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

Diminished oxygen-carrying capacity of hemoglobin, Manifestations of anemia...

Manifestations of anemia that are directly due to the diminished oxygen-carrying capacity of hemoglobin include: Answer A. pale skin. B. bleeding. C. bone pain. D. fatigue.

Cardiac care on admission for operation, Cardiac Care on Admission (First t...

Cardiac Care on Admission (First two hours) ECG is monitored by more than one lead (three to five). Left atrial pressure, arterial BP, central venous pressure, respiration

Structures shared by every chordate, Q What are the three structures shared...

Q What are the three structures shared by every chordate that characterize the group? All beings of the phylum Chordata have branchial clefts in the pharynx in some species pre

Intracellular sodium concentration of the motor neuron, Intracellular sodiu...

Intracellular sodium concentration of the motor neuron A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM.  The neuron is healthy.

Acrylamide gel, Acrylamide gel  is a polymer gel used for electrophoresis o...

Acrylamide gel  is a polymer gel used for electrophoresis of DNA or protein to measure their sizes (in the daltons for proteins, or in base pairs for DNA). See "Gel electrophoresis

Sex-influenced traits, what are the examples of sex-influenced traits in hu...

what are the examples of sex-influenced traits in human?

#virus, how do retroviruses reproduce?

how do retroviruses reproduce?

Invertebrates, describe the phylums of invertebrates?

describe the phylums of invertebrates?

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