Effect of Sowing Depth on Nodulation, Nitrogen Fixation, Root and Hypocotyl Growth, and Yield in Groundnut (Arachis hypogaea)

Hypocotyl length in groundnut is a function of sowing depth. In field experiments deep sowing increased the mass of hypocotyl but decreased that of roots, pods and haulm. Few nodules were formed on the hypocotyls of plants from shallow sown seeds (4–5 cm deep). More hypocotyl nodules occurred on Vir...

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Published in:Experimental agriculture 1987-07, Vol.23 (3), p.283-291
Main Authors: Nambiar, P. T. C., Rao, B. Srinivasa
Format: Article
Language:English
Subjects:
Adaptation to environment and cultivation conditions
Agronomy. Soil science and plant productions
Arachis hypogaea
Biological and medical sciences
crop yield
Fundamental and applied biological sciences. Psychology
Genetics and breeding of economic plants
growth
hypocotyls
nitrogen fixation
nitrogenase
nodulation
root nodules
roots
sowing depth
Varietal selection. Specialized plant breeding, plant breeding aims
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cites cdi_FETCH-LOGICAL-c451t-49c4b20bfe9e07f269d0a18759486a2e6b342fe1164151802d7c5fe8d21102fb3
container_end_page 291
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container_title Experimental agriculture
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creator Nambiar, P. T. C.
Rao, B. Srinivasa
description Hypocotyl length in groundnut is a function of sowing depth. In field experiments deep sowing increased the mass of hypocotyl but decreased that of roots, pods and haulm. Few nodules were formed on the hypocotyls of plants from shallow sown seeds (4–5 cm deep). More hypocotyl nodules occurred on Virginia types when deep sown but the number and activity of nodules on the roots decreased. Nodules on the hypocotyl appeared later and fixed less nitrogen than root nodules. Although hypocotyl nodules fixed nitrogen during the later stages of plant growth, this activity could not compensate for the loss in nitrogenase activity due to deeper sowing. Deeper sowing also resulted in decreased pod yields.
doi_str_mv 10.1017/S0014479700017166
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identifier ISSN: 0014-4797
ispartof Experimental agriculture, 1987-07, Vol.23 (3), p.283-291
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1469-4441
language eng
recordid cdi_proquest_journals_1300480949
source Cambridge University Press:JISC Collections:Full Collection Digital Archives (STM and HSS) (218 titles)
subjects Adaptation to environment and cultivation conditions
Agronomy. Soil science and plant productions
Arachis hypogaea
Biological and medical sciences
crop yield
Fundamental and applied biological sciences. Psychology
Genetics and breeding of economic plants
growth
hypocotyls
nitrogen fixation
nitrogenase
nodulation
root nodules
roots
sowing depth
Varietal selection. Specialized plant breeding, plant breeding aims
title Effect of Sowing Depth on Nodulation, Nitrogen Fixation, Root and Hypocotyl Growth, and Yield in Groundnut (Arachis hypogaea)
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