Analysis on Pollen Flow in a Hybridizing Population between Farfugium hiberniflorum and F. japonicum (Asteraceae: Senecioneae) : Derivation of an Empirical Formula Describing Frequency of Hybridization as a Function of Interspecific Plant Distance
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概要
- 論文の詳細を見る
The frequency of hybrids was monitored using progenies grown from seeds collected from open-pollinated plants in mixed populations of Farfugium hiberniflorum and F. japonicum. The results showed that hybrids are more frequently derived from F. japonicum than from F. hiberniflorum. This directionality of hybridization and extraordinarily high frequency of hybrids among progenies grown from seeds from open-pollinated plants of F. japonicum enabled us to derive an empirical equation describing the frequency of hybridization as a decreasing exponential function of interspecific plant distance. The relationship between these two variables fitted a function describing pollen flow from a particular plant. This finding suggests that interspecific pollen exchange can be viewed simply as a process dependent of interspecific plant distance, and the actual rate of hybridization is determined by the level of cross-compatibility of a particular species.
- 種生物学会の論文
- 1989-12-30
著者
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Yahara Tetsukazu
Botanical Gardens Faculty Of Science University Of Tokyo
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Yamaguchi Hirofumi
Laboratory Of Conservation Ecology Department Of Applied Plant Science College Of Agriculture
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Yamaguchi Hirofumi
Laboratory Of Genetics And Plant Breeding College Of Agriculture University Of Osaka Prefecture
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Yahara Tetsukazu
Botanical Gardens University Of Tokyo
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