Appraisal of Different Commercially Available Brinjal Genotypes Against Brinjal Shoot and Fruit, Leucinodes orbonalis Guenne (Crambidae: Lepidoptera) Infestation in Khyber Pakhtunkhwa, Pakistan
Appraisal of Different Commercially Available Brinjal Genotypes Against Brinjal Shoot and Fruit, Leucinodes orbonalis Guenne (Crambidae: Lepidoptera) Infestation in Khyber Pakhtunkhwa, Pakistan
Saboor Naeem and Amjad Usman*
ABSTRACT
Screening of brinjal genotypes were conducted to devise an integrated pest management strategy against brinjal fruit borer, Leucinodes orbonalis. For this purpose, seven commercially available brinjal genotypes viz. Nutech Seeds, Durga Seeds, F1 Hybrid Brinjal, Brinjal Malni, Bharat Kaveri F1, Advanta 303 and Black long were tested for resistance/ susceptibility against L. orbonalis in spring and autumn brinjal crop under natural field conditions during 2020, Experiment was carried out under randomized complete block design with three replications. Results revealed that none of the tested genotype was free from L. orbonalis infestation. However, larval counts, shoot and fruit infestation, and yield varied among the genotypes. Based on grade index, Baharat kaveri F1 was the only genotype categorized as resistant, with shoot and fruit infestations of 1.45% and 10.1%, respectively followed by genotypes Durga seed and Nutech seeds, with moderate resistant. Where F1 Hybrid brinjal, Brinjal malni and Advanta 303 were categorized as susceptible genotypes while Black long was declared a highly susceptible genotype with 8.9% shoot and 41.4% fruit infestation. L. orbonalis incidence was higher on the spring crop as compared that on the fall brinjal crop. Furthermore, Baharat Kaveri F1 yielded significantly higher (9539 kg ha-1) followed by Durga Seeds and Nutech Seeds while Advanta 303 and Black Long yielded lower 1992 kg ha-1 and 2350 kg ha-1, respectively. Results further revealed the host plant susceptibility indices (HPSI) values was lower for resistant and higher for susceptible genotype. Over all, Baharat kaveri F1 gave better results as it was resistant to L. orbonalis as well as high yielding than other tested genotypes is recommended to incorporate in IPM program for the management of L. orbonalis.
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