N. Rajinimala1*, J. Muthamil Kumaran1, E. Santhoshinii1, M. Theradimani1, K. Elanchezhyan2, L. Alwin2, M.I. Manivannan3, M. Paramasivan4 and J. Sheela1
1Department of Plant Pathology, Tamil Nadu Agricultural University, V.O. Chidambaranar Agricultural College and Research Institute, Killikulam
2Department of Agricultural Entomology, Tamil Nadu Agricultural University, V.O. Chidambaranar Agricultural College and Research Institute, Killikulam
3Department of Horticulture, Tamil Nadu Agricultural University, Agricultural College and Research Institute, Killikulam
4Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Agricultural College and Research Institute, Killikulam
Email: rajinimala@tnau.ac.in
Received-07.06.2024, Revised-04.07.2024, Accepted-26.07.2024
Abstract : Chilli leaf curl disease (ChiLCD) caused by Chilli leaf curl virus (ChiLCV) belongs to the genus begomovirus has become a significant issue in reducing the cultivation of chilli in the tropical and subtropical parts of the Indian subcontinent. ChiLCV is transmitted by the vector whitefly [Bemisia tabaci (Gennadius)] ina persistent and circulative manner. Single viruliferous whitefly was able to transmit ChiLCV with the transmission efficiency of nine per cent. How ever, 100 percent transmission of ChiLCV was obtained when ten viruliferous whiteflies were released per plant. Half an hour (0.5 hr) of pre-acquisition starvation period, one hour of acquisition access feeding period (AAFP) and three hours of inoculation access feeding period (IAFP) were required to transmit the ChiLCV. The percentage of transmission was increased with increase in pre-acquisition starvation period, AAFP and IAFP. Hundred percent transmission of ChiLCV was achieved with a pre-acquisition starvation period of 2.5 hrs, AAFP of 24 hrs and IAFP of 12hrs.
Keywords: Whitefly, Acquisition access feeding period, Inoculation access feeding period, ChiLCV
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