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The damage intensity of teak defoliator, Hyblaea puera Cramer (Lepidoptera : Hyblaeidae) and leaf skeletonizer, Eutectona machaeralis (Walker) (Lepidoptera : Pyralidae), was measured in 12 teak clones of Madhya Pradesh origin, planted during the year 1978 in teak seed orchard (TSO), State Forest Research Institute, Jabalpur (M.P.). On the basis of three years damage assessment (2002-2004), field observations revealed differential clonal response due to variation in feeding potential among the teak clones. Two clones, viz. BLC-4 and BLC-11 of Balaghat Lalbarra/Lanjhi were recorded to be the least preferred (ranked as highly resistant), whereas three clones, viz. BBC-13 of Betul Baretha, BLC-10 of Balaghat Lalbarra/Lanjhi and MTC-3 of Mandla Tikaria were observed as most preferred (ranked as most susceptible) to both teak defoliator and leaf skeletonizer. Highly resistant/resistant teak clones showed early-mid leaf flushing whereas highly susceptible/most susceptible clones revealed mid-late/late leaf flushing. The differential response of H. puera and E. machaeralis may be due to variation in genotypes of teak.
Madhya Pradesh, teak clones, screening, resistance, defoliator; skeletonizer.
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