ABSTRACT Salinity is one of the factors that most limit agricultural yield in Brazilian semi-arid region. In this context, present study aimed to evaluate leaf gas exchange and biometric characteristics accessions Saccharum complex subjected salt stress. The experiment was carried out a greenhouse, installed at Embrapa Semiárido, Petrolina, PE, Brazil. experimental design randomized blocks, wit...

The present work deals with the preparation and characterization of activated carbons from bark asparagus palm (Laccosperma robustum) by chemical activation phosphoric acid potassium hydroxide. process was optimized on basis analysis iodine number, methylene blue number yield as a function parameters (concentration activating agents pyrolysis temperature). It emerges that temperature concentrat...

Chlidoplitis and Megahoplitis are closely related Palaearctic subgenera of the osmiine bee genus Hoplitis (Megachilidae) containing nine and two species, respectively. Analysis of female pollen loads and field observations suggest that all species are pollen specialists. Whereas the H. (Chlidoplitis) species are probably all narrowly oligolectic and exclusively collect pollen on Allium (Alliace...

Adverse effects and drug resistance to the current onchopharmacologicals have increased the demand for alternative novel therapeutics. We herein introduce justicidin B, an arylnaphthalen lignan isolated from different plant origins, especially Justicia, Phyllanthus, Haplophyllum and Linum species. This cyclolignan exhibits a wide array of biological properties ranges from piscicidal to antifung...