Evaluation of Aphid Resistance Among Sugarcane Cultivars in Louisiana

W. Akbar, A. T. Showler, J. M. Beuzelin, T. E. Reagan, K. A. Gravois
2011 Annals of the Entomological Society of America  
Sugarcane (Saccharum L.) in Louisiana is colonized by the sugarcane aphid, Melanaphis sacchari (Zehntner), and the yellow sugarcane aphid, Sipha flava (Forbes). Five commercial sugarcane cultivars, ÔLCP 85-384Ј, ÔHoCP 91-555Ј, ÔHo 95-988Ј, ÔHoCP 96-540Ј, and ÔL 97-128Ј, representing Ͼ95% of LouisianaÕs sugarcane-growing area, were assessed under southern Louisiana Þeld conditions for numbers of the two aphid species. Biweekly sampling during 2007 and 2008 growing seasons indicated cultivar and
more » ... cated cultivar and time effects on aphid frequency. Aphid population peaks occurred during June and July and then crashed. M. sacchari was more abundant than S. flava on almost all cultivars and on all sampling dates during both years of the study. HoCP 91-555 was found to be the most resistant compared with the susceptible Ho 95-988 and L 97-128 cultivars. HoCP 91-555 might be useful in areas of high aphid pressure, and as a source of resistance in cultivar development programs.
doi:10.1603/an11020 fatcat:faesgl66f5akpdegeibszivz54