Interrelations of eight biomorpohological characteristics such as plant height, days to 50 percent flowering, days to maturity, stem girth, head diameter, seed set, 100-seed weight, oil content and their correlations with autogamy, self fertility and seed yield per plant were examined in a study that included 47 genotypes. The head diameter followed by 100-seed weight, plant height and stem girth showed significant positive âssociation with seed yield. The strongest associâtion was with head dianeter which was also revealed in the path coefficient analysis with the highest positive direct effect. Autogamy and self fertility showed significant negative correlation with seed yield. Days to 5O percent flowering also showed direct negative effects. The positive effect of plant height was through head diameter. Autogamy also showed highly negative association with important yiled-contributing characters such as head diameter, stern girth, plant height and 100-seed weight suggesting such negative associations are to be broken for achieving high yielding genotypes with high autogamy.