Inbreeding depression and mating systems in two species of Linanthus (Polemoniaceae)

Article Abstract:

Mating systems and inbreeding depression have been studied in multiple populations in two species of Linanthus (Polemoniaceae). Outcrossing rates were lower than 0.075 in populations of a small-flowered species, L. bicolor. They ranged from 0.104 to 0.300 in populations of a larger-flowered species, L. jepsonii. Significant inbreeding depression for pollen fertility was see in L. jepsonii populations. That may contribute substantially to overall inbreeding depression. Inbreeding depression was lower in the other species, which was more highly selfing.

United States, Evolution, Fertilization of plants, Plant fertilization

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Inbreeding and outbreeding depression in male courtship song characters in Drosophila montana

Article Abstract:

Male courtship song characters have been studied in Drosophila montana with attention to outbreeding and inbreeding depression and epistasis. The average change coming from inbreeding in most song characters was a few percent, but in male song frequency, the average inbreeding depression was near 14%. This song character is associated, apparently, with fitness.

Finland, Origin of species, Drosophila, Courtship of animals, Mating behavior

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The effect of inbreeding and population hybridization on developmental instability in petals and leaves of the rare plant Silene diclinis (Caryophyllaceae)

Article Abstract:

The effect of inbreeding and population hybridization on developmental instability is discussed based on study in petals and leaves of a rare plant, Silene diclinis (Caryophyllaceae). Fluctuating asymmetry in petals was found to be sensitive to moderate levels of inbreeding and outbreeding. It may be an indicator of genetic stress.

Sweden, Heredity

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