Titlebook: Economic Botany; Principles and Pract Gerald E. Wickens Textbook 2001 Springer Science+Business Media Dordrecht 2001 Bryophyte.Toxin.additi

ectropion

Amorous

Useful Ferns, Bryophytes, Fungi, Bacteria and Viruses, tends to be overlooked. Here they are being considered separately from the flowering plants in this and the following chapter in order to stress their economic importance for the food, drink, medicine, biochemical industries, etc.

AXIOM

空洞

Economic Botany,cord is believed to be the collection of stones (endocarps) from the fruit of . (hackberry) plus clear evidence of the use of fire associated with the remains of Peking man . from the Middle Pleistocene deposits at Zhoukoudian (Choukoutein), China (Day, 1969; Renfrew, 1973). Monod (1970) noted a sim

colostrum

Plant Collecting, Taxonomy and Nomenclature,the applied scientist. It is not intended to provide a comprehensive treatment of these subjects; although it is hoped that it will make the applied scientist better informed about what to them may appear to be a source of irritation to their immediate research projects.

变化

Plant Conservation,ent is being destroyed at an unacceptable rate. For example, 11.3 million ha out of a global total of more than 4,000 million ha of forest are currently being cleared annually, 45 % of which is attributed to shifting cultivation and long fallow agriculture. Many countries, especially in Africa, will

Host142

Matrimony

Plant Breeding and Propagation,. For more than 10,000 years there have been both conscious selection by the cultivator for larger seeds, etc. and an unconscious selection for non-shattering seed heads and other useful characters. To some extent chance has enabled a particular species to be brought into cultivation and to be prefe

Emmenagogue

Marketing of Crops and Crop Products,the domestic, national or international market. Obviously the purchaser will require the product to be available at the time required and for it to be of the desired quantity and quality. While the domestic market may permit some flexibility, where further processing or national and international ma

变色龙

Human and Animal Nutrition,pair of tissues. Nutritional studies involve the study of both diets and deficiency diseases. A . is one that will provide at least the minimum nutritional requirements for energy, protein, minerals and vitamins required by an organism. An ., such as one low in fibre or with excessive vitamins, will