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Genetic load and its causes in long-lived plants

โœ Scribed by Edward J. Klekowski

Publisher
Springer-Verlag
Year
1988
Tongue
English
Weight
894 KB
Volume
2
Category
Article
ISSN
0931-1890

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โœฆ Synopsis

Many long-lived plant taxa are characterized by relatively high genetic load levels. This genetic load is manifested as the proportion of offspring that are physiologically handicapped to various degrees. It is proposed that the majority of this load is mutational load and is a consequence of the higher per generation mutation rates that occur in long-lived plants. Higher per generation mutation rates are a result of the chemostat-like accumulation of mutations in the apical initials as the plant grows. Genetic load, therefore, is a function of the postzygotic accumulation of mutations as well as mutations inherited from previous generations.

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