Multiple Regression, Correlation and Path Analysis of Gall Midge Incidence, Yield and Yield Components in Rice (Oryza sativa L.) Hybrids

The present investigation was carried out to understand the interrelationship and degree of dependence grain yield on its components gall midge incidence elucidate their relative importance. experiment conducted using 42 rice hybrids developed by crossing 6 CMS lines seven testers in Line X Tester mating design, parents four checks. Observations were recorded incidence, fourteen component characters. Correlation coefficient analysis suggested that per plant had highly significant positive association with panicle length (rp = 0.4600**, rg 0.5545**) followed number grains 0.4219**, 0.5125**) productive tillers 0.4006**, 0.4942**) negative non =-0.1154, =-0.1430). Panicle highest direct effect (0.9688) (0.5748). Gall showed a at phenotypic level genotypic plant. Further, it indirect effects via height, plant, panicle, spikelet fertility, hulling percentage, milling kernel breadth as revealed from path analysis. result multiple linear regression exhibited only contributed significantly towards step-wise length, most important characters having R=0.6505 thus, could explain 42.31% total variation yield. 0.95% for yield, which might be due low or resistance midge.