Stem blight resistance of Asparagus kiusianus and its hybrid with A. officinalis

摘要

Resistance of cultivated asparagus (Asparagus officinalis), wild A. kiusianus and their interspecific hybrids to stem blight caused by Phomopsis asparagi (Sacc.) Bubak was evaluated. A. kiusianus had higher resistance than A. officinalis although there were individual variations. The resistance of interspecific hybrids between A. officinalis and A. kiusianus was mostly intermediate, but some individuals had strong resistance equivalent to A. kiusianus. The results suggest that it is possible to introduce the resistance of A. kiusianus to stem blight into A. officinalis through interspecific hybridization for further Asparagus breeding.