Resistance to Beet Armyworm, Hemipterans, and Liriomyza spp. in Lycopersicon Accessions

Resistance of 14 accessions/cultivars of Lycopersicon spp. to two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae), in laboratory and greenhouse

مقاومت چهارده رقم و لاین از گونه‌های مختلف جنس Lycopersicon نسبت به کنه‌ی تارتن دو‌لکه‌ای، Tetranychus urticae Koch، در آزمایشگاه و گلخانه‌ بررسی شد. مطالعات آزمایشگاهی بر اساس دو روش زیست‌سنجی پونز (thumbtack) و دیسک برگی (leaf disk) صورت گرفت. گونه‌های Lycopersicon hirsutum و L. pennelii بیش‌ترین تعداد کنه روی پونز را داشتند. بیش‌ترین تعداد تخم (48/0‌ ± ‌15/5 تخم بر ماده در روز) روی‌L. pimpin...

Pro-active Management of Beet Armyworm (Spodoptera exigua) Resistance to the IGRs, Tebufenozide and Methoxyfenozide

Susceptibility to tebufenozide and methoxyfenozide of beet armyworm (Spodoptera exigua) from the southern United States and Thailand was determined through exposure of first and third instar larvae to dipped cotton leaves. LC50 estimates of first instar larvae ranged from 0.377 to 32.7 micrograms of tebufenozide per milliliter and 0.034 to 11.5 micrograms of methoxyfenozide per milliliter. LC50...

Rice Sheath Blight Disease Resistance Identified in Oryza spp. Accessions

Studies of Resistance of Beet Armyworm (Spodoptera exigua) to Spinosad in Field Populations From the Southern USA and Southeast Asia

Susceptibility to spinosad (Success®/Tracer®) of beet armyworm (Spodoptera exigua) from the southern U.S.A. and Southeast Asia was determined through exposure of third instar larvae to dipped cotton leaves. LC50 values of field populations ranged from 0.6 to 14 μg spinosad/ml. Field populations were 3.0 to 70-fold less susceptible to spinosad than was a susceptible reference population. The lea...

resistance of 14 accessions/cultivars of lycopersicon spp. to two-spotted spider mite, tetranychus urticae (acari: tetranychidae), in laboratory and greenhouse

fourteen accessions and cultivars of lycopersicon spp. were studied to evaluate their resistance to two-spotted spider mite, tetranychus urticae koch, under laboratory and greenhouse conditions. in vitro studies were carried out using thumbtack and leaf disk bioassays. lycopersicon hirsutum and l. pennellii accessions supported more mites on the tack. the highest number of eggs (5.15 â± 0.48 eg...