kusalkar, D.V.DHAYGUDE SNEHAL SHRIMANT2019-08-232019-08-232017http://krishikosh.egranth.ac.in/handle/1/5810123384The present investigation entitled “Identification of summer groundnut ( Arachis hypogaea L.) genotypes for high oil content.” was undertaken to estimate the genetic variability, path analysis, correlation between dry pod yield and other characters. Total seven F2 crosses each cross having 50 IPS were evaluated during summer, 2016 season in a randomized block design with three replications at All India Co-ordinated Research Project on Groundnut, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar (M.S.). Observations were recorded on the traits viz., days to 50% flowering, days to maturity, plant height, number of branches per plant, number of mature pods per plant, dry haulm yield per plant, dry pod yield per plant, hundred kernel weight, shelling percentage, harvest index, oil content, protein content. The treatment differences were statistically significant for all the characters and also the magnitude of genotypic and phenotypic coefficients of variations indicated the presence of good amount of variability. The character Plant height, Mature pods per plant, Dry pods yield per plant, Hundred kernels weight, Harvest index (dry weight basis) have high heritability with high genetic advance. Days to 50% flowering have high heritability with medium genetic advance. Days to maturity show high heritability with low genetic advance. Shelling percentage, Sound mature kernels, Oil percentage, Protein percentage showed medium heritability with low genetic advance. The estimates of phenotypic coefficient of variation (PCV) were marginally higher than the estimates of genotypic coefficient of variation (GCV) for all the characters studied indicating the influence of environment on these traits. Heritability is used to predict the resemblance between parents and their progeny. Whereas, the genetic advance provides the knowledge about expected gain for a particular character after selection. The genotypic correlation coefficients were higher in magnitude than their corresponding phenotypic correlation coefficients. The characters, harvest index, number of mature pods per plant, days to maturity, number of branches per plant, dry haulm yield per plant recorded highly significant and positive correlation with dry pod yield per plant. Whereas, hundred kernels weight exhibited non-significant and positive association with dry pod yield per plant. The path coefficient analysis revealed that harvest index (dry weight basis), dry haulm yield per plant, hundred kernels weight, plant height, protein percentage, oil percentage had the highest positive direct effect on dry pod yield indicating the true and perfect association between these characters and dry pod yield. The characters, days to 50% flowering, number of branches per plant, shelling percentage, and sound mature kernels showed negative direct effect on dry pod yield. The result of this investigation showed that oil content of kernels in groundnut is determined by architecture of cultivar and environmental factors. However the efficacy of selection depend on knowledge of the genetic control of the measured traits. Plants 313, 326, 312, 301, 303,311, 319, 321, 348 of cross TAG-24 X SB-XI showed high oil content. The range for oil content is between46.00-50.36 percentage. Twenty one plants oil content significant above mean. This cross of groundnut can be use for further selection for oil improvement.ennullThesis