Genetic analysis of budfly resistance and yield components in linseed, Linum usitatissimum L.

摘要

Nine elite parents viz., NL-115, NL-142, NL-151, NL-119, NL-126, Kiran, R-552, Padmini and Shekar were crossed with two parents, JRF-5 and Neelum during 2003. Simple recurrent selection should be utilized to capitalize the additive genetic variation for budfly resistance. Linseed crop suffers from several diseases and insect pest in India (Gill, 1987). The significant yield losses occurs in linseed due to budfly, alternative blight, powdery mildew and rust. The extent of losses by budfly (Dasyneura lini) is ranged from 20 to 97% and 60% due to alternaria blight and powdery mildew (Srivastava et al., 1997). There is a need to develop resistant varieties to budfly, Alternaria blight and powdery mildew to stabilize the yield potential of crop. Therefore, the present investigation was undertaken to study the genetics of budfly resistance and important economic traits through simplified triple test cross analysis of Jinks et al. (1969).