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Year : 2023, Volume : 36, Issue : 3
First page : ( 382) Last page : ( 386)
Print ISSN : 0971-8184. Online ISSN : 0976-1926. Published online : 2023 December 21.

Biophysical and morphological basis of resistance against linseed (Linum usitatissimum L.) bud fly (Dasyneura lini barnes)

Kumar Vinay1, Gautham S2, Gupta Kavita3,*, Biradar V.K.4, Kaur Vikender3, Nair Beena4, Kumar Ajay1

1Chaudhary Charan Singh University, Meerut, Uttar Pradesh, India

2Division of Genetics, ICAR-Indian Agriculture Research Institute, New Delhi, India

3ICAR-National Bureau of Plant Genetic Resources, New Delhi, India

4PDKV-College of Agriculture, Nagpur, Maharashtra, India

*Author For Correspondence: kavita.gupta@icar.gov.in

Online Published on 21 February, 2024.

Received:  28  December,  2022; :  1  March,  2023; Accepted:  20  April,  2023.

Abstract

A field experiment was conducted at the research cum instructional farm, College of Agriculture, Nagpur, Dr. PDKV, Maharashtra during rabi 2021-22 with the objective to find the biophysical and morphological basis of resistance against linseed bud fly (Dasyneura lini Barnes). A set of 36 germplasm was sown in RBD in paired rows of 2 m and a spacing of 45 cm × 10 cm. The results indicated that resistant germplasm against bud fly IC498428 and Jawahar-17 had relatively higher sepal thickness (21.18 and 19.64 μ) as well as lower average infestation recorded (8.19 and 9.75%) while susceptible germplasm IC413173 (49.12%), IC498783 (42.70%), IC498924 (42.48%) and EC011748 (45.00%) exhibited minimum sepal thickness (6.90, 9.28, 9.32 and 8.33 μ, respectively). The character association studies showed a highly significant negative correlation (r = -0.852**) between the thickness of sepals and the percentage of bud fly infestation. The correlation between plant height and bud infestation was negative (-0.042) and non-significant.

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Keywords

Bud fly, Linseed, Sepal thickness, Susceptible, Resistance.

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