By D A Murray

ISBN-10: 0585439265

ISBN-13: 9780585439266

ISBN-10: 0868404608

ISBN-13: 9780868404608

This ebook makes an important contribution to the controversy in regards to the functions and implications of gene expertise from the viewpoint of a plant biologist. it really is written in an available approach and hence could be applicable for non-specialists and the extra basic reader, in addition to scholars and others in plant breeding and biotechnology. the writer is a well known Australian botanist, who has written or edited numerous earlier books on either educational and well known subject matters in plant technology. during this publication he addresses questions such as:How are genetically converted vegetation producedWhich breeding ambitions are worthwhile?Can the break out of transferred genes be controlled?Who is tracking the unforeseen results of gene transfer?Will GM vegetation ever be appropriate to natural growers?

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Extra resources for Seeds of Concern: The Genetic Manipulation of Plants

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Somaclonal variation has been particularly useful for revealing heritable resistance to various fungal toxins, permitting resistance to pathogens to be expressed in subsequent progeny. Occasionally a virus-resistant strain results. 36 This simple procedure is an inexpensive way of generating new plant varieties, and has been widely adopted in India and China. In practice, the newer techniques of genetic recombination should not be considered in isolation from conventional measures for plant breeding, despite the frequent assumption that the latest techniques stand alone and can deliver marvellous new plant varieties by themselves.

Ingredients added to increase the effect of the herbicidal ingredient can have serious effects alone, or by acting synergistically with the active ingredients. 31 Some herbicides give the appearance of being relatively safe. Sulfonylureas, for instance, inhibit an enzyme that is non-functional in humans. This is acetolactate synthase, which catalyses the first step in the synthesis of the branched-chain amino acids found in polypeptides. Because we lack a functional form of this enzyme, all three branchedchain amino acids, valine, leucine and isoleucine, are essential in the human diet.

The use of chlorates (potassium or sodium salts) began in Queensland in 1901. Potassium chlorate was used against prickly pear 46 • SEEDS OF CONCERN (Opuntia stricta) with limited effect. 14 The same cannot be said of more recent herbicides, despite up to 1000-fold reductions in the absolute amounts applied per unit area. 12,15,16 In the 1940s, the first of the phenoxyacetic acid group was trialled successfully: 2,4-dichlorophenoxyacetic acid (2,4-D). e. dicotyledons), whereas many grasses and cereals (monocotyledons) were tolerant.

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Seeds of Concern: The Genetic Manipulation of Plants by D A Murray

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