By R. W. Allard. John Wiley & Sons, New York. The first edition of Principles of Plant Breeding , by R. W. Allard, professor of. Turn on 1-Click ordering. As ancient as agriculture itself, plant breeding is one of civilization\'s oldest activities. Plant breeding involves elements of both natural and cultural selection-a process which operates on individual plants and on plant populations. Read Principles of Plant Breeding book reviews & author details and more at Free delivery on by Robert W. Allard (Author). out of 5 stars 1.
|Published:||15 October 2017|
|PDF File Size:||28.56 Mb|
|ePub File Size:||21.39 Mb|
Perhaps the most important feature of resistant varieties is the stabilizing effect they have on production and hence on steady food supplies.
Principles Of Plant Breeding: Allard Robert W.: : Books
Varieties tolerant to droughtheat, or cold provide the same benefit. Modifications of range and constitution Another common goal of plant breeding is to extend the area of production of a crop species.
A good example is the modification of grain sorghum since its introduction to the United States about years ago. Of tropical origin, grain sorghum was originally confined to the southern Plains area and the Southwest, but earlier maturing varieties were developed allard plant breeding grain sorghum is now an important crop as far north as North Dakota.
Development of crop varieties suitable for mechanized agriculture has become a major goal of plant breeding in recent years. Uniformity of plant characters is very important in mechanized agriculture because field operations are much easier when the individuals of a variety allard plant breeding similar in time of germination, growth rate, size of fruit, and so on.
Principles of Plant Breeding by R. W. Allard (, Hardcover) | eBay
Allard plant breeding in maturity is, of course, essential when crops such as tomatoes and peas are harvested mechanically.
The nutritional quality of plants can be greatly improved by breeding. For example, it is possible to breed varieties of corn maize allard plant breeding higher in lysine than previously existing varieties.
Breeding high-lysine maize varieties for those areas of the world where maize is the major source of this nutritionally essential amino acid has become a major goal in plant breeding.
Principles of Plant Breeding by R. W. Allard (1960, Hardcover)
In breeding ornamentalsattention is paid to such factors as longer blooming periods, improved keeping qualities of flowers, general thriftiness, and other features that contribute to usefulness allard plant breeding aesthetic appeal. Novelty itself is often a virtue in ornamentals, and the spectacular, even the bizarre, allard plant breeding often sought.
The chapters on the genetics of host-pathogen interactions and breeding for disease resistance were comprehensive, but needed updating in light of more recent developments in this area. As this subject is sufficiently covered in numerous alternative texts, their removal is probably appropriate.
It is disappointing however that the chapters on polyploidy, still an important area of plant breeding, were removed. Remarkable though this book is, it is written by one person and it does show.
Obligate outbreeding crop systems are covered in very little depth. Surprisingly, apomixis, allard plant breeding an important area of research, is dismissed as being of no relevance to plant breeding despite a later advocation to fixing heterosis through clonal propagation.
Unexpectedly, this new edition does not address the impact allard plant breeding molecular markers and biotechnology on plant breeding. Molecular markers are covered to some extent but mainly to describe experiments on environmentally adapted gene complexes.
Principles of Plant Breeding - Robert Wayne Allard - Google книги
Mapping and QTL mapping are addressed with the description of a single paper on QTL interactions and the relationship between heterozygosity and heterosis. A host of complementary allard plant breeding are not discussed, including the excellent work of Stuber et al.
S 0 1 6 8 - 9 4 5 2 0 0 0 0 2 2 5 - 9 Book re6iew gene cloning to manufacture pharmaceuticals in clonally propagated plants is the only acknowledgment given to biotechnology.
The book ends with a disappointing new chapter on breeding allard plant breeding low input systems. Many obvious points concerning breeding for low input systems are not made, for example, the low relevance of the previously described dwarf sorghum allard plant breeding to subsistence farming is not commented on.