The cacao (Theobroma cacao) plant is an important Neo-Tropical species whose natural habitat is the Amazon basin. Over the last 30 years there has been a considerable geographical expansion in the availability of cacao genetic resources. As a result the plant has a rich genetic diversity that exists at two levels: that of the primitive populations in the area of original distribution of the species, and that of the derived cultivated populations. This book provides a comprehensive review of our current knowledge of the diversity of the species. It starts by examining the diversity and inheritance of the characteristics of primitive populations in the Amazonian and Caribbean regions. It then looks at the evolution of diversity within cultivated populations first in South America and around the Caribbean, and then beyond the Americas. The book describes the inter-relationships between populations based on morphological and molecular markers. It also examines the conservation of genetic resources and how these genetic resources can be utilized to produce new cultivars.

First published in 1987, this two-volume set is an exhaustive compilation of the most recent data on economically important crops. Volume I presents information on genetics, botany and growth of crop plants, while Volume II covers the production of Crops and their utilization.

Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415]

Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59.

Chocolate - the very word conjures up a hint of the forbidden and a taste of the decadent. Yet the story behind the chocolate bar is rarely one of luxury. From the thousands of children who work on plantations to the smallholders who harvest the beans, Chocolate Nations reveals the hard economic realities of our favourite sweet. This vivid and gripping exploration of the reasons behind farmer poverty includes the human stories of the producers and traders at the heart of the West African industry. Orla Ryan shows that only a tiny fraction of the cash we pay for a chocolate bar actually makes it back to the farmers, and sheds light on what Fair Trade really means on the ground. Provocative and eye-opening, Chocolate Nations exposes the true story of how the treat we love makes it on to our supermarket shelves.