The general plan of the text in the present first edition of this book has been retained since its inception in 2008. Entire text has been thoroughly checked and revised. Many new topics have been prepared to bring the book in the line with syllabi of different universities. This book has written in such a way as to help the undergraduate students studying seed biology in two ways: (i) A very simple language used throughout the book has made the subject matter easily understandable (ii) Great emphasis has been laid on basic fundamentals with simultaneous incorporation of most up-to-date...

Biokohle ist definiert als der Rückstand fester, nicht agglomerierter organischer Stoffe pflanzlichen oder tierischen Ursprungs, der bei der Verkohlung durch Hitze in Abwesenheit von Luft bei einer Temperatur von über 300°C entsteht. Biokohle (ein Synonym für Biokohlenstoff) hat sich als potenzielle Win-Win-Strategie für die Eindämmung des Klimawandels und die Nahrungsmittelproduktion auf globaler Ebene erwiesen. Angesichts der Erschöpfung fossiler Brennstoffe und ihrer schädlichen Auswirkungen auf die Umwelt sowie ihrer relativ geringen Kosten bietet sich Biokohle als praktikable...

The present study provides a detailed description of ecological features, phytochemical analysis, morpho-physiological traits, anatomical features and ultrastructure characteristics as well as biochemical aspects of yielded grains of three species of genus Echinochloa in the Nile Delta of Egypt. The sampled stands are distributed in the northern part of the Nile Delta region of Egypt which covers the north and middle limits of four Governorates namely: El-Dakahlia, Damietta, Kafr El-Sheikh and El-Behira. The results indicated that, the total number of weeds recorded in the study area is...

Bio-carbon is defined as the residue of solid non-agglomerated organic matter of vegetable or animal origin that results from carbonization by heat in the absence of air at a temperature above 300°C. Biochar (a synonymous to Bio-carbon) has emerged as a potential win-win strategy for climate change mitigation and food production at the global scale. Due to the depletion of fossil fuel and its harmful effects on the environment, and relatively low-cost, bio-carbon presented itself as a viable alternative. Moreover, excessive use of chemical fertilizers that are harmful to human and...

Le bio-carbone est défini comme le résidu de matière organique solide non agglomérée d'origine végétale ou animale qui résulte de la carbonisation par la chaleur en l'absence d'air à une température supérieure à 300°C. Le biochar (synonyme de bio-carbone) est apparu comme une stratégie potentielle gagnant-gagnant pour l'atténuation du changement climatique et la production alimentaire à l'échelle mondiale. En raison de l'épuisement des combustibles fossiles et de leurs effets néfastes sur l'environnement, et de leur coût relativement faible, le bio-carbone s'est présenté...

Concerning the biological activities, the methanolic extract of Nicotiana glauca showed the highest antioxidant activity, while the extract of Calligomum polygnoidessubsp. comosum exhibited the weakest antioxidant activity. While the methanolic extract of Pulicaria undulatAsubsp.undulata showed the highest antimicrobial activity, followed by the extracts of Hyoscyamus muticus , Nicotiana glauca and finally by Calligomum polygnoidessubsp. comosum. On the other hand, the aqueous extract of Nicotiana glauca showed the highest inhibition precentages of seed germination, radical growth and plumale...

Five submerged hydrophytes flourished in north east Nile Delta have been chosen to be the subject of this study. These are Ceratophyllum demersum, Myriophullum spicatum, Potamogeton crispus, P. nodosus and P. pectinatus .They were growing at three different hydric habitats (kafr Demira irrigating canal, El Gammalia with agricultural chemicals and contaminants and Manzala Lake with both organic and inorganic pollutants. This study goals are: a) providing quantitative estimates about the environmental conditions (both physical and chemical characteristics of the bottom sediments and overlying...