Evaluation of Resistance of Linseed Genotypes against Bud Fly, Dasyneura lini Barnes (Diptera: Cecidomyiidae): Implications for Sustainable Crop Improvement

Experiments were carried out at the Research Farm of Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India during Rabi 2021-22, 2022-23 and 2023-24 to evaluate the resistance of linseed genotypes against bud fly, Dasyneura lini (Barnes) for sustainable crop improvement. A total of 77 genotypes screened out for resistance against bud fly, Dasyneura lini, and were categorized and replicated thrice in RBD. Out of 77 genotypes, 40 genotypes were resistant, 34 genotypes were moderately resistant and 03 genotypes moderately susceptible to bud fly infestation. The observed resistant genotypes are BRLS 128, BRLS 111-2, BRLS 129, BRLS 125, BRLS 126-2, BRLS 102, BRLS 127-2, BRLS 108-1, BRLS 111-1, BRLS 126-4, BRLS 126-1, BRLS 108-3, BRLS 106-1, BRLS 120-2, BRLS 127-1, BRLS 105-1, BRLS 130-1, BRLS 112-2, BRLS 10-8-1, BRLS 110-7, BRLS 103, BRLS 106-2, BRLS 126-5, BRLS 110-4, BRLS 107-1, BRLS 111-3, LCK 8682, NDL 2015-03, BRLS 102-1, BRLS 116, SLS 64, BRLS 112-3, BRLS 119, BRLS 107, BRLS 120-4, BRLS 120, BRLS 109-5, BRLS 124-2, Sabour Yellow and BRLS 121. The resistant genotypes observed against bud flies may be used as donor parents in the multiple resistance breeding programme of linseed.