Polyploidy isa major force in the evolution of both wild and cultivated plants. ... Some of the most important consequences of polyploidy for plant breeding are the increment in plant organs ("gigas" effect), buffering of deleterious mutations, increased heterozygosity, and heterosis (hybrid vigor...
Examples of the occurrence of Polyploidy can be found in most major groups of algae. However, most studies have been conducted within the Chlorophycophyta. These plants often contain fewer chromosomes and larger cells than most other algal groups, although some contain in excess of 500 ...
The term flowering plants or angiosperm is considered as a group of plants present in lands. These kinds of plants are able to produce seeds, fruits (from the seeds), and flowers. Examples of angiosperm are shrubs, herbaceous plants, grasses, and many other trees....
Successful and unsuccessful applications of polyploid induction to plant breeding are considered, using examples from a wide range of crop plants. Followin... DR Dewey - 《Basic Life Sciences》 被引量: 102发表: 1979年 The polyploidy and its key role in plant breeding Main conclusion This artic...
Polyploidy in Plants & Animals: Speciation & Cells from Chapter 12/ Lesson 14 26K Some organisms have a condition known as polyploidy, which occurs when an organism has three or more sets of chromosomes. Learn about polyploidy in plants and animals. Explore speciation and triploids and unders...
Allopolyploidy is an important mode of speciation in flowering plants [a]: as many as 50–70% of angiosperms are thought to be of polyploid origin and frequency of polyploid speciation has been estimated by Otto and Whitton [b] to be 2 – 4%. Of the many processes known to create gene...
Polyploidy in Plants JENNIFER A. TATE, ... PAMELA S. SOLTIS, in The Evolution of the Genome, 2005 THE FREQUENCY OF ALLOPOLYPLOIDY VERSUS AUTOPOLYPLOIDY Allopolyploidy has long been considered much more common than autopolyploidy. In fact, autopolyploids were traditionally thought to be very ...
Whole genome duplication is a prominent feature of many highly evolved organisms, especially plants. When duplications occur within species, they yield gen
Mean fruit set in experimental crosses within (grey bars) and between (white bars) the studied species ofEpidendrum.Values represent the mean ± SD (N = 100 plants⁄cross). The first letters indicates the identity of the maternal species: FAL = E. falcisepalum; MAD = E. ...
Describe the genetic and morphological changes associated with crop domestication and breeding. In your answer, give specific examples of genetic and morphological differences between wild and cultivated forms of plants. Describe the following mechanisms of evolution: mutation, geneti...