Publication Date
1989
Description
The most important warm-season perennial grass in the southern United States is bermudagrass (Cynodon dactylon [L.]). Fall armyworms (Spodopterafrugiperda [J.E. Smith]) are the most damaging insect pests of bermudagrass. Consequently, researchers have evaluated improved bermudagrass varieties for resistance to fall armyworm (Leuck et al., 1968; Lynch et al., 1983; Quisenberry and Wilson, 1985; Jamjanya and Quisenberry, 1988). Comparison of results from these studies have been contraditory, whereas Leuck et al., (1968) and Lynch et al., (1983) reported Tifton 292 to be extremely resistant (100 % larval mortality) to fall armyworm, Jamjanya and Quisenberry (1988) found it to have at best a moderate level of resistance (24 % larval mortality). Expression of resistance in bermudagrass to fall armyworm may be influenced by a number of factors including the inadvertent use of genetically differentiated fall armyworm strains (rice/bermudagrass and corn strains; Pashley, 1986) and/or different artificial diets to maintain fall armyworm laboratory colonies. Extensive research has been conducted on resistance of bermudagrass to fall armyworm and influence of strain and diet on expression of resistance at the Louisiana State University Agricultural Center. The objectives of these studies have been to determine the effect of fall armywotm strain and dietary conditioning on larval antibiosis.
Citation
Quisenberry, S S., "Resistance in Cynodon Dactlyon to Spodoptera frugiperda: Influence of Strain and Dietary Conditioning" (2025). IGC Proceedings (1989-2023). 22.
https://uknowledge.uky.edu/igc/1989/session6/22
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Resistance in Cynodon Dactlyon to Spodoptera frugiperda: Influence of Strain and Dietary Conditioning
The most important warm-season perennial grass in the southern United States is bermudagrass (Cynodon dactylon [L.]). Fall armyworms (Spodopterafrugiperda [J.E. Smith]) are the most damaging insect pests of bermudagrass. Consequently, researchers have evaluated improved bermudagrass varieties for resistance to fall armyworm (Leuck et al., 1968; Lynch et al., 1983; Quisenberry and Wilson, 1985; Jamjanya and Quisenberry, 1988). Comparison of results from these studies have been contraditory, whereas Leuck et al., (1968) and Lynch et al., (1983) reported Tifton 292 to be extremely resistant (100 % larval mortality) to fall armyworm, Jamjanya and Quisenberry (1988) found it to have at best a moderate level of resistance (24 % larval mortality). Expression of resistance in bermudagrass to fall armyworm may be influenced by a number of factors including the inadvertent use of genetically differentiated fall armyworm strains (rice/bermudagrass and corn strains; Pashley, 1986) and/or different artificial diets to maintain fall armyworm laboratory colonies. Extensive research has been conducted on resistance of bermudagrass to fall armyworm and influence of strain and diet on expression of resistance at the Louisiana State University Agricultural Center. The objectives of these studies have been to determine the effect of fall armywotm strain and dietary conditioning on larval antibiosis.
