The Effects of Aspartic Acid on Some Physiological and Cytogenetical Parameters in Allium cepa L. Seeds Germinated under Salt Stress
Keywords:
aspartic acid; cytogenetical parameters; onion; physiological parameters; salt stressAbstract
The effects of aspartic acid on the seed germination, seedling growth (radicle lenght, radicle number and fresh weight), mitotic index and chromosome aberrations of Allium cepa L. germinated under saline conditions were examined in this study. Salt stress markedly inhibited the seed germination and seedling growth of A. cepa. Moreover, it reduced the mitotic index in the root-meristem cells of the seeds and fairly increased the number of chromosome aberrations. On the other, the inhibitive effect of salt stress on the seed germination, seedling growth and mitotic index was significantly decreased with aspartic acid application. However, this amino acid was ineffective in reducing of salt damage on the mitotic index.
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