Studies on the root cap and its significance in graviperception

Shachar, Bruria

(1967)

Shachar, Bruria (1967) Studies on the root cap and its significance in graviperception.

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Abstract

The role of the root cap in graviperception was studied in root tips of Maize seedlings.

It was shown that destarching and removal of the root cap causes the lose of geotropic reaction in the roots. The normal growth of the roots is not affected by this decapping and the roots regenerate their root caps during 36 hours. Geotropic reactivity reappears before the completion of regeneration and a study of recovery time was made. A relationship between the length of the roots at decapping time and the length of recovery period was found.

Presentation time studies of normal roots and roots which were decapped after stimulation indicate that the root cap can be removed after stimulation without influencing the subsequent response.

It was also shown that the stimulus must be transmitted within the presentation time and that the plasmatic connections between the cap and the root are necessary for this transmission.

The structural state of the root cap at recovery time was investigated with the Electron Microscope and the presence of starch grains shown. The results of this work are discussed in the light of the current theories on graviperception.

Information about this Version

This is a Accepted version
This version's date is: 1967
This item is not peer reviewed

Link to this Version

https://repository.royalholloway.ac.uk/items/bab0d7fd-998e-4403-a3f3-a46fd98bb3d4/1/

Item TypeThesis (Doctoral)
TitleStudies on the root cap and its significance in graviperception
AuthorsShachar, Bruria
Uncontrolled KeywordsBotany; Biological Sciences; Cap; Graviperception; Root; Root Cap; Root Cap; Significance; Studies
Departments

Identifiers

ISBN978-1-339-62621-5

Deposited by () on 01-Feb-2017 in Royal Holloway Research Online.Last modified on 01-Feb-2017

Notes

Digitised in partnership with ProQuest, 2015-2016. Institution: University of London, Bedford College (United Kingdom).


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