Partial synchronization of cell division in root meristem induced by 5-aminouracil |
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Authors: | F J Novák Květuše Schwammenhöferová Jarmila Čihalíková M Ondřej |
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Institution: | (1) Institute of Experimental Botany Czechoslovak Academy of Sciences, Olomouc, Sokolovská 6, 772 00 Praha, Czechoslovakia;(2) Institute of Experimental Botany Czechoslovak Academy of Sciences, Flemingovo nám. 2, 160 00 Praha 6, Czechoslovakia |
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Abstract: | 5-aminouracil induces a partial synchronization of mitoses in barley, onion and garlic root tips. The highest degree of synchronization
has been achieved in garlic where the mitotic index reached the value of about 36%, while in onion and barley the values equalled
about 20%. The concentration causing the maximal synchronization in barley (400–750 ppm) was many times higher than in garlic
(62.5 ppm) and onion (100 ppm). The occurrence of micronuclei was evaluated in garlic, under the conditions when synchronization
was maximal. It was increased nearly tenfold as compared with the control. |
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