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The role of the cotyledon on the flowering behaviour of Pisum Sativum : a physiological study.

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Amos, J J (1974) The role of the cotyledon on the flowering behaviour of Pisum Sativum : a physiological study. PhD thesis, University of Tasmania.

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Abstract

This thesis doesn't have an abstract. Included here is the first 2 paragraphs of chapter 1 (genetics and physiology).

Genetics
The present knowledge concerning the genetic control of flowering
in peas has recently been reviewed by Murfet (1971a). Rowlands (1964), who
used as his criterion FT (the number of days between sowing of the seed
and opening of the first flower) and Barber (1959), who recorded the
flowering response in terms of NF (the node at which the first flower
is initiated), both concluded that flowering was fundamentally under
the control of one major gene,.dominant for late flowering. Barber
used the symbol Sn, first proposed by Tedin and Tedin (1923), to
designate this gene. The effect of Sn is increased under S.D. (short
day) conditions, and subject to modification by a system of polygenes.
Barber also suggested a second polygene system working outside the
orbit of the Sn gene. More recently, Wellensiek (1969) has suggested
the presence of a multiple allelic gene system controlling flowering
behaviour in peas, with alleles for late, intermediate and early
flowering such that each later gene is incompletely dominant over
the earlier one.

Physiology
TECHNIQUES AND ENVIRONMENTAL VARIABLES
With regard to the physiological approach towards flowering in
peas, the two most common variables used have been photoperiod and
vernalization. In addition, the two techniques of cotyledon removal
and grafting have been commonly employed. These environmental
variables and techniques are explained in greater, detail in the
following chapter. 1.3

Item Type: Thesis (PhD)
Keywords: Peas
Copyright Holders: The Author
Copyright Information:

Copyright 1974 the Author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
would be pleased to hear from the copyright owner(s).

Additional Information:

Thesis (Ph.D.) University of Tasmania, 1974/75. Includes bibliography

Date Deposited: 25 Nov 2014 00:38
Last Modified: 23 Aug 2017 06:06
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