Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Phytochrome - Floral Induction
Phytochrome a pigment that exists in two different inter convertible forms was discovered by Hendricks and Borthwrick et. al. and was chemically extracted and purified. Since then exact chemical nature is now established. Phytochrome has two parts the light absorbing portion (chromophore) and the large protein. Action spectra of photoperiodism, germination, and breaking of dormancy etc.-clearly establish phytochrome as the 'photomorphogenesis' pigment as its absorption spectra genuinely overlaps the action spectra of the above phenomenon. Phytochrome was found located mostly in the cell membranes. It exists in red-light absorbing form and far-red light absorbing forms. Phytochrome (R) absorbs red light and is converted into phytochrome (FR), a far-red light absorbing form.
Phytochrome Fr on exposure to far red light is reconverted to phytochrome R. Phytochrome (Fr) can also be converted to phytochrome (R) in prolonged darkness. The action of phytochrome through gene repression and depression production of flowering inducing hormones enzyme activation leading to 'floral apex' from a vegetative apex is roughly understood. But all the steps are not clear yet. Phytochrome regulated morphogenesis results for change in gene 13 transcription. Several phytochrome activated genes have been identified and isolated. One of them is PAL gene.
How to Calculate the Biological Value of Protein? A method for determining the biological value of proteins was developed by Mitchell in 1925. It measures the quantity of dieta
Red-green colour blindness is X-linked recessive. A woman with normal colour vision has a father who is red-green colour-blind. The woman has four sons, none of whom are colour-bli
Q. Show the General Taxonomic Indexes? The indexes serve as an aid to locate quickly the source of origin31 publications of a name, to learn if a particular name has been appli
Composition of Plant and Animal Tissues Food supplies nutrients popularly known as major and minor nutrients based on the quantities in which they are required for the living b
Q What is the kind of digestive system of echinoderms? Echinoderms present a complete digestive system with anus and mouth. Q. Do sea urchins have teeth? Sea urchins ha
As a result of DNA replication two DNA molecules come into existence. Why is it not correct to assert that two "new" DNA molecules are created? What is the name given to the proces
What is the fact of Molecular Biology on which DNA fingerprint is based? The DNA fingerprint, the method of individual identification using DNA, is based on the fact that the D
Define the Root Perforation An endodontic perforation is an artificial opening in the tooth or its root, created by clinician during entry to the canal system or by a biologic
what is bowman''s capsule?
Define Protein requirement during tuberculosis Protein : Achronic infection is marked by a prolonged duration of fever. This leads to wasting of muscles, increased nitrogen
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd