GENETIC STUDIES AND MANAGEMENT OF BACTERIAL WILT IN BRINJAL [Solanum melongena L.)
Loading...
Date
2007-08-31
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Agricultural Sciences GKVK, Banglore
Abstract
The investigation on genetic studies and management of bacterial
wilt in brinjal (Sotonum melongena L.) were carried out during 2003-06 In
the Olericulture Unit. Department of Horticulture. University of
Agricultural Sciences. Dhanvad. The nine genotypes including local
cultivars were used for the study based on their per se performance and
horticultural traits.
TXventy hybrids developed using line x tester design were shown
wide range of resistance to bacterial wilt with considerable magnitude of
heterosis for yield and quality attributing characters. The two crosses
DWD-1 X Malapur and DWD-1 x Rabakavi were found to be best yielders
and resistant to wilt incidence over two years and these two crosses can
be commercially cultivated in the farmers field. Combining ability analysis
revealed that all the characters studied were predominantly governed by
non-additive gene action.
The inheritance study for bacterial wilt resistance in four
F2 populations has fit into a 3:1 ratio indicates the single dominant gene
governed the resistance. Among the segregating populations studied, very
high frequency of transgressive segregants for fruit weight (8.91%)
and fruit yield per plant (6.44%) were observed in the F2 population of
DWD-1 X Malapur.
Among mutagens. gamma rays response was good compcU"ed to
ethyl methane sulphonate for the improvement of local cultivar Malapur
for the bacterial wilt. The bacterial wilt resistant mutants were observed in
the 5 and 10 Krd gamma rays treatments in the M2 generation and no
fruit set was observed in Mi generation of EMS treatments.
The impact of soil amendment on bacterial wilt incidence revealed
that the gypsum level 250 kg per ha reduced the wilt incidence
significantly compared to control and lower levels. In the crop rotation
experiment the wilt incidence has reduced to 59.10 and 58.52 per cent
with maize and sorghum, respectively compared to monocropping
sequence (82.31%) of brinjal.
Description
Keywords
null