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

Explain about coping mechanism, Q. Explain about Coping mechanism? Copi...

Q. Explain about Coping mechanism? Coping mechanism is defined as the skill used to reduce stress. In other words, these are consciously used skills. Overuse of coping mecha

Explain the absorption of itraconazole capsules, Explain The absorption of ...

Explain The absorption of itraconazole capsules It is decreased with concurrent use of drugs that reduce gastric acidity, such as antacids, H2-receptor blockers, proton pump in

What is the probability of a carrier of the recessive allele, Two parents w...

Two parents who are each known to be carriers of an autosomal recessive alleles have four children. None of the children has the recessive condition. What is the probability that o

What is hipot test ?, Hipot is an abbreviation for high potential. Usually,...

Hipot is an abbreviation for high potential. Usually, Hipot is a term given to a class of electrical safety testing instruments used to confirm electrical insulation in finished ap

Explain the composition of sabouraud agar - culture media, Explain the Comp...

Explain the Composition of Sabouraud Agar? Sabouraud agar is used for cultivation of yeasts and moulds. Peptone - 10.0 gm Dextrose - 40.0 gm Agar - 15.0 gm Distille

Pesticides - danger to wildlife, Pesticides - Danger to Wildlife Anoth...

Pesticides - Danger to Wildlife Another recently realised danger to wildlife in many parts of the world has come from the development of more effective pesticides. As agricult

Sporozoans – protozoan, Sporozoans – Protozoan Sporozoans of the genus...

Sporozoans – Protozoan Sporozoans of the genus Plasmodium are responsible for causing a serious human disease, malaria. They are among, the best known parasites which live in

Define the statement -eyes absent protein, Which of the following is a true...

Which of the following is a true statement regarding the Eyes Absent Protein? A. EYA is a transcriptional activator that having both a DNA binding domain and a transactivation

Define mobilization of bone calcium and phosphorous, Define Mobilization of...

Define Mobilization of bone calcium and phosphorous? It is now firmly established that vitamin D 3 is metabloized first in the liver to 25-hydroxyvitamin D (25 OH- D) (calcicl

Polyphyletic theory, Please I need short notes on polyphylrtic theory

Please I need short notes on polyphylrtic theory

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