Vol. 12, Issue 8 (2023)

Author(s):
Himabindu Parsi, Chtra Shanker and DK Rana

Abstract:
Olfactometer bioassays were carried out to know the effect of HIPVs emitted by rice plants upon leaf folder herbivory, on the parasitism by T. chilonis, with a focus on the role of host plant resistance. The results of the study indicated that T. chilonis significantly preferred infested plants over healthy ones, when given a choice between the two of same variety. The infested plants of W1263 attracted the highest per cent of 91.20 parasitoids over healthy plants. The results of dual choice preferences for different infested cultivars showed that T. chilonis had different attraction rates for volatiles from different rice varieties. The volatiles from W1263 were efficient in attracting the highest per cent parasitoids followed by the varieties TN 1 and TKM 6. The study confirms that a variation in volatile emission exists with the genotype of a plant species which inturn affects the behavior of natural enemies.