National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Identification of stable performing genotypes in the changing environmental scenario is of prime importance in any breeding material of the present days. Eleven genotypes of Groundnut were evaluated for its stable performance over different dated of sowing at Main Agicultural Research Station, University of Agricultural Sciences, Dharwad, Karnataka. The genotypes were evaluated in randomized block design with three replications. Substantial variation in mean performance of genotypes over different dates of sowing was observed. The mean squares due to genotype × environment (G×E) interactions were significant for dry pod yield indicating the environmental influence on the performance of genotypes. The regression coefficients (bi) of the genotypes ranged from 0.61 to 1.19 and the deviation from regression (S2d) ranged from -0.02 to 0.15. All the genotypes except ICGV-0724, Dh-245 and TMV-2 deviated non-significantly from zero (S2d=0) hence they are stable. Among these genotypes, Dh-230, Dh-241, Dh-246 and Dh-247 shown average responsive as they deviated non-significantly from unity (bi=1) and zero (S2d=0) with above average performance and are more suited to all three dates of sowing. Among the stable genotypes which shown average stable performance across the dates of sowing, Dh-230 (3749.22 kg/ha) followed by Dh-246 (3660.78 kg/ha) and Dh-247 (3598.56 kg/ha) showed higher mean dry pod yield compared to overall mean dry pod yield (3541.08 kg/ha). However the genotype ICGV-0724 is more suitable only for early sowing (4261.33 kg/ha) and G2-52 is more suited for early as well as mid late sowing (4069.78 kg/ha).
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