Plant Biotechnology and Genetics: Principles, Techniques and Applications

3.2.4 Other Topics in Population and Quantitative Genetics Refer back to Figure 3.1, and try to imagine factors that might compl ...

melon variety, but a given market might be driven by the need for melons that are large (but not too large), oblong, sweet, and ...

with average performance in many environments is an ongoing debate among plant breeders. 3.2.7 Plant Breeding Is a Numbers Game ...

identified for all traits of interest. The perfect variety might require recombining alleles from hundreds of different germplas ...

Figure 3.6.The pedigree of an oat variety named “Goslin.” The parents of the cross from which Goslin was selected are shown on t ...

mutations, the unmasking of suppressed genes, the gradual uncovering of rare epistatic gene interactions, or all of these? There ...

The important thing to remember about ideotypes, or fitness surfaces, is that both are dependent on a specific environment. If t ...

is the development ofmultiline varieties, which contain a mixture of resistance types. Another method is to “pyramid” or “stack” ...

Some breeding objectives can produce interesting challenges. Consider the objective of reduced seed content in grapes or waterme ...

self-pollinating species involve emasculation (removal of stamens) and the introduction of pollen from another plant. The timing ...

exactly one random line in each following generation by taking a single seed from each F 2 family in every segregating generatio ...

then some lines will be represented by greater numbers of progeny than other lines simply by random chance; thus, the total gene ...

disease resistance that is not present in adapted varieties, but it may be used to introduce any simply inherited trait from a p ...

could become a plant variety, and the final stages of variety development will begin. Several additional things must now be acco ...

Although not all breeders would consider this a separate stage in a breeding program, the steps listed in Table 3.1 technically ...

(Fig. 3.12). The primary difference between a traditional open-pollinated variety and a tra- ditional landrace is that the forme ...

and others where some level of controlled mating and selection can be performed every year. Important considerations in the sele ...

a progeny generation called Syn-1. Seed from Syn-1 may be sold as a variety or used to produce a next generation called Syn-2. G ...

high value of the maize industry in many developed countries, the development of hybrid varieties, and subsequent hybrid seed pr ...

varieties, hybrids may not show as much advantage as they do in cross-pollinated varieties, because these species naturally tole ...