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A distinct developmental stage in the life
cycle of an organism that can be easily recognised. |
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| Plant growth stages: Growth of a
plant occurs in several levels (stages) of organization and
determine the progress of a plant through the seasons. It has
been helpful to divide plant growth into a series of stages even
though many events overlap. Biologists have resorted to this
reductionist approach, which allows simplified interpretations
of what could otherwise be a continuous and complex series of
events. Thus stages are not to be thought of as discrete and
isolated steps, but as landmarks in a continuous developmental
process; they are tools with which to analyze the subtle
differences in plant growth. Timing of these growth stages
varies depending upon environmental factors, such as elevation
and temperature, soil type, availability of moisture, cultivar
selected, and geographic location. |
There is not an universal uniform coding of phenologically
similar growth stages of all flowering plants. But as a general
rule we must identify four principal stages:
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- Vegetative growth
- Reproductive growth
- Senescence
- Dormancy
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A. Vegetative growth
- Germination
- Main shoot growth (comprising Leaf production,
Rosette growth or Stem elongation)
- Formation of axillary shoots (refers to the
development of side shoots and occurs in many plant species)
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B. Reproductive growth
- Inflorescence Emergence
- Flowering
- Development of seed
- Fruit formation
- Ripening
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C. Senescence
- is defined as the processes that occur near the end of a
plant's active life. Conducing to the plant death and
collapsing
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D. Dormancy
- is defined as a suspension of physiological activity that
can be reactivated once it is broken
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