Indian Society of Genetics & Plant Breeding
The present research was aimed towards oil quality
improvement in two groundnut cultivars (GPBD-4 and TPG-
41) through induced mutagenesis using EMS and gamma
rays. Six hundred true breeding mutants were isolated in
M3 and were characterized for fatty acid profile at M4/ M5
generations. Twenty high oleate mutants showing
consistent fatty acid profile across the generations were
further evaluated for economic traits. The induced variability
was skewed towards high levels of oleic acid and low level
of linoleic acid in GPBD-4 and it was reverse in TPG-41.
Greater magnitude of induced variability was found for
oleic acid (37.40-75.16%), linoleic acid (9.01-40.30%) and
oleic to linoleic acid ratio (O/L) (0.95-8.34) in mutant
populations at M5. Mutant, GE-113 recorded the highest
increase in oleic acid (74.48%), lowest reduction in linoleic
acid (9.17%) and highest increase in O/L ratio (8.12)
compared to parent GPBD-4. High oleate mutants were
having reduced levels of palmitic acid, long chain saturated
fatty acids and iodine value and were comparable to parents
for economic traits. Mutant GE-113 had pod yield of 25.33
qt/ha comparable to GPBD-4 (27.06 qt/ha).
Keywords: Groundnut, fatty acids, ethyl methane sulphonate, gamma rays, induced variability, high oleate, gas chromatography, calibration.
Year: 2013
Volume: 73
Issue: 4
Article DOI: 10.5958/j.0975-6906.73.4.057
Print ISSN: 0019-5200
Online ISSN: 0975-6906
Kavera info_circle
H. L. Nadaf info_circle
R. R. Hanchinal info_circle
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