Morphological characteristics basis of resistance in Linseed (Linum usitatissimum L.) for bud fly (Dasyneura lini Barnes) in Central Uttar Pradesh

A field experiment conducted for screened 288 elite gen pool of linseed against bud fly infestation at Kanpur, India during rabi 2011-12 and 2012-13. The flowering duration showed significant positive relationship (r=0.9278 and 0.9368) with bud infestation. The maximum flowering duration 32.80 and 31.44 days was recorded on variety A-44 with highest bud infestation of 62.29 and 69.99 percent during respective years against variety C-C-1-2 which had a shortest flowering duration of 8.80 and 12.94 days with the minimum 16.38 and 14.30 percent bud fly infestation. The sepal thickness negative highly significant relationship (r=--0.7224) with bud infestation. The resistant germplasm line maximum sepal thickness (0.49 mm) had relative minimum bud infestation (6.88%) while minimum sepal thickness (0.24 mm) with maximum bud infestation(65.11%), plant height, flower colour did not show significance in bud fly resistance, whereas, flowering duration bud as well as sepal thickness showed significant impact.