Document Type : Original Article
Abstract
In this research the effects of four levels of salinity(0, 5, 10 and 15 dS.m-1) on three cultivars of rapeseed (Okapi, Zarfam, and RGS) were studied. Salinity and cultivar carried out in completely block design in factorial arrangement with three replications. Germination and vigor tests were done on produced seeds in laboratory. Seed viability indices showed no significant difference. These traits were not affected by salinity.Normal seedling percentage in different varieties and salinity treatments were not significantly different. Some of The seed vigor indices such as root length were significantly different between varieties and RGS003had lowest root length, so shoot fresh weight in both standard germination and accelerated aging test increased with increasing salinity. Shoot dry weight increased with increasing salinity (non-significant) and decreased in higher salinity level (15dS.m-1). So the seed production under saline conditions, have no negative impact on seed viability and vigor and even some of the seed vigour indicators will be improved.
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