EVALUATION OF BACTERIAL WILT DISEASE RESISTANT GREEN ROUND PRE-BREEDING LINES IN BRINJAL (Solanum melongena L.)
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Date
2017-06
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University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru).
Abstract
An investigation on “Evaluation of bacterial wilt disease resistant green round prebreeding lines in brinjal (Solanum melongena L.)” was carried out in the research block of
Department of Vegetable Science, COH, Bengaluru. Seven green round pre-breeding lines of F3:4
generation of Raidurga Green Round x West Coast Green Round along with their parents and
checks (Arka Anand and Arka Kusumakar) were evaluated for interfamily and intrafamily
variability along with bacterial wilt resistance after artificial inoculation. The results revealed
that the range of variation between the average performance of lines was lesser when compared
to intrafamily variability. None of the characters had shown high PCV and GCV estimates in
interfamily variability studies indicates the lack of high variability between the average
performance of segregating lines for these characters. The difference between PCV and GCV
was comparatively higher in interfamily variability and it was lesser in intrafamily variability
studies which indicated the characters were less affected by the environment within the line.
High heritability with high GA and GAM was observed for yield per plant in interfamily
variability studies, it indicated suggested good scope for selection between the lines for this
character. Interfamily variability studies revealed high heritability coupled with high GA, GAM
and GCV for fruit weight and yield per plant in all the lines indicating the major role of additive
gene action for inheritance of these traits. Among the pre-breeding lines 12-23-30-1, 12-23-30-2,
12-23-249-10 and 12-23-249-12 were found resistant to bacterial wilt. Further 10 plants viz., 12-
23-30-1-41, 12-23-30-1-42, 12-23-30-1-32, 12-23-30-1-18, 12-23-30-1-7, 12-23-30-2-7, 12-23-
30-2-12, 12-23-249-10-54, 12-23-249-10-55 and 12-23-249-10-29 were selected based on fruit
shape, fruit colour, yield and per cent bacterial wilt disease incidence for further evaluation of
F4:5 generation.