Screening for resistance sources and inheritance studies of chilli veinal mottlevirus (ChiVMV) in Byadgi chilli (Capsicum annuum L.)
DOI:
https://doi.org/10.24154/jhs.v21i1.1936Keywords:
Capsicum annuum, chilli veinal mottle virus, inheritance, resistanceAbstract
Forty-nine chilli genotypes were evaluated to assess their response to viral diseases under natural and controlled conditions during kharif 2015-16 and 2016-17. The results revealed that the lowest virus incidence was recorded in DCA-295 (16.36%), DCA-107 (17.36%) and DCA-154 (17.86%). During kharif 2016-17, virus identification using molecular detection and indicator plants confirmed the presence of only ChiVMV in kharif transplanted chilli. Screening through mechanical inoculation under controlled conditions revealed that DCA-295, DCA-154 and DCA-107 exhibited immune reactions and were used for inheritance studies. Genetic analysis of advanced F2 and backcross populations indicated that ChiVMV resistance in DCA-295 and DCA-154 was governed by a single recessive gene, whereas, resistance in DCA-107 was controlled by a single dominant gene. The cross Byadgi Dabbi × DCA-107 recorded the highest frequency of transgressive segregants for fruit width (11.97%), number of fruits/plant (12.67%) and yield/plant (8.45%). These resistance sources represent valuable donor parents for developing ChiVMV resistant Byadgi chilli cultivars, and further studies should focus on fine mapping of resistance loci and validation of robust molecular markers for marker assisted selection.
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Copyright (c) 2026 K C Megharaj, P S AJJAPPALAVARA, T.B. Allolli, H.B. Patil, M. Abdul Kareem, Revanappa, S Ratnakar, M H Tatagar, S Raghavendra (Author)

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