Fall Armyworm Symposium: Fall Armyworm Resistance in Progeny of Maize Plants Regenerated Via Tissue Culture

D. J. Isenhour, B. R. Wiseman


Plant regeneration of maize genotypes known to be resistant to leaf-feeding by the fall armyworm, Spodoptera frugiperda (J. E. Smith), was attempted via somatic embryogenesis. Successful regeneration from callus tissue cultures was achieved for the maize genotypes `Antigua 2D-118', `MpSWCB-4', `Mp496', and some selected single crosses. Progeny from these regenerates were evaluated under laboratory and field conditions for their levels of resistance to fall armyworm leaf-feeding as compared to their respective non-regenerated parental lines. Significant differences in resistance to leaf-feeding by the fall armyworm were observed between the regenerated and non-regenerated lines. Differences were of a positive as well as a negative nature in regards to the levels of resistance in the regenerates as compared to their non-regenerated parental line. This is further evidence of the potential of somaclonal variation for obtaining agronomically useful traits for crop improvement, in this instance plant resistance to insect attack.

Full Text:


The Florida OJ service is provided through the Florida Virtual Campus (FLVC), the Florida Academic Library Services Cooperative (FALSC), and the George A. Smathers Libraries. | FLVC Privacy Policy.