Describe practical applications of cytokinins.
Answers
Applications of Cytokinins:
1. Cell division:
They promote cell division, however, only in the presence of auxins. The balance of these two hormones determines the growth of root and shoots systems. With high concentration of both Cytokinins and auxins, the tissue continues to grow as a callus. If the concentration of auxins is higher as compared to the cytokinin concentration, rooto develops in the cultured tissue.
2. Breaking of dormancy:
Cytokines break the dormancy of seeds and thus help in their germination.
3. Counteraction of apical dominance:
Auxins and cytokines act opposite to one another in the relation to apical dominance the auxins allow dominance of apical bud while cytokines stimulate the growth of lateral buds. Application of cytokines to lateral buds relieves them from apical inhibition.
4. Delay in senescence:
Cytokinins are their ability to delay normal process of senescence in leave. Disappearance of chlorophyll and degradation of proteins are the two important symptoms of senescence.
cytokynins does the work of cell division and cell differentiation in plants hence they promote growth.
EXPERIMENT-put a plant in open space with sunlight you will find that one side of plant bends this was due to fact that cytokinins prefer to remain in shade thus the part of plant which remain in shade grows more.