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Influence of Biophysical Characters of Oil Palm Accessions on the Intensity of Invasive Whitefly Species, Rugose Spiralling Whitefly (Aleurodicus rugioperculatus Martin) and Bondar Nesting Whitefly (Paraleyrodes bondari Peracchi)

Author: S. Sai Tejasri, Ch. Chinnabbai, ARNS Subbanna, N. Emmanuel and K. Umakrishna

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Abstract

Investigations were carried out to assess the influence of biophysical characters of oil palm accessions on the incidence of invasive whitefly species, rugose spiralling whitefly, Aleurodicus rugioperculatus Martin and bondar’s nesting whitefly, Paraleyrodes bondari Peracchi. The biophysical characters of leaf viz., petiole colour, number of leaflets per leaf, leaflet length (cm), leaflet width (cm), leaflet thickness (mm), crown shape, leaf spiral direction and trichomes/cm2 from twelve oil palm accessions were studied. The correlation studies revealed that among all the biophysical characters, leaf length (r = 0.941) and width of the leaflet (r = 0.895) showed highly significant and positive correlation with RSW and BNW intensity in all the oil palm accessions whereas thickness of the leaflet (r = -0.830) showed highly significant and negative correlation with RSW and BNW intensity.

Keywords

Oil palm accessions, Biophysical characters, intensity of invasive white fly species

Conclusion

Among the different biophysical characters studied, the length and width of the leaflet were found highly significant and positive correlation with pest intensity. Thickness of leaflet showed a strong and negatively significant correlation with pest intensity and the character number of leaflets per leaf was non-significant but positively correlated with pest intensity.

References

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How to cite this article

S. Sai Tejasri, Ch. Chinnabbai, ARNS Subbanna, N. Emmanuel and K. Umakrishna (2024). Influence of Biophysical Characters of Oil Palm Accessions on the Intensity of Invasive Whitefly Species, Rugose Spiralling Whitefly (Aleurodicus Rugioperculatus Martin) and Bondar Nesting Whitefly (Paraleyrodes bondari Peracchi). Biological Forum – An International Journal, 16(12): 110-114