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!
Chilling and Flower Induction
Some plants flower only after passing a winter season. For example, winter wheat is sown in the autumn for harvest in the following summer. It needs exposure to cold. If winter is mild, plants do not flower and the crop fails. It has been shown that winter wheat and many other plants require a period of chilling 0° -2° C for about a week for flower formation. The cold treatment given for flower induction is called vernalisation. The technique of vernalisation was developed in Russia where winter crop required chilling for successful cultivation. The seeds are soaked for small period to initiate germination and then they are buried in the snow. Later, they are planted in the spring when severely cold conditions are over.
Thus chilling is also a stimulus for flower induction. Which part of the plant requires chilling stimulus for floral induction? Experiments show that only the shoot apex receives the stimulus (needs vernalisation) which then is passed on to the other parts of the plant. When the shoot apex that has received the stimulus is pinched off, the lateral shoots flower and if their apices are also pinched off, the side shoots develop and flower. Moreover when extracts of a vernalised plant are applied to a long-day plant growing under short-days the recipient plant flowers. Like light induction, the stimulus can also pass through a graft to a non-vernalised plant. These results show that some kind of flowering stimulus is transmitted from shoot apex to other tissues. The chilling stimulus was named vernalin. The nature of this compound has yet not been identified.
Differentiation is largely a matter of gene control and imprinting (CH3) plays a role, but ___ may also play a role.
The vitamin niacin is a necessary component of NAD. Niacin can be consumed in food or manufactured in the body from tryptophan, an amino acid. How would a person's ability to break
Soybean protein isolates: Soy protein isolates are the most pure and refined soy protein available. Isolated soybean proteins (ISP), or soybean protein isolates, are the mos
Explain about the Light sense You must be aware that when you enter into a cinema hall, you are unable to see and find out your seat initially for a few minutes; b
SKI N GRAFTING - Skin for grafting is taken from another part of body of the same persons. Now it is possible to grow a sheet of skin in culture from a small piece of skin
Explain Endonucleases Endonucleases are nucleases present in the pancreatic juice like RNAase andDNAase. These hydrolyze internal phosphodiester bonds which are located m
Q. What do you mean by Nervous System? Structural Organization: CNS + PNS Functional Organization: only concerned with PNS Sensory (Afferent) -> CNS Motor (Effe
Database Search: Once an open reading frame or the partial amino acid sequence has been pre-determined, the investigator compares sequence with others in the databases using a com
Q. Can you explain Salmonellosis Salmonellosis is a common food bome disease all over the world. There are approximately 1600 different strains (sero types) of Salmonell
Gastrointestinal Antibiotic prophylaxis is recommended for esophageal surgery in the presence of obstruction, which increases the risk of infection. After gas troduodenal surge
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