Friday, 6 January 2006 - 11:30 AM

Evaluation of Nectariless Breeding Lines for Resistance to Plant Bugs

T. P. Wallace and F. A. Harris. Mississippi State University, Dorman Hall, Room 117, Mississippi State, MS 39762

Introduction of Bt technology combined with the boll weevil eradication program has brought about significant changes in the list of important cotton insect pests. The tarnished plant bug (Lygus lineolaris) has stepped up to bat with reduced insecticide applications aimed at worms and the near elimination of applications for boll weevils. Often considered only a minor pest, plant bugs are on the way to replacing boll weevils and worms as a major threat to cotton production in Mississippi. The nectariless trait in cotton has been well documented as a host plant resistance trait through a reduction in plant bug populations. Development of a high quality nectariless variety could enhance pest management when combined with the worm control offered by the Bt gene. This paper reports on nectariless strains developed from a number of different parental genotypes and evaluated in both plant bug infested and controlled plots to aid in selection of resistance to this pest. Strains were also evaluated for yield and fiber quality parameters.

[ Recorded presentation ] Recorded presentation

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See more of The Beltwide Cotton Conferences, January 3-6 2006