Study on induced mutations in kharif sorghum (sorghum bicolor (L.) moench)
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Date
2020-09-30
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Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Abstract
The present investigation was undertaken on “Study on induced mutations in Kharif sorghum (Sorghum bicolor (L.) Moench).” The experimental material comprised of different mutagenic treatments treated with different concentrations viz., T1 (0.1%), T2 (0.2%), T3 (0.3%) were EMS treatments and T4 (10 kR + 0.1% EMS), T5 (20 kR + 0.1% EMS), T6 (30 kR + 0.1% EMS) and T7 (40 kR + 0.1% EMS) were combination treatments and T8 (dry control) and T9 (wet control) treatments of sorghum cultivar ‘PVK 801’. All these treatments were grown in randomized block design with three replications during Kharif 2019.
Observations were recorded on eleven yield and yield contributing characters. Effects of various treatments on eleven characters were studied in M2 generation only. The genetic variability was significant for yield and yield contributing characters among the M2 generation. The highest frequency and spectrum of chlorophyll mutation and also frequency with spectrum of viable mutation were observed in 20 kR + 0.1% EMS treatment. The better mean performance in 20 kR + 0.1% EMS treatment for most of the characters.
The high GCV, PCV, heritability and GAM were observed for number of grains per primary and grain yield per plant. The positive significant correlation was noticed for grain yield per plant with number of primaries per panicle, flag leaf area and 100 seed weight.
The path coefficient analysis revealed that, the characters viz., days to panicle initiation, days to maturity, plant height, number of primaries per panicle, panicle length, panicle width and 100 seed weight exerted direct positive effect on grain yield per plant. Some desirable mutants was recorded viz., dwarf, early, compact panicle, large panicle, broad leaves and bold seed character.