inspection of some morphological and physiological traits in twelve iranian onion population (allium cepa l.)

in this research seed of twelve population of iranian onion were gathered from different part of country (horand ahar, germez rey, goligesa zanjan, germez azarshahr, sefid kashan, zard neishabur, sefid gom, dorche esfahan, sefid neishabur, germez neishabur, sefid fathabad, es hag abad neishabur). the experiment was factorial based on a randomized complete block design (rcbd) was conducted in agricultural reasearch and natural resources center of east azarbayjan with three replications. analysis of variance showed different between cultivars in bulb pungency, dry matter, total yield, percent of fusi form bulbs, bulb diameter, bulb neck diameter and number of outer dry skin. some of traits such as bulb neck diameter, number of outer dry skin are important in bulb storage. variation of these traits according to vast diversity of iranian onion population is important and helpful for culture and storage.