| Popis: |
Any measurable character which is inherited in a simple Mendelian fashion can be used to identify an individual, a group of individuals or a position on a chromosome, and thus can be used as a genetic marker. Therefore, genetic markers usually result from the action of one or two major gene loci, and differ from polygenic characters such as yield. These markers may be obvious morphological characters such as spicata inflorescences, or may be at the DNA sequence level which can only be detected with complicated biochemical assays. Genetic markers may be either monomorphic or polymorphic, but generally speaking, must be polymorphic to be useful in plant breeding. The utility of the genetic marker depends upon the purpose it is to be used for and how practical it is to assess. This paper provides an introduction to both the current and the potential use of genetic markers in coconut breeding and genetics. |
