CORRELATION ANALYSIS OF YIELD AND AGRONOMIC TRAITS IN SPRING SAFFLOWER GENOTYPES AT THREE LEVELS OF IRRIGATION

摘要

To investigate and evaluate the effects of drought on yield and yield components on differentrngenotypes of spring safflower (The resulting genotypes from Internal and foreign varieties)rnExperimental Farm in 2008 as a randomized block design in split plot design with threernreplications under No Drought stress and Tension (two levels of moderate and severe) atrnflowering stage in Miyaneh Islamic Azad University of Agriculture station to the implementationrnwas. Variance and mean comparisons showed high variability between genotypes exist. Duernto time stress (flowering stage) traits such as number of stems per plant, plant height andrntotal number of leaves per plant at different levels of stress were not significantly different.rnSimple correlation coefficients, stepwise regression and path analysis for all genotypes underrndrought stress and different levels of stress were estimated. Under non-stress correlationrncoefficients yield components including grain number in the Capitol, Capitol number of emptyrnseeds per plant with grain yield in the Capitol was positive and significant. The correlationrncoefficients between yield and other traits related to yield in different environmental conditionsrnshowed that the three conditions between performance and weight and there was a significantrnpositive correlation. Stress conditions there significant interaction between genotype andrnenvironmental causes of correlations in terms of value were marked. So, citing the results ofrncorrelation in cases with genotype environment interaction exist must be made with caution.