Characteristic of callus, Biology

Assignment Help:

Characteristic of Callus

The most important characteristic of callus from a functional view point is that abnormal growth has the potential to develop normal roots, shoots and embryoid that can form plants. Callus cultures become brown and necrotic if allowed to grow on the same medium for an extended period because of the depletion of essential nutrients, gradual desiccation of the agar due to water loss and accumulation of toxic metabolites in the medium the tissue may eventually die. The callus is cut into two or more pieces and transferred to a fresh medium. Such cultures are referred to as "sub-cultures". After a few subcultures some tissue systems do not require exogenous auxin for callus proliferation. Such cultures are said to have become 'habituated to auxin". However, this phenomenon is not a genetic change but a selective gene expression as habituated cultures are known to revert to auxin requirement with time.


Related Discussions:- Characteristic of callus

Prognosis, The course and ultimate prognosis of ARF is usually directly rel...

The course and ultimate prognosis of ARF is usually directly related to the severity of carditis. The course and prognosis also depends upon recurrence of rheumatic fever. In pre-p

Where in the plants is a large amount of iaa found, Where in the plants is ...

Where in the plants is a large amount of IAA found? The Auxins are produced and found in large amount in the apical buds of the shoots and stem and in the young leaves.

What are the two main subdivisions of the phylum Chordata, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 What are the two mai

Common equine diseases, COMMON EQUINE DISEASES - 1 .       INFLUENZA ...

COMMON EQUINE DISEASES - 1 .       INFLUENZA OR PINK EYE - Pink eyes. Swallon eye lids. 2.       STRANGLES - Fever, dullness, depression, nasal discharge, lumpy a

Biological species concept, The biologicaI species concept claims that spec...

The biologicaI species concept claims that species consist of natural populations and that species are real and objective. They are not man-made subjective abstraction. According

Explain alterations occurring in fruits and vegetables, Alterations occurri...

Alterations occurring in fruits and vegetables You may already be aware that fruits and vegetables vary greatly in their chemical composition. Though, some generalizations are

Photosynthesis, photosynthesis moderates global warming, briefly explain th...

photosynthesis moderates global warming, briefly explain this statement

Reroduction, describe and compare reproduction in all the kingdoms except k...

describe and compare reproduction in all the kingdoms except kingdom animalia

Explain bioluminescence - ethological approach in taxonomy, Explain Biolumi...

Explain Bioluminescence - Ethological Approach in Taxonomy In those animals which exhibit bioluminescence. The pattern produced by the bioluminescence is used in taxonomy. It h

Eucaryotic cell organelles, Eucaryotic Cell Organelles A eucaryotic cel...

Eucaryotic Cell Organelles A eucaryotic cell has excessive foldings of intrace!:u:;ir cembrane as compared to procaryotic cell. The eucaryotic cell has a number of'organelles s

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