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Clarification of the genetic component of hybrids between Phyllodoce caerulea and Phyllodoce aleutica (Ericaceae) in Hokkaido, northern Japan
Author(s) -
KAMEYAMA YOSHIAKI,
KUDO GAKU
Publication year - 2011
Publication title -
plant species biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.419
H-Index - 36
eISSN - 1442-1984
pISSN - 0913-557X
DOI - 10.1111/j.1442-1984.2010.00301.x
Subject(s) - hybrid , biology , backcrossing , taxon , ericaceae , evolutionary biology , natural selection , ecology , botany , zoology , selection (genetic algorithm) , genetics , gene , artificial intelligence , computer science
Abstract Natural hybridization provides great opportunities to understand the interaction of genetics and ecology in determining species boundaries. We examined the genetic relationships of Phyllodoce taxa and revealed that most hybrids were fertile F 1 s and an extremely small number of backcross and no F 2 plants were established in natural conditions. Because this trend was irrespective of regions, we conclude that negative endogenous selection may act after the germination of F 1 seeds and prevent the establishment of later‐generation hybrids. Based on these results, we discuss the ecological and evolutionary significance of natural hybridization in Phyllodoce taxa.