kusalkar, D.V.GAIKWAD VAIJINATH GULAB2017-04-132017-04-132014http://krishikosh.egranth.ac.in/handle/1/5810009618The present investigation entitled “Genetic diversity in summer groundnut (Arachis hypogaea L.)” was undertaken to estimate the genetic variability, path analysis, correlation between dry pod yield and other yield contributing characters and genetic divergence on forty nine germplasm lines and one check of summer groundnut. Total 50 genotypes were evaluated during summer, 2013 season in a randomized block design with two 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, number of branches per plant, number of immature pods per plant, number of mature pods per plant, dry pod yield per plant, hundred kernel weight, oil percent, protein percentage, shelling percentage, harvest index, sound mature kernels, plant height, peg to pod ratio, number of pegs per plant and dry haulm yield per plant. The treatment differences were statistically significant for all the characters except peg to pod ratio and also the magnitude of genotypic and phenotypic coefficients of variations indicated the presence of good amount of variability. The character number of pegs per plant showed the highest heritability followed by dry pod yield per plant, number of mature pods per plant, dry haulm yield per plant, number of immature pods per plant, harvest index, plant height, number of branches per plant, hundred kernel weight, days to 50% flowering, peg to pod ratio, shelling percentage, sound mature kernels and oil percentage. Other characters recorded moderate to low heritability. The number of pegs per plant showed the highest genetic advance. Other characters showed moderate to low genetic advance. dry pod yield per plant indicating the true and perfect association between these characters and dry pod yield. The correlation and path analysis studies revealed that number of mature pods per plant, peg to pod ratio, days to maturity and days to 50 % flowering as good indications of dry pod yield in groundnut. Other characters such as oil percentage and protein percentage may be considered while selecting genotypes for high yield.ennullThesis