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Fruit and seed development in mung beans (Phaseolus aureus Roxb.)

Published online by Cambridge University Press:  27 March 2009

K. S. Savithri ,
P. S. Ganapathy  and
S. K. Sinha
K. S. Savithri
Affiliation:
Department of Botany, University of Delhi, Delhi 110007, India
P. S. Ganapathy
Affiliation:
Department of Botany, University of Delhi, Delhi 110007, India
S. K. Sinha
Affiliation:
Water Technology Centre, Indian Agricultural Research Institute, New Delhi 110012, India
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Summary

A study of fruit set at different nodes was made in mung beans, Phaseolus aureus Roxb., under field conditions. Flowering commenced on the fourth node from the base and the percentage fruit set showed a gradual decrease from the fifth node upwards. Yield analysis was carried out for each of the fruiting nodes. When the leaf and inflorescences at a node are taken as a functional unit it is seen that there was a decrease in the ratio of leaf area to fruit and seed weights from the base of the plant upwards indicating that at the upper nodes particularly, some other plant parts also contribute to the photosynthate pool of the developing seeds.

A quantitative study of the dry matter, proteins and starch in the fruit wall and seeds of fruits at different stages of development was made. It showed that the rapid increase in dry matter, proteins and starch in the seeds at the later stages of development is compensated, in part, by a decrease of these components in the fruit wall. Histochemical studies of the fruit wall further supported these observations. This indicated the contribution of substrates by the fruit wall to the developing seeds.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 90 , Issue 3 , June 1978 , pp. 551 - 556
Copyright
Copyright © Cambridge University Press 1978

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