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

What happens when the ovum is fertilized, What happens when the ovum is fer...

What happens when the ovum is fertilized? If the ovum is fertilized, there is no breakdown of endometrium and no menstrual flow. The fertilized ovum travels through uterine tub

Lentic ecosystems, Lentic Ecosystems Lakes are inland, depressions co...

Lentic Ecosystems Lakes are inland, depressions containing standing water. They vary considerably in area and depth. The largest lake in the world, the lake Superior in North

Oxygenator- equipment of cardio pulmonary bypass , Oxygenator :   They serv...

Oxygenator :   They serve the function of lungs during extra corporeal circulation (ECC) - Oxygenation, removal of carbon dioxide and transport of gaseous anaesthetic agents:*The o

Spermatogonia, Spermatogonia Spermatogonia are the youngest germ cells...

Spermatogonia Spermatogonia are the youngest germ cells from which spermatozoa proliferate. These lie next to the basement membrane and undergo series of mitotic divisions lea

Explain about the blanching - food processing, Explain about the Blanching ...

Explain about the Blanching - Food Processing? Blanching is used for variety of purposes. It is defined as a mild heat treatment applied to tissue (usually plant) prior to free

Explain the electron microscopy in taxonomy, Explain the Electron Microscop...

Explain the Electron Microscopy In Taxonomy? Morphological features that are easily observable with the naked eyes or with the stereomicroscopes permit quick identification an

How pathologic conditions causing the underweight, How Pathologic Condition...

How Pathologic Conditions causing the underweight? Illness can affect weight status in a number of ways. For example, fevers and infections increase the demand for energy, whic

Structure of blastula, Structure of Blastula The structure of blastula...

Structure of Blastula The structure of blastula turns into modified in several animal groups. The changes are related to the amount of yolk deposited in the egg, as you will s

Phylum prototozoa subphylums, 1.sarcomastigophora 2.sporozoa 3.cnidospora 4...

1.sarcomastigophora 2.sporozoa 3.cnidospora 4.ciliophora

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