preliminary evaluation of yield and yield components of some khorasanian sesame ecotypes (sesamum indicum l.)

in most region of khorasan, sesame ecotypes have been planted for many years, but there is little information about seed yield and yield components of them. therefore a field experimental was conducted to investigation of yield parameters of 14 sesame ecotypes (msc1, msc2, msc3, msc4, msc5, msc6, msc7, msc8, msc9, msc10, msc11, msc12, msc13 and msc14) in randomized complete block design with three replications at experimental station, collage of agriculture, ferdowsi university of mashhad during 2009. results showed that there were significant difference (p<0.05) between sesame ecotypes for yield and yield components (capsule per plant, seed per capsule and 1000 seed weight). msc9 and msc10 had the highest yield (1520 and 1450 kg ha-1, respectively), and the lowest yield was observed in msc6 and msc8 (490 and 420 kg ha-1, respectively). the highest number of capsules per plant and seed per capsule were obtain from msc2 and msc9 ecotypes. there were significant and positive correlation between seed yield and biological yield (r= 0.75**), harvest index (r=0.41**) and number of capsules per plant (r=0.28*). seed yield of 50 percent sesame ecotypes were more than 1000 kg ha-1, so complementary studies for selection of high yielding sesame is useful.