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Physicomorphic Mechanism of Resistance in Brinjal Genotypes against Shoot and Fruit Borer, Leucinodes orbonalis (Guenee)

Author: Ch. Chinnabbai, S. Dayakar, A. Sujatha, P. Anil Kumar and S.K. Nafeez Umar

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Abstract

Development of brinjal hybrids/varieties with natural resistance to brinjal shoot and fruit borer is one of the effective and eco-friendly alternate methods for combating the pest. The biophysical and morphological characteristics of shoot and fruits are correlated with attraction, feeding and oviposition of the pest. Therefore, identification of biophysical characteristics from insect resistant genotypes is most practical significance. Physicomorphic characters responsible for resistance in brinjal genotypes towards the effective management of shoot and fruit borer was investigated during kharif 2017-18 at college of Horticulture, Venkataramannagudem using sixty genotypes and three check cultivars. Mean shoot thickness recorded was in the range of 0.23 to 0.63 cm, trichome density of leaf lamina/cm² 353.50 to 758.05, trichome density of shoot/cm² 243.70 to 560.60, plant height 51.87 to 102.75 cm, plant spread 69.17 to 112.41 cm, number of branches 5.80 to 9.20, fruit length 3.21 to

Keywords

Physicomorphic meachanism of resistance, Brinjal genotypes, Leucinodes orbonalis.

Conclusion

Development of brinjal hybrids/varieties with natural resistance to brinjal shoot and fruit borer is one of the effective and eco-friendly alternate methods for combating the pest. The biophysical and morphological characteristics of shoot and fruits are correlated with attraction, feeding and oviposition of the pest. Therefore, identification of biophysical characteristics from insect resistant genotypes is most practical significance. Physicomorphic characters responsible for resistance in brinjal genotypes towards the effective management of shoot and fruit borer was investigated during kharif 2017-18 at college of Horticulture, Venkataramannagudem using sixty genotypes and three check cultivars. Mean shoot thickness recorded was in the range of 0.23 to 0.63 cm, trichome density of leaf lamina/cm² 353.50 to 758.05, trichome density of shoot/cm² 243.70 to 560.60, plant height 51.87 to 102.75 cm, plant spread 69.17 to 112.41 cm, number of branches 5.80 to 9.20, fruit length 3.21 to

References

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How to cite this article

Chinnabbai, Ch., Dayakar, S., Sujatha, A., Kumar, P.A., and Umar S.K.N. (2021). Physicomorphic Mechanism of Resistance in Brinjal Genotypes against Shoot and Fruit Borer, Leucinodes orbonalis (Guenee). Biological Forum – An International Journal, 13(3):