Correlation and regression studies in mustard Wani Mushtaq A.1, Mir S. A. Regional Research Station and Faculty of Agriculture, S. K. University of Agricultural Sciences and Technology of Kashmir, (SKUAST-K), Wadura, Sopore (J&K) - 193 201 1Present address: Directorate of Extension Education, SKUAST-K, Shalimar, Srinagar, (J&K) - 191121 Abstract The effect of sources and levels of sulphur on yield and yield attributes of mustard was studied over two years (rabi 2000–2001 and 2001–2002) at Regional Research Station, Wadura, Sopore. Seed yield and yield attributing characters of mustard increased significantly with the increasing doses of sulphur. Phenotypic correlation coefficients were computed among 12 characters in mustard. Simple correlations based on 2 years data revealed positive and significant correlation of mustard seed yield with the number of siliquae plant−1, number of seeds siliqua−1, number of primary branches plant−1, plant height, test weight, seed yield plant−1, oil content, protein content, seed and stover yield. After computing partial regression coefficients, multiple regression equation was fitted to determine selection index in mustard crop. Number of siliquae plant−1, number of seeds siliqua−1 and seed yield plant−1 had contributed 86.1% variation in seed yield. Hence emphasis should be placed on these characters in selection programme of the crop. Top Key words Correlations, mustard, regression, sulphur. Top |