Histological Observations on Interspecific Crosses in theGenus Lupinus

摘要

AbstractThe hybridization barriers of interspecific lupin crosses were determined by histological investigations. The crossLupinus hartwegii×L. mutabilis(both of American origin) revealed embryos in the cotyledonary stage as well as cellular endosperm. In the reciprocal combination,L. mutabilis×L. harwegii, embryo development stopped at the end of the globular stage, and simultaneously the coenocytic endosperm did no differentiate into the cellular state. In the combinationL. luteus(European origin) ×L. hartwegii, embryo as well as endosperm development were initiated. Embryo development ended at any early globular stage. Twelve days after pollination the coenocytic endosperm had almost degenerated. WithL. hartwegiias the female, no pollen germination could be observ