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RELATIONSHIP BETWEEN MORPHOLOGICAL CHARACTERS OF DIFFERENT AUBERGINE CULTIVARS AND FRUIT INFESTATION BY LEUCINODES ORBONALIS GUENEE

HUMAYUN JAVED^1*, ATA-UL-MOHSIN¹, MUHAMMAD ASLAM¹, MUHAMMAD NAEEM¹, MUHAMMAD AMJAD² AND TARIQ MAHMOOD³
 

Abstract: Response of different aubergine cultivars against brinjal shoot and fruit borer (Leucinodes orbonalis Guenee.) was evaluated at National Agriculture Research Centre, Islamabad during 2007-08 and 2008-09. The results reflected different levels of infestation in all cultivars by the pest. Cultivar Naeelam showed maximum fruit infestation (58.60 and 48.09%) followed by Black long (47.93 and 33.31%), while minimum was observed in Nirala with 24.75 and 21.57% fruit infestation during 2007-08 and 2008-09, respectively. Similarly, shoot infestation was found maximum in Naeelam (43.15 and 33.75%) followed by Kanha-091 (37.72 and 28.73 %) and Nirala was found to be least attacked by the pest showing 19.27 and 15.81% shoot infestation during 2007-08 and 2008-09, respectively. The correlation of different morphological plant characters with fruit infestation indicated very strong and negative correlation between fruit infestation and leaf trichomes, stem thickness and stem hair density. A negatively significant correlation was found between fruit infestation and plant height (r = – 0.716), crown hair density (r = – 0.672) while the correlations of leaf hair density (r = – 0.623), and leaf area (r = – 0.613), was also significant and negative but not so strong. There was positive correlation with fruit yield (q/acre) and positive and non significant correlation with number of primary branches/plant with r-value 0.661and 0.319, respectively.

¹Department of Entomology, PMAS- Arid Agriculture University Rawalpindi, Pakistan.
²Oil Seed Programme, NARC, Islamabad, Pakistan.
³Department of Environmental Sciences, PMAS-Arid Agriculture University Rawalpindi, Pakistan.
^*Corresponding Author: hjhumayun@gmail.com