Authenticity identification and leaf blight resistance evaluation of the F1 hybrids from two Lilium cultivars 'Sorbonne' and 'Francia'

This study identified the genetic transmission pattern of the leaf blight resistance of Lilium species based on resistance distribution. A total of 133 hybrids of the 'Sorbonne' (female parent, highly resistant to Botrytis elliptica) and 'Francia' (male parent, highly susceptible to B. elliptica) cultivars were selected by inter-simple sequence repeat polymerase chain reaction. Among them, 17 were highly resistant, 42 moderately resistant, 46 moderately susceptible, and 28 susceptible. One F1 plant showed greater resistance than 'Sorbonne', and 17 showed greater susceptibility than 'Francia'. Disease resistance from 'Sorbonne' could be inherited and was a typical quantitative trait determined by polygenes.