The better understanding of selecting an effective and efficient #mutagen may provide better chances to induce high frequency of desirable
mutations in any crop breeding program. Present study was carried out
with the eggplant (#Solanum melongena) variety Pusa Uttam to test
the mutagenic effectiveness and efficiency of gamma ray, #methyl methane sulphonate (MMS), #dimethylsulphate (DMS) and diethyl sulphate (DES) to
induce maximum macro-mutations which could eventually be exploited in
future as viable and economically important traits. Mutagenic
effectiveness and efficiency were calculated as per the standard
formulae. In general, the results indicated that mutagenic effectiveness
and efficiency decreased with increase in mutagenic treatments.
Moreover, the lower or intermediate treatments of gamma rays as well as
the #alkylating agents were found more effective and efficient in
creating maximum mutations with less biological damage. The order of
mutagenic effectiveness was MMS>DMS>DES>gamma ray. The order of
mutagenic efficiency with regard to inhibition in germination (Mp/I)
was same as the effectiveness, while, the orders of efficiency with
regard to pollen sterility (Mp/S) was DMS>DES>MMS>gamma ray.
The alkylating agents were found to be more potent than gamma rays in
effectively and efficiently widening the genetic base of variability in
eggplant and provided greater chances for selecting different desirable
characters in future breeding program.
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