Download e-book for iPad: Amateur Plant Breeder’s Handbook (2004) by Raoul A. Robinson

By Raoul A. Robinson

ISBN-10: 0973181621

ISBN-13: 9780973181623

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This disease, and typhoid, caused by the bacterium Salmonella typhi, are spread by houseflies, and the Allied forces dusted the whole of Naples with DDT during World War II, in order to prevent major epidemics of insect-borne diseases, including malaria. DDT-resistant houseflies soon appeared and this was the first known example of the breakdown of an unstable, synthetic pesticide to new strains of the pests. It was this failure of DDT that initiated the ‘boom and bust cycle’ of pesticide production.

Citrus sinensis Sweet orange. This is the most important of the citrus fruits, in terms of acreage, and it is now used mainly as a fresh juice at breakfast in order to provide a daily dose of Vitamin C. There are three main types of cultivar. Navel oranges have a second row of carpels opening at the apex with the appearance of a ‘belly button’ or navel. Blood oranges have a red, or streaky red pulp. Thirdly, there are cultivars with normal fruits. ‘Valencia’ is the most important commercial cultivar, followed by ‘Washington Navel’ and ‘Jaffa’.

However, they were unable to reach the west coasts of America, or the Atlantic. They were taken to both areas by European sailors in the sixteenth century. The Portuguese took them from East Africa to West Africa and the Caribbean. The Spanish too them across the Pacific to the New World. The palms of the west Pacific were in epidemiological contact with the centre of origin, and were resistant to various coconut diseases. The palms of East Africa, however, had been separated epidemiologically from the centre of origin for millennia, and they are susceptible to diseases such as Cadang-Cadang in the Philippines, and Lethal Yellowing in the Caribbean.

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Amateur Plant Breeder’s Handbook (2004) by Raoul A. Robinson

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