Agricultural Reviews

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Agricultural Reviews, volume 36 issue 4 (december 2015) : 277-286

Character association and path coefficient analysis for yield, yield attributes and water use efficieny traits in grounndut (Arachis hypogaea L.) - A  review

K. John*, P. Raghava Reddy1, P. Hariprasad Reddy2, P. Sudhakar, N.P. Eswar Reddy2
1<p>Regional Agricultural Research Station,&nbsp;Tirupati-517 502, India.</p>
Cite article:- John* K., Reddy1 Raghava P., Reddy2 Hariprasad P., Sudhakar P., Reddy2 Eswar N.P. (NaN). Character association and path coefficient analysis for yield, yield attributes and water use efficieny traits in grounndut (Arachis hypogaea L.) - A review . Agricultural Reviews. 36(4): 277-286. doi: 10.18805/ag.v36i4.6664.

Correlation analysis provides useful information for basis of selection for trait like pod and seed yield. Seed yield is the most economic as well as very complex character in nature because it is governed by polygene and greatly influenced by environmental factors. The estimate of genotypic correlation coefficients in general higher than their corresponding phenotypic correlations indicating strong inherent association among the traits. Pod yield in groundnut is a complex and depends upon the interplay of number of components attributes. Primary yield components of groundnut viz., pod size, sound mature kernels, shelling percentage, 100 kernel weight, kernel yield and number of mature pods per plant showed positive correlation with each other and with pod yield. A clear picture of contribution of each component is the final expression of character would emerge through the study of correlation and causation of path concept revealing different ways in which component attributes influence the complex traits. Path coefficient analysis helps in formulating the selection criteria based on these direct and indirect effects. In order to achieve the goal of increased production by increasing the yield potential of crop, knowledge of direction and magnitude of association between various traits is essential for plant breeders. 


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