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Pakistan Journal of Biological Sciences
Year: 2002  |  Volume: 5  |  Issue: 10  |  Page No.: 1032 - 1040

Screening of Some Brinjal Varieties and Lines Against Brinjal Shoot and Fruit Borer, Leucinodes orbonalis Guenee

M. Mofazzel Hossain, M. Shahjahan, M. Abdus Salam and M.A. Begum    

Abstract: Twenty varieties and lines of brinjal were screened out to observe their resistance level to brinjal shoot and fruit borer Leucinodes orbonalis Guenee (Pyralidae:Lepidoptera) infestation in the field conditions. The infestation varied significantly among the varieties/ lines. The brinjal shoot and fruit borer infestations for different varieties/lines were found in the following order of intensity: Nayankajal >BL095 >BL085 >BL098 >BL0 114 >Khotkhotia-2 >Borka >Laffa >Islampuri >BL045 >Dhohazari-2 >BLO101 >Dhohazari-1 >Khotkhotia-1 >BL096 > Sada ball > Singnath > Uttara > Baromashi > Jhumki. Varietal resistance of brinjal against brinjal shoot and fruit borer indicated significant variations among different brinjal varieties/line. Plant age had significant effect on the incidence of brinjal shoot and fruit borer. Highest percentage (32.89) of brinjal shoot and fruit borer infestation was observed at 70 DAT and lowest (5.18) was found at 40 DAT. The rate of infestation gradually increased with the increase of plant age and then decreased in 100 DAT. Highest percentage of infestation was observed in 70 DAT, which was significantly different from 40 DAT but identical with 100 DAT.

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