Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Study on species hybridization within the genus Abies.

Abstract

Controlled crosses were made between A. alba and 9 exotic species of fir growing in Mlyňany Arboretum, Czechoslovakia, during 1976-82. Compatibility existed between species of the same continent and was reduced or absent between continental groups. Within the European/Mediterranean species group, only A. numidica gave viable crosses with N. American firs (A. concolor var. lowiana and A. grandis). The only E. Asian species (A. koreana) was more or less isolated from the others. Leaf morphology was often quite different in the hybrids. Compatibility was correlated with pollen serology but not with karyotype. Hybrid vigour was found in A. alba × A. cephalonica, A. alba × A. cilicica, A. alba × A. nordmanniana, A. cephalonica × A. cilicica, A. cephalonica × A. numidica, A. nordmanniana × A. numidica and A. concolor var. lowiana × A. grandis, but not in A. pinsapo crosses.