 1.0 m). the encapsulated somatic embryos were then dehydrated with silica gel for 5 h to 20% ... | 2015 | 24441368 |
| in situ degradability and selected ruminal constituents of sheep fed with peanut forage hay. | because legumes are a very important feed source for ruminants, the aim of this study was to evaluate the ideal inclusion level of hay arachis pintoi cv. belmonte in sheep diets by measuring the dry matter intake (dmi), concentration of volatile fatty acids, ammonia-nitrogen concentration, ruminal ph and the in situ degradability of dry matter (dm) and crude protein (cp). in the experiment with four sheep, a 4 × 4 latin square design was used with four periods and four treatments (0%, 30%, 60% a ... | 2013 | 24016145 |
| steers performance in dwarf elephant grass pastures alone or mixed with arachis pintoi. | the inclusion of legumes in pasture reduces the need for mineral nitrogen applications and the pollution of groundwater; however, the agronomic and animal husbandry advantages with tropical legumes are still little known. the objective of this study was to quantify the effect of the use of forage peanut (arachis pintoi cv. amarillo) in dwarf elephant grass pastures (pennisetum purpureum cv. brs kurumi) on forage intake and animal performance. the experimental treatments were dwarf elephant grass ... | 2013 | 23413007 |
| origin of triploid arachis pintoi (leguminosae) by autopolyploidy evidenced by fish and meiotic behaviour. | polyploidy is a dominant feature of flowering-plant genomes, including those of many important crop species. arachis is a largely diploid genus with just four polyploid species. two of them are economically important: the cultivated peanut and a. glabrata, a tropical forage crop. even though it is usually accepted that polyploids within papilionoid legumes have arisen via hybridization and further chromosome doubling, it has been recently suggested that peanut arose through bilateral sexual poly ... | 2011 | 21693666 |
| potential phytoextraction and phytostabilization of perennial peanut on copper-contaminated vineyard soils and copper mining waste. | this study sought to evaluate the potential of perennial peanut (arachis pintoi) for copper phytoremediation in vineyard soils (inceptisol and mollisol) contaminated with copper and copper mining waste. our results showed high phytomass production of perennial peanut in both vineyard soils. macronutrient uptakes were not negatively affected by perennial peanut cultivated in all contaminated soils. plants cultivated in mollisol showed high copper concentrations in the roots and shoots of 475 and ... | 2011 | 21286847 |
| cryopreservation of in vitro grown shoot tips and apical meristems of the forage legume arachis pintoi. | a cryopreservation protocol using the encapsulation-dehydration procedure was established for shoot tips (2-3 mm in length) and meristems (0.3-0.5 mm) sampled from in vitro plantlets of diploid and triploid cytotypes of arachis pintoi. the optimal protocol was the following: after dissection, explants were precultured for 24 h on establishment medium (em), encapsulated in calcium alginate beads and pretreated in liquid em medium with daily increasing sucrose concentration (0.5, 0.75, 1.0 m) and ... | 2014 | 19946657 |