Effect of temperature, Biology

Assignment Help:

Effect of Temperature

Certain plants such as the winter rye (Secale cereale) and the biennial strain of henbane (Hyoscyamus Niger) require exposure to low temperature conditions before they start flowering. A phenomenon known as 'vernalization' or 'Yaronization' was noted by the Russian Plant physiologist Gustav Gussner in 1915. Here also embryo or shoot apex seems to be the site of perception and the role of a hormone 'Vernalin" is suggested. Unfortunately like florigen, vernalin has been still elusive. Gibberellin treatment is known to substitute for cold treatment.


Related Discussions:- Effect of temperature

Plot the amount of dna in the nucleus, Plot the amount of DNA in the nucleu...

Plot the amount of DNA in the nucleus of spermatogonia from the G1 stage prior to the first meiotic division through the completion of meiosis. Label each of the major stages of th

What is hemocoel. explain in detail, What is Hemocoel? Explain in detail. ...

What is Hemocoel? Explain in detail. Principle body cavity in molluscs and arthropods, remnant of the blastocoel. It forms part of open circulatory system found in these animal

Simple indigestion, S i m p l e indigestion The disease is common ...

S i m p l e indigestion The disease is common in stall-fed individuals. Consumption of indigestible food material, moldy and nutritionally unbalanced feed results in simpl

Molybdenum (mo), Molybdenum (Mo) Mo is absorbed as molybdate (MOO 2- ...

Molybdenum (Mo) Mo is absorbed as molybdate (MOO 2- 4 ) ion by plants. Its uptake can be competitively reduced by SO 2- 4 . The requirement of plants for Mo is very low. Mo

Uses of microbes in industry-antibiotics, Normal 0 false fals...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Why fish and sea foods are important for human body, Why Fish and Sea Foods...

Why Fish and Sea Foods are important for human Body? They are rich sources of proteins (20-25%) of a high biological value. Dry fishes contain more (60%) proteins since most of

What is polymerase chain reaction, Which of the following is a false statem...

Which of the following is a false statement regarding Polymerase Chain Reaction (PCR)? A. PCR is a modified version of cellular replication that is used to amplify small amount

Homologous recombination, Homologous Recombination is the exchange of the ...

Homologous Recombination is the exchange of the sequence between two associated but different DNA (or RNA) molecules, with the result that a new "chimeric" molecule is obtained. S

Why his muscles so sore and feeling weak, Yesterday, when Eric returned hom...

Yesterday, when Eric returned home from jogging, he was breathing heavily, sweating profusely, and complained that his legs ached and felt weak. He took a drink of Gatorade and too

What is the basic morphology of a protozoan cell, What is the basic morphol...

What is the basic morphology of a protozoan cell? Protozoans are eukaryotic cells so they have organelles and structures common to this part of cell: endoplasmic reticula, Gol

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd