Contents
- 1 What would happen if cytokinins are applied to a plant externally?
- 2 What will happen if you forgot to add cytokinin to the culture medium?
- 3 What is meant by bolting and how is it induced in cabbage plants?
- 4 How do plants respond to cytokinins?
- 5 What will happen when GA3 is applied to rice seedlings?
- 6 When to apply GA3 to a cabbage plant?
- 7 Is there a way to induce flowering in cabbage?
What would happen if cytokinins are applied to a plant externally?
Answer: Cytokinin applied to a plant externally for cell growth. Answer: Cytokinin are mostly produced in root or shoot of a plant.
How do gibberellins induce bolting in cabbage?
Bolting is induced by plant hormones of the gibberellin family, and can occur as a result of several factors, including changes in day length, the prevalence of high temperatures at particular stages in a plant’s growth cycle, and the existence of stresses such as insufficient water or minerals.
What will happen if you forgot to add cytokinin to the culture medium?
The callus develops shoot in the presence of the cytokinin because it is a plant hormone that plays an important role in the cell division mechanism. It helps in organ differentiation (shoot, stems, and leaves). Thus, if we forget to add cytokinin to the culture medium, then the callus will not develop shoot buds.
What can induce bolting in cabbage?
What can induce bolting in a cabbage plant? Application of gibberellins promotes bolting in a cabbage plant. Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.
What is meant by bolting and how is it induced in cabbage plants?
Bolting is a survival mechanism in a plant. It is the elongation of flowering stem before the crop is harvested to produce seeds. This helps in increased reproduction. It is induced by artificial treatment with plant hormone gibberellin.
What is the effect of gibberellin on plant growth?
The most characteristic effects of GA on shoot growth are increased inter-node extension, increased leaf-growth and enhanced apical dominance. Under some circumstances, with some plant species, treatment with GA does not stimulate growth of intact roots, though some root sections do respond by increased growth.
How do plants respond to cytokinins?
They also modulate root elongation, lateral root number, nodule formation, and apical dominance in response to environmental stimuli. Thus, cytokinins are important signaling molecules for regulating growth and development throughout the life of the plant.
What would be expected to happen if :- 5 i you forget to add cytokinin to the culture medium?
If cytokinin is not added to the culture medium, the plants will not grow as desired. It will decrease the growth of the plant and its differentiation into various parts like shoots, buds, fruits and seeds.
What will happen when GA3 is applied to rice seedlings?
(a) If GA3 is applied to rice seedlings, then the rice seedlings will exhibit internode-elongation and increase in height. (b) If dividing cells stop differentiating, then the plant organs such as leaves and stem will not be formed. The mass of undifferentiated cell is called callus.
How does gibberellin induce flowering in cabbage plants?
For example, gibberellin has been known to induce flowering in several longday and vernalization-requiring plants (Lang, 1957); however, the exogenous application of gibberellin did not induce flowering in cabbage without low-temperature treatment (Hamano et al., 2002; Nyarko et al., 2007).
When to apply GA3 to a cabbage plant?
Forty five d after transplanting, or 28 d after removing the heads, 250 mg l-1 gibberellic acid (GA3) was applied to the leaves of plants raised from seed or ratoons respectively, followed by six further applications at 1-week intervals.
What are the effects of seed vernalisation on cabbage?
The combined effects of seed vernalisation and GA3 induced flowering in cabbage plants of variety ‘HRT 009617’ developed from seeds or ratoons. None of the treatments had any adverse effect on the percentage germination of subsequent seeds produced from those varieties that flowered. All showed 89%, or higher germination.
Is there a way to induce flowering in cabbage?
Cabbage (Brassica oleracea var. capitata) requires a long-term low-temperature exposure for floral induction, causing a delay in the breeding cycle. The objective of this study is to develop a method to induce flowering in cabbage without low-temperature treatment, using a grafting method.