A re-evaluation of plastochron index determination in peas – a case for using leaflet length

Ade-Ademilua, O.E. and Botha, C.E.J. (2005) A re-evaluation of plastochron index determination in peas – a case for using leaflet length. South African Journal of Botany, 71 (1). pp. 76-80. ISSN 0254-6299




The plastochron index (PI) is a measure of plant growth reports our findings on PI using the average length of and can be used to determine growth rate, based upon the first pair of leaflets on each node. Early leaflet appearance of successive leaves on the axis of the growth in peas occurs exponentially and the early plant. PI should under ideal growth conditions be a stages of growth of successive pairs of leaflets occur at regular event and should be predictable with a relatively the same relative growth rate. Given that growth of small error of a few hours. PI has been variously leaflets during early development can be measured calculated in peas, and each method reported has had successfully, we propose the use of leaflet growth as a with it a number of problems that do not allow for measure of the plastochron index in peas. Our results reasonable prediction of PI. Internode length varies suggest that plant age is best expressed using the greatly and is dependent upon the variety, which may be plastochron index, which is a measure of the time short- or long-stemmed; thus this parameter is not ideal interval between the initiations of successive events — for determining growth rate or plant age. This paper in the case of peas, of successive pairs of leaflets.

Item Type:Article
Uncontrolled Keywords:plastochron index; plant growth; growth rate; leaflet growth; Pisum sativum; pea;
Subjects:Y Unknown > Subjects to be assigned
Divisions:Faculty > Faculty of Science > Botany
ID Code:320
Deposited By: Ms Vivien Botha
Deposited On:31 Aug 2006
Last Modified:06 Jan 2012 16:17
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