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 |
In the present investigation, estimates of genetic variability, heritability and genetic advance were assessed for nine different characters in the F3 population derived from four groundnut crosses, viz., CO 7 × VRI Gn 6, TMV 2 × VRI Gn 6, TMV Gn 13 × VRI Gn 6 and VRI 2 × VRI Gn 6. Considering the mean performance, the cross derivative TMV Gn 13 × VRI Gn 6 registered superiority for the characters viz., 100-pod weight (g), 100-kernel weight (g) and sound mature kernel (%). Apart from these characters, the cross VRI 2 × VRI Gn 6 for shelling (%) and sound mature kernel (%), and CO 7 × VRI Gn 6 for the trait late leaf spot and rust score also showed higher mean performance. High percentage of PCV, GCV, heritability coupled with high GAM values were recorded by number of pods plant-1, pod yield plant-1 (g), kernel yield plant-1 (g), late leaf spot score and rust score in varied crosses. Selection would be effective for these traits in respective crosses to obtain promising progenies. Regarding the population distribution, significant and negative skewness was observed in all the four crosses for shelling (%) and sound mature kernel (%). Leptokurtic/mesokurtic nature was noticed in most of the traits understudy. Thereby, directional selection will effectively improve the mean performance of these traits. Hence, based on mean and various genetic parameters, the cross CO 7 × VRI Gn 6 is considered as superior for late leaf spot and rust resistance in groundnut.
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