| Genotypic variation in sesame salt tolerance during germination under NaCl stress |
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| DOI：10.7606/j.issn.1000-7601.2014.06.013 |
| Key Words: sesame NaCl stress genotype salt tolerance variation sesame germplasm |
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| Abstract: |
| Effect of NaCl on seeding emergence and growth of sesame during germination was analyzed. The results indicated a modest effect on seeding emergence of NaCl treatment with the range of 0%～0.4%. Length of bud and simple vigor index decreased continuously with increasing of concentration of NaCl. The root length and seeding fresh weight varied with sesame cultivars. Some increased first but decreased later with increasing concentration of NaCl, while others decreased continuously. The 0.4% NaCl treatment led to a significant decrease in root length, length of bud, seeding fresh weight and simple vigor index, indicating that this could be used as reference concentration for screening and identification of salt tolerance in sesame germplasm. The cluster analysis divided the 39 germplasm into two groups, 12 germplasm with salt tolerance and the others being salt sensitive. In addition, there was minimal difference in salt tolerance between newly released cultivars and local salt tolerance cultivar. |
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