Flowering - development of plant, Biology

Flowering - Development of plant

One of the major changes that occur during the life cycle of a plant is the transition from vegetative stage to the flowering stage. In this transition the vegetative meristems change into flowering meristems which form sepals, petals, carpels and anthers instead of branches and leaves. It is a major morphogenetic change. In some plants this change occurs once in life-time and after flowering, fruit and seed set, the plant dies. Whereas, in others the flowers are produced every year, as in trees. Now the question arises, is it due to an internal annual rhythm in the plants or a requirement for particular environmental condition? In this section we will tell you what controls flowering and how this transition occurs.

One of the major factors that affects flowering, as we know today is related to the effects of the environment and in particular to the duration of light/dark 24 hour cycle or temperature. However, it took a number of years for scientists to realise this fact. We will describe two experimental observations which suggested that the length of the day determines the behaviour of plants with respect to flowering. The seeds of soya bean (Glycine max) were planted at different times in the month of May, June, July and August. Even though planted at different times, all of them flowered in the month of September. The first planted seeds took 125 days to flower whereas the last set flowered in only 58 days. These observations show that at a particular time of the year the day length was suitable for plants to flower. The second observation was made on a mutant of tobacco called Maryland mammoth, because of the large size of its leaves. In fields it does not flower in winter, however, in glass houses when light duration was provided like that of summer, it was possible to induce flowering even in winter in these plants.

Posted Date: 1/17/2013 6:43:58 AM | Location : United States







Related Discussions:- Flowering - development of plant, Assignment Help, Ask Question on Flowering - development of plant, Get Answer, Expert's Help, Flowering - development of plant Discussions

Write discussion on Flowering - development of plant
Your posts are moderated
Related Questions
Exceptions to the Cell Theory Viruses, however, are not the only exception to the Cell Theory as formulated earlier. This has led scientists to take a much broader view of the

Dyslipidemia is an important correctable factor for Coronary Artery Disease. There is a strong, independent, continuous, and graded relation between total cholesterol (TC) or low-

Define Phosphorous distribution in plasma? In plasma, phosphorus is distributed in different forms. Figure: Phosphorous distribution in plasma Inorg

If the results of an experiment turn out differently then you expected, what does that mean? A. The experiment was a failure B. You did not follow scientific method C. You should e

Measurement of solar energy input A variety of instruments have been designed to measure the energy of solar radiations of all wavelengths as well as of a particular range of w

Explain Fats Fats: As you are already aware,  fats are reservoir  of  calories. In  addition  to carbohydrates,  fats can  also be  an important  source of  needed calories.

What is the difference among systole and diastole Systole and diastole are the two stages into which the cardiac cycle is separated. Systole is the stage when the contraction o

Dengue Dengue fever is a viral disease transmitted by mosquito bites that occurs worldwide in tropical and subtropical areas. Major epidemics have occurred in recent years in

a) Mention the number of primers needed in each cycle of polymerase chain Reaction (PCR) . Write the role of primers and DNA polymerase in PCR. b) Give the characteristic fea

Q. What do you mean by Current Impediments? Given the impressive list of past achievements, we expect that quantitative process to biological problems will continue to repay us