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Genetic analysis of morphological variability in threePlantagospecies with different mating systems

✍ Scribed by K. Wolff

Publisher
Springer
Year
1991
Tongue
English
Weight
832 KB
Volume
81
Category
Article
ISSN
0040-5752

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✦ Synopsis

Morphological variability in three Plantago species possessing different mating systems - P. Major, P. coronopus, and P. lanceolata - was analyzed. From each species several populations were analyzed. In comparing the species, it appeared that both the inbreeding P. major and the outbreeding P. lanceolata showed a high degree of morphological differentiation between populations. It was hypothesized that the absence of population differentiation for the species with a mixed mating system, P. coronopus, was caused by high adaptive plasticity. Plasticity is probably the predominant mechanism by which this species copes with different environments. There were considerable differences between populations within each species for their levels of variability and their heritabilities. It appeared that besides the influence of the mating system, selection may diminish morphological variability in the case of strong directional selection, especially in P. major and P. lanceolata.

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